Lý thuyết và bài tập chuyên đề động từ khuyết thiếu Nguyễn Quỳnh Trang

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Lý thuyết và bài tập chuyên đề động từ khuyết thiếu do cô Nguyễn Quỳnh Trang biên soạn cung cấp cho người học các kiến thức cơ bản và bài tập vận dụng về động từ khuyết thiếu. Đây là một tài liệu hữu ích dành cho các bạn đang học môn tiếng Anh dùng làm tài liệu học tập và nghiên cứu.

GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang Lý thuyết tập Chuyên đề: ĐỘNG TỪ KHUYẾT THIẾU Sưu tầm Biên soạn cô Nguyễn Quỳnh Trang A LÝ THUYẾT CHUNG I KHÁI NIỆM - Gồm can, could, may, might, must, ought, had better, will, would, shall, should - + V nguyên thể - Chỉ khả năng, chắn, cho phép, nghĩa vụ… Lưu ý: - Không có TO ở nguyên mẫu và không có TO có động từ theo sau They can speak French and English - Không có S ở ngôi thứ ba số ít thì Hiện tại He can use our phone - Chỉ có nhiều nhất là thì: Thì Hiện tại và thì Quá khứ đơn She can cook meals She could cook meals when she was twelve Trong những trường hợp khác ta sử dụng những động từ tương đương II PHÂN LOẠI Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang CAN CAN là một động từ khuyết thiếu, nó có thì Hiện tại và Quá khứ đơn Những hình thức khác ta dùng động từ tương đương be able to CAN cũng có thể được dùng như một trợ động từ để hình thành một số cách nói riêng  CAN và COULD có nghĩa là “có thể”, diễn tả một khả (ability) Can you swim? She could ride a bicycle when she was five years old  Trong văn nói (colloquial speech), CAN được dùng thay cho MAY để diễn tả một cho phép (permission) và thể phủ định CANNOT được dùng để diễn tả một cấm đoán (prohibition) In London buses you can smoke on the upper deck, but you can’t smoke downstairs  CAN cũng diễn tả một điều có thể xảy đến (possibility) Trong câu hỏi và câu cảm thán CAN có nghĩa là ‘Is it possible ?’ Can it be true? It surely can’t be four o’clock already!  CANNOT được dùng để diễn tả một điều khó có thể xảy (virtual impossibility) He can’t have missed the way I explained the route carefully  Khi dùng với động từ tri giác (verbs of perception) CAN cho một ý nghĩa tương đương với thì tiếp diễn Listen! I think I can hear the sound of the sea (không dùng I am hearing) COULD Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  COULD là thì quá khứ đơn của CAN She could swim when she was five  COULD còn được dùng câu điều kiện If you tried, you could that work  Trong cách nói thân mật, COULD được xem như nhiều tính chất lịch hơn CAN Can you change a 20-dollar note for me, please? Could you tell me the right time, please?  COULD được dùng để diển tả một ngờ vực hay một lời phản kháng nhẹ nhàng His story could be true, but I hardly think it is I could the job today, but I’d rather put it off until tomorrow  COULD – WAS/WERE ABLE TO a) Nếu hành động diễn tả một khả năng, một kiến thức, COULD được dùng thường hơn WAS/WERE ABLE TO He hurt his foot, and he couldn’t play in the match The door was locked, and I couldn’t open it b) Nếu câu nói hàm ý một thành công việc thực hiện hành động (succeeded in doing) thì WAS/WERE ABLE TO được sử dụng chứ không phải COULD I finished my work early and so was able to go to the pub with my friends MAY/ MIGHT  MAY và dạng quá khứ MIGHT diễn tả xin phép, cho phép (permission) May I take this book? – Yes, you may She asked if she might go to the party Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  MAY/MIGHT dùng diễn tả một khả có thể xảy hay không thể xảy It may rain He admitted that the news might be true  Dùng câu cảm thán MAY/MIGHT diễn tả một lời cầu chúc May all your dreams come true!  Trong cách dùng này có thể xem MAY như một loại Bàng Thái cách (Subjunctive)  MAY/MIGHT dùng mệnh đề theo sau các động từ hope (hy vọng) và trust (tin tưởng) I trust (hope) that you may find this plan to your satisfaction He trust (hoped) that we might find the plan to our satisfaction  MAY/MIGHT dùng thay cho một mệnh đề trạng ngữ nhượng bộ (adverb clauses of concession) He may be poor, but he is honest (Though he is poor ) Try as he may, he will not pass the examination (Though he tries hard ) Try as he might, he could not pass the examination (Though he tried hard )  MAY/MIGHT thường được dùng mệnh đề trạng ngữ mục đích (adverb clauses of purpose) Trong trường hợp này người ta cũng thường dùng CAN/COULD để thay cho MAY/MIGHT She was studying so that she might read English books  MIGHT (không dùng MAY) đôi được dùng câu để diễn tả một lời trách mắng có tính hờn dỗi (petulant reproach) Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang You might listen when I am talking to you (Làm ơn ráng mà lắng nghe tôi nói) You might try to be a little more helpful (Làm ơn ráng mà tỏ có ích một chút)  Trong trường hợp cần thiết người ta dùng be allowed to, permit tùy theo ý nghĩa cần diễn tả để thay cho MAY và MIGHT I shall be allowed to go to the party MUST  MUST là một động từ khuyết thiếu và có hình thức hiện tại  MUST có nghĩa là “phải” diễn tả một mệnh lệnh hay một bắt buộc You must drive on the left in London  MUST bao hàm một kết luận đương nhiên, một cách giải thích nhất hợp lý theo ý nghĩ của người nói Are you going home at midnight? You must be mad! You have worked hard all day; you must be tired  MUST NOT (MUSTN’T) diễn tả một lệnh cấm You mustn’t walk on the grass  Khi muốn diễn tả thể phủ định của MUST với ý nghĩa “không cần thiết” người ta sử dụng NEED NOT (NEEDN’T) Must I it now? – No, you needn’t Tomorrow will be soon enough Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  CANNOT (CAN’T) được dùng làm phủ định của MUST MUST diễn tả ý nghĩa kết luận đương nhiên, một cách giải thích nhất hợp lý theo ý nghĩ của người nói như đã đề cập điểm đây If he said that, he must be mistaken If he said that, he can’t be telling the truth  MUST và HAVE TO a) HAVE TO dùng thay cho MUST những hình thức mà MUST không có We shall have to hurry if we are going to catch the twelve o’clock train b) HAVE TO không thể thay thế MUST MUST mang ý nghĩa kết luận đương nhiên, một cách giải thích nhất hợp lý theo ý nghĩ của người nói như đã đề cập điểm đây Người ta phải diễn tả bằng những cách khác He must be mad (I personally thought that he was mad) c) MUST và HAVE TO đều có thể dùng để diễn tả cưỡng bách, bắt buộc (compulsion) Tuy nhiên MUST mang ý nghĩa cưỡng bách đến từ người nói HAVE TO mang ý nghĩa cưỡng bách đến từ hoàn cảnh bên ngoài (external circumstances) You must what I tell you Passengers must cross the line by the bridge (Lệnh của Cục Đường Sắt) Passengers have to cross the line by the bridge (Vì không còn đường nào khác) SHALL/ SHOULD  SHALL có thể là: Một trợ động từ giúp hình thành thì Tương lai (Simple Future) ở ngôi thứ nhất số ít Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang I shall what I like Một động từ khuyết thiếu Khi là động từ khuyết thiếu SHALL diễn tả một lời hứa (promise), một quyết (determination) hay một mối đe dọa (threat) theo ý nghĩ của người nói If you work hard, you shall have a holiday on Saturday (promise) He shall suffer for this; he shall pay you what he owes you (threat) These people want to buy my house, but they shan’t have it (determination)  SHOULD được dùng những trường hợp sau: Làm một động từ khuyết thiếu có nghĩa là “nên” và tương đương với ought to You should what the teacher tells you People who live in glass houses should not throw stones (proverb) Dùng thay cho must không muốn diễn tả một ý nghĩa quá bắt buộc với must Members who want tickets for the dance should apply before September 1st to the Secretary Dùng thay cho thì Hiện tại Bàng thái (present subjunctive) WILL/ WOULD  WILL có thể là: - Một trợ động từ Dùng làm trợ động từ WILL giúp hình thành thì Tương lai (simple future) - Một động từ khuyết thiếu Khi là một động từ khuyết thiếu WILL diễn tả một mong muốn (willingness), một lời hứa (promise) hay một quyết (determination) All right; I will pay you at the rate you ask (willingness) Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang I won’t forget little Margaret’s birthday I will send her a present (promise) - Trong cách diễn tả quyết (determination) SHALL lẫn WILL đều có thể sử dụng nhưng mỗi từ mang một nghĩa riêng Với SHALL, quyết là ở người nói - Với WILL, quyết ở chủ từ (subject) của động từ So sánh hai thí dụ sau: (a) George shall go out without his overcoat (b) George will go out without his overcoat Ở câu (a), người nói nhất định bắt George phải ngoài mà không được mặc áo khoác Ở câu (b) George nhất định ngoài mà không thèm mặc áo khoác  WOULD có thể là: - Một trợ động từ WOULD giúp hình thành một Tương lai quá khứ (future in the past) hay các thì câu điều kiện He said he would send it to me, but he didn’t If she were here, she would help us He would have been very happy if he had known about it - Khi dùng như một động từ khuyết thiếu, WOULD diễn tả một thói quen quá khứ Với nghĩa này, WOULD có thể dùng thay cho used to Every day he would get up at six o’clock and light the fire OUGHT TO – DARE – NEED a/ OUGHT TO  OUGHT TO là một động từ khuyết thiếu có thì Hiện tại (simple present) Nó có nghĩa là “nên”, gần giống với should Trong hầu hết các trường hợp OUGHT TO có Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang thể được thay thế bằng should They ought to (should) pay the money He ought to (should) be ashamed of himself  OUGHT TO cũng dùng để diễn tả một gần đúng, rất có thể đúng (strong probability) If Alice left home at 9:00, she ought to be here any minute now  OUGHT TO có thể dùng tương lai với các từ xác định thời gian tương lai như tomorrow, next Tuesday Our team ought to win the match tomorrow  OUGHT NOT TO HAVE + past participle diễn tả một không tán đồng về một hành động đã làm quá khứ You ought not to have spent all that money on such a thing b/ DARE  DARE có nghĩa là “dám, gan” có thể được xem như một động từ khuyết lẫn động từ thường Khi là một động từ khuyết thiếu, nó có đầy đủ đặc tính của loại động từ này You daren’t climb that tree, dare you? (động từ khuyết thiếu) He doesn’t dare to answer my letter (động từ thường) She didn’t dare to say a word, did she? (động từ thường) Moon.vn - Học để khẳng định mình Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  Thành ngữ I daresay có nghĩa là “có thể, có lẽ” đồng nghĩa với các từ perhaps, it is probable Thành ngữ này thường không dùng với chủ từ nào khác ngoài ngôi thứ nhất He is not here yet, but I daresay he will come later c/ NEED  Có hai động từ NEED: một động từ thường và một động từ khuyết thiếu Khi là động từ khuyết thiếu NEED có hình thức Hiện tại và có đầy đủ đặc tính của một động từ khuyết thiếu Nó có nghĩa là “cần phải”, tương tự như have to Vì thế nó cũng được xem là một loại phủ định của must Need he work so hard? You needn’t go yet, need you?  Có một điều cần nhớ là động từ khuyết thiếu NEED không dùng ở thể xác định Nó được dùng ở thể phủ định và nghi vấn Khi dùng ở thể xác định nó phải được dùng với một từ ngữ phủ định You needn’t see him, but I must I hardly need say how much I enjoyed the holiday USED TO  USED TO là một hình thức động từ đặc biệt Nó có thể được xem như một động từ thường hay một động từ khuyết thiếu việc hình thành thể phủ định và thể nghi vấn You used to live in London, usedn’t you? He usedn’t to smoke as much as he does now Moon.vn - Học để khẳng định mình 10 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang Could, may, might + have + P2 = có lẽ - Diễn đạt một điều gì đó có thể đã xảy hoặc có thể đúng ở quá khứ song người nói không dám VD: He could have forgotten the ticket for the concert last night (Tối qua, anh ấy có lẽ đã để quên vé cho buổi hòa nhạc.) I didn’t hear the telephone ring, I might have been sleeping at that time (Tôi đã không nghe thấy chương điện thoại, lúc đó có lẽ tôi đã ngủ.) John might have gone to the movies yesterday (John có lẽ đã xem phim ngày hôm qua.) - Diễn đạt điều gì đó có thể xảy nhưng đã không xảy VD: Why did you leave him come home alone? He might/could have got lost (Sao anh lại để nó về nhà một mình? Nó có thể đã bị lạc) → thật là nó không bị lạc Should + have + P2 = lẽ phải, lẽ nên - Chỉ một việc lẽ đã phải xảy quá khứ nhưng vì lí nào đó lại không xảy VD: Maria should have called John last night (Lẽ tối qua Maria nên gọi cho John.) → nhưng cô ấy đã không gọi John should have gone to the post office this morning (Sáng John lẽ phải đến bưu điện) → nhưng đã không đến The policeman should have made a report about the burglary (Cảnh sát lẽ nên viết báo cáo về vụ cướp đó.) → nhưng họ đã không làm Chúng ta cũng có thể dùng cụm từ was/were supposed to + V để thay cho should + have + Moon.vn - Học để khẳng định mình 13 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang P2 VD: John was supposed to go to the post office this morning The policeman was supposed to make a report about the burglary Must + have + P2 = đã, - Chỉ một kết luận logic dựa những hiện tượng có đã xảy ở quá khứ VD: The grass is wet It must have rained last night (Cỏ bị ướt Chắc hẳn tối qua đã có mưa) Jane did very well on the exam She must have studied hard (Jane đã làm bài kiểm tra rất tốt Cô ấy hẳn đã học chăm chỉ.) Would + have + Past Participle: (đã rồi) dùng câu điều kiện loại III VD: If I had had enough money, I would have bought that Honda (Nếu tôi có đủ tiền, tôi đã mua chiếc xe Honda ấy.) Can’t + have + Past Participle: dùng để một việc gần chắn không thể xảy VD: Last night, Mary can’t have gone out with John because she had to be at home to her homework (Tối qua, Mary không thể chơi với John được vì cô ấy phải ở nhà làm bài tập.) Moon.vn - Học để khẳng định mình 14 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang B LUYỆN TẬP Bài 1: a/ For each situation write a sentence with should or shouldn’t + the following go away for a few days go to bed so late look for another job Put some pictures on the walls take a photograph use her car so much Liz needs a change  She should go away for a few days Your salary is very low  You Jack always has difficulty getting up Moon.vn - Học để khẳng định mình 15 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  He What a beautiful view!  You Sue drives everywhere She never walks  She Bill’s room isn’t very interesting  b/ Read the situations and write sentences with I think/I don’t think / should Peter and Cathy are planning to get married You think it’s a bad idea  I don’t think they should get married Jane has a bad cold but plans to go out this evening You don’t think this is a good idea You say to her: - _ Peter needs a job He’s just seen an advertisement for a job which you think would be ideal for him, but he’s not sure whether to apply or not You say to him:  I think The government wants to increase taxes, but don’t think this is a good idea  c/ Complete the sentences with should + the verb in brackets Diane should pass the exam She’s been studying very hard (pass)  You missed a great party last night You should have come (come) Moon.vn - Học để khẳng định mình 16 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  We don’t see you enough You and see us more often (come)  I’m in a difficult position What you think I ?(do)  I’m sorry that I didn’t take your advice I wath you said (do)  I’m playing tennis with Jane tomorrow She - she's much better than me (win)  We lost the match but we We were the better team (win)  "Is Mike here yet?" "Not yet, but he here soon." (be)  I posted the letter three days ago, so it by now (arrive)  d/ Read the situations and write sentences with should/shouldn’t Some of the sentences are past and some are present I’m feeling sick I ate too much I shouldn’t have eaten so much  That man on the motorbike isn’t wearing a helmet That’s dangerous He should be wearing a helmet Moon.vn - Học để khẳng định mình 17 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang  When we got to the restaurant, there were no free tables We hadn’t reserved one  We The notice says that the shop is open every day from 8.30 It is o’clock now but the shop isn’t open yet  The speed limit is 30 miles an hour, but Kate is doing 50  She Laura gave me her address, but I didn’t write it down Now I can’t remember it  I I was driving behind another car Suddenly the driver in front stopped without and I drove into the back of his car It wasn’t my fault  The driver in front I walked into a wall.I was looking behind me I wasn’t looking where I was going  Bài 2: a/ Put in must or can't You've been travelling all day You must be tired That restaurant be very good It's always full of people That restaurant be very good It's always empty I'm sure I gave you the key You have it Have you looked in your bag? Moon.vn - Học để khẳng định mình 18 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang You're going on holiday next week You be looking forward to it It rained every day during their holiday so they have had a very nice time Congratulations on passing your exam You be very pleased You got here very quickly You have walked very fast Bill and Sue always travel business class so they be short of money b/ Put in must or can't You've been travelling all day You must be tired That restaurant be very good It's always full of people That restaurant be very good It's always empty I'm sure I gave you the key You have it Have you looked in your bag? You're going on holiday next week You be looking forward to it It rained every day during their holiday so they have had a very nice time Congratulations on passing your exam You be very pleased You got here very quickly You have walked very fast Bill and Sue always travel business class so they be short of money c/ Read the situations and use the words in bracket to write sentences with must have and can't have The phone rang, but I didn't hear it (I/asleep)  I must have been asleep Sue hasn't contacted me.(she/get/my message)  She can't have got my message Moon.vn - Học để khẳng định mình 19 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang The jacket you bought it very good quality (it/very expensive)  I haven't seen the people next door for ages (they/go away)  I can't find my umbrella (I/leave/it in the restaurant last night)  Dave, who is usually very friendly, walked past me without speaking (he/see/me)  There was a man standing outside the café (he/wait/for somebody)  Liz did the opposite of what I asked her to (she/understand/what I said)  When I got back to my car, the door was unlocked (I/forget/to lock it)  10 I was woken up in the night bu the noise next door (the neighbours/have/a party)  Moon.vn - Học để khẳng định mình 20 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang 11 The light was red, but the car didn't stop (the driver/see/the red light)  Bài 3: “Was that Chris in class?” – “It Chris left last week.” A couldn't have been B couldn't C could have been D couldn't have The car plunged into the river The driver out, but the passengers were drowned A is able to get B could get C was able to get D can get When I first went to England, I English, but I it A can read/ can’t speak B can read/ couldn’t speak C could read/ couldn’t speak D could read/ can’t speak “Shall I tell John about it?” – “No, you I’ve told him already.” A needn’t B wouldn’t C mustn’t D shouldn’t You reheat the pie We can eat it cold A needn’t B must C mustn’t D should have He’s not answering the phone; he a shower A must be having Moon.vn - Học để khẳng định mình 21 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang B can’t be having C might have D must have You told Mark You knew it was a secret A should have B shouldn't have C might have D couldn't have The house is completely dark and silent, so there be anyone at home A needn’t B can’t C mustn’t D ought to As my grandfather say, "life is not easy" A need B ought C would D must 10 I them a map They all got lost! A should have given B must have given C would have given D ought to give 11 You to come if you are tired A mustn’t B can’t C don’t have D may not 12 The man was found unconscious at the foot of the cliff He have fallen 200 meters A needn’t B must C should D mustn’t 13 Tomorrow is a holiday We go to work Moon.vn - Học để khẳng định mình 22 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang A have to B mustn’t C aren’t allowed D don’t have to 14 Food is not allowed in class You bring it in A don’t need to B don’t have to C mustn’t D need not 15 You’ve been working non-stop for ten hours You be really tired A should B must C would rather D ought to 16 You it unless you want to A mustn’t B needn’t C should D may not 17 I the parking fine immediately Now I have to go to court! A will have to pay B oughtn’t to have paid C should have paid D might have to pay 18 Tom to clean up his room It's a mess A must B got C has got D have got 19 The fortune teller predicted that inherit a big fortune before the end of this year A will B she will C would D she would Moon.vn - Học để khẳng định mình 23 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang 20 When the fog lifts, we where we are A could see B will be able to see C must have seen D are seeing 21 I post the letter for you on the way to the office? A Shall B Would C Will D Do 22 Before anyone steps on that stage, you make sure that it is secure A would better B had better C would rather D would prefer 23 I to drive my daughter to the airport tomorrow A must B can C will have D needn’t 24 He swim across this river A was able to B must C may D can 25 You’d better working so hard A stop B to stop C stopped D to stopping 26 By 2030, it possible to travel faster than the speed of light A may be B must be C should be D might have been Moon.vn - Học để khẳng định mình 24 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang 27 My parents the tickets so long in advance, as the concert was nearly empty A ought to have booked B needn’t have booked C didn’t need to book D don’t have to 28 Although no one can prevent you from spending your own money, you save it for a rainy day A would better B better C had better D would rather 29 When I’ve passed my driving test, I hire a car from our local garage A will have B would be able to C can be able to D will be able to 30 If you had to, you go without food and drink? A can B could C must D will 31 I want this letter typed, but you it today Tomorrow will A must B needn’t C couldn’t D mustn’t 32 We forget to shut the lift gates A should B must C mustn’t D needn’t 33 “ you like to play a game of tennis?” - “I’d love to.” A Could B Will Moon.vn - Học để khẳng định mình 25 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang C Do D Would 34 The swimmer was very tired, but he the shore before he collapsed A was able to reach B can reach C could reach D has reached 35 "What about your English exam this morning?" - "I it, I knew the course by heart and answered all the questions." A would have passed B ought to have passed C am supposed to pass D could pass 36 “ you hand me that book, please?” – “Sure Here it is.” A Would B Should C Must D May 37 The spy tell anyone about his mission It is top secret A hasn’t got to B mustn’t C doesn’t have to D doesn’t need to 38 If there are people suffering from cancer in your family, you be at risk of getting it A need B had better C may D must 39 I got lost and ask a policeman the way A have to B must have to C had to D would 40 “I left my bike here and now it’s gone.” - “Someone stolen it.” Moon.vn - Học để khẳng định mình 26 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang A must have B should have C couldn’t have D needn’t have Moon.vn - Học để khẳng định mình 27 Hotline: 0432 99 98 98 ... trợ động từ tình thái (động từ khuyết thiếu) Moon.vn - Học để khẳng định mình 11 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang Bản thân các động từ khuyết... ấy phải ở nhà làm bài tập.) Moon.vn - Học để khẳng định mình 14 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang B LUYỆN TẬP Bài 1: a/ For each situation write a sentence... III MODAL PERFECT Moon.vn - Học để khẳng định mình 12 Hotline: 0432 99 98 98 GV: Nguyễn Quỳnh Trang Facebook: lopcoquynhtrang Could, may, might + have + P2 = có lẽ - Diễn đạt một điều gì

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