Đang tải... (xem toàn văn)
Đề cương ôn tập học kì 2 môn Tiếng Anh lớp 8 năm 2019-2020 - Trường THCS Thanh Quan là tư liệu học tập hữu ích cho những ai đang trong quá trình ôn luyện, củng cố kiến thức để vượt qua kì thi học kì sắp tới với kết quả như mong đợi. Mời các em cùng tham khảo đề cương.
ĐỀ CƯƠNG ƠN TẬP MƠN TIẾNG ANH 8 HỌC KÌ II A. STRUCTURES : I. TENSES: Tenses Form 1.The Simple present (Hiện tại đơn)) Trạng từ thường gặp S + bareV/Vs/Ves always, ofen, S+do/does not+ bareV usually,frequentyly Do/Does+ S+ bareV ? sometimes=occasiona lly, rarely=seldom, once or tiwce a week, never 2. The Present Continuous (Hiện tại tiếp diễn) 3. The Present Perfect (HTHT) S+ am/is/ are+ Ving S +am/is/are+ not+V ing Am/is/are+ S+ Ving? 4. The Simple Past ( Qk đơn) S + V2/Ved S + did + NOT + bareV Did +S + bare V? 5. The Past Perfect ( QKHT) 6. The P ast Continuous (QKTD) S + had + V3 S + had + NOT + V3 Had +S + V3? S + was/ were + Ving S +was/were+ not+V ing Was/ were + S + Ving? S + have/has + V3/Ved S + have/has +not+ V3/Ved Have/Has +S + V3/V ed? Cách dùng và ví dụ * Chỉ 1 thối quen ở hiện tại ex: He usually (go) goes t o school in the morning * 1 sự thật khơng thay đổi ex: The sun (rise) rises in the East * 1 sự việc đã được lên lịch trình trong tương lai ex: The train to Busan leaves at 11:15 tomorrow at the moment, at the * Cho hành động đang xảy ra ở thời điểm đang nói time,Verb! (look!, It (rain) is raining now listen!, be quiet) Lan (eat) is eating at preent at present = now Listen! She (sing) is singing for + khoảng t.gian * Chỉ hành động xảy ra trong qk t.gian không xác since + Mốc t.gian định never, ever, just = ex: She (visit) has visited Ha Long Bay several recently = lately, so times. far = up to now = up * Chỉ hành động bắt đầu ở qk mà còn tiếp tục to the present= until đến hiện tại now,already, yet,this We (learn) have learnt English for 7 years is the first time , My mother (be) has been sick sinse yesterday several times Lan (just buy) has just bought a new shirt Yessterday, last * Diễn tả hành động xảy ra ở 1 thời gian xác (last week /month/ định trong QK year ), ago, in + She (meet) met him yesterday year(in 2000 ) Mr Pike (stay) stayed here last nigh When, before, after, * Diễn tả hành động đã xảy ra và kết thúc trước by the time 1 hành động ở trong QK Most people had left before the volcano eruption At 5 P.m/ at 5 * Chỉ 1 hành động đang xảy ra ở 1 thời điểm xác o’clock + Thời gian định trong QK trong QK, all day At this time last night, she (study) was studying yesterday lessons at home When, as, while * Chỉ 2 hành động xảy ra song song ở QK My mother (cook) was cooking while my father (watch) was watching TV * Chỉ 1 hành động đang xảy ra thì có 1 hành động khác xảy đến When he ( drive) was driving, he (see) saw a serious accident S + will/ shall + Vinf Tomorrow, next (next Diễn tả hành động xảy ra trong tương laii 7 . The week/ month/ year ), Tomorrow he (visit ) will visit me S + will/shall + not Simple someday, She (stay) will stay at home next Monday Future (TL +Vinf Will/Shall + S +Vinf? đơn) S + will + be +Ving (A specific time in Diễn tả hành động sẽ đang xảy ra tại một thời 8 . The the future) điểm xác định trong tương lai S + will + not + be + Future Tonight at 8.30 p.m. Mai will be watching Ving Continuous Frozen again at home. She loves it! Will + S + be + Ving? (TL tiếp diễn) *Drill :Chia thì đúng cho các câu sau : 1. It started to rain while I (walk) to school 2. She (not /finish) her homework yet 3. Nga and Lan (do) the homework at 8 o’clock last night 4. Oh dear ! They always (go ) to class late 5. When Mr Tuan (arrive ) home ,his children (watch ) a film on TV 6. What you (do) at this time last Sunday ? We ( collect ) waste paper for recycling 7. He (be ) in Viet Nam for two weeks 8. Yesterday Ba (ask ) me to go to the station with him, but I ( not/ want ) to leave the house because I (wait) for a call 9. I (already /see ) that film 10 .Mrs Quyen (do ) shopping while Mr Thanh ( attend ) a business meeting 11. Last night when we came to visit him, he (do) an experiment on the upstairs 12. Mr Ba (not go) out since he has bought a new color television 13. They often go to school by bike, but yesterday they (walk) to school 14. We can't (go) out because it is raining now 15. We (have) a party next Sunday. Would you like (come)? 16. While my sister and I (watch) a movie on TV last night, our uncle in the USA (phone) 17. Please continue your work; We don’t mind (wait) 18. Ha Long Bay in Viet Nam (be) a World Herritage Site. It (visit) by millions of people every year 19. I myself (witness) an accident on the Main Road yesterday. A boy (knock) down by a car. Then he (take) to the nearest hospital 20. Most of the Earth’s surface (cover) by water 21. By the time we (arrive) at the canyon, it (stop) raining 22. This time next year Phuc (learn) a new language II. PASSIVE VOICE ( Câu bị động ) 1/ Simple present tense ( A ) S + V 1 /V –es /s + O + (M ) (P ) S + is /am are + p.p(Ved / V3)+ (M ) + by + O 2/ Simple past tense : (A ) S+ Ved /V2 + O + ( M ) (P ) S +was /were + p.p (Ved / V3) + ( M ) + by + O 3 / Modal verbs : Will / Shall /Could /Must/ Should (A ) S + Modal verb +V1 + O + (M ) (P ) S + Modal verb +be +p.p + ( M ) + by + O 4 / Present perfect tense : ( A ) S + have /has +p.p + O + ( M ) ( P ) S + have / has + been + p.p + (M ) + by + O *Drill : Chuyển những câu sau sang bị động : 1.My father bought this house two years ago 2 .We have done these exercises carefully 3 .People recycle car tires to make pipes 4. The workers will build a new school in my town 5 .Franz Gruber wrote the Christmas carol in the 19th century 6. People can reuse milk bottles for thirty times 7. People speak English in the world 8 .The boy has broken the classroom window 9 .I got his letter this morning 10. They make these cars in Japan III. REPORTED SPEECH (Câu gián tiếp) Cách chuyển đổi từ câu trực tiếp sang câu gián tiếp: 1. Thay đổi về thì Is/am/are was/ were V1/ Ves/s V2/Ved Don’t /doesn’t Didn’t Will Would Can Could Must Had to 2. Thay đổi đại từ : Phụ thuộc vào chủ ngữ của mệnh đề chính I He /she We They He /She /they He /She /They 3. Thay đổi từ chỉ nơi chốn và thời gian This That Here There Now Then Today That day Tomorrow The next day/ the following day Cách chuyển câu hỏi Yes /No sang câu gián tiếp S+ V + O + If /Whether + S + V Said asked /wanted to know *Drill : Chuyển những câu sau sang câu gián tiếp Mai said “We are going to have an English –speaking club “ “I will come here tomorrow “ said Tim She aksed me “Do you know him? “ My friend told me “ I can repair the bike myself “ My friend said “ after Tet every thing is expensive “ “ Is Phong Nha Cave far from HaNoi , Lan ? “ Peter aksed The teacher said to Nam “ You must study harder in English “ “ Do many tourists visit Ha Long Bay every year , Nga ? “ Mary aksed Nam said “ My sister likes cooking “ 10 My mother said “ I want our house to look clean and nice at Tet” IV. CONDITIONAL SENTENCES (Câu điều kiện): Loại Cơng thức Cách sử dụng Điều kiện có thể xảy ra hiện tại tương lai Ví dụ: If the weather is nice, I will go swimming If + S + V(s,es), S + Will/Can/shall…… + V tomorrow If + S + V2/ Ved, S +would/ Could/ Should…+ V Điều kiện khơng có thật ở hiện tại Ví dụ: If I were you, I would follow her advice *Drill : Chia động từ đúng cho các câu sau: 1. If Caroline and Sue (prepare the salad), Phil (decorate) the house 2. If Sue (cut) the onions for the salad, Caroline (peel) the mushrooms 3. Jane (hoover) the sitting room if Aaron and Tim (move) the furniture 4. If Bob (tidy up) the kitchen, Anita (clean) the toilet 5. Elaine (buy) the drinks if somebody (help) her carry the bottles 6. If I (have) a million USD, I (buy) a Ferrari 7. If he (have) more time, he (learn) karate. 8. She (spend) a year in the USA if it (be) easier to get a green card 9. If I (live) on a lonely island, I (run) around naked all day 10. If I (be) you, I (not buy) that car V. Những cấu trúc khác: 1. Present participle and past participle used as Adjectives a. Present participle : Ving (active meaning ) đang b. Past participle : V –ed /V3 (passive meaning ) bị ,được *Drill : kết hợp những cặp câu sau dùng hiện tại phân từ hoặc quá khứ phân từ 1.The man is standing near the window . He is Nam 2 .A car was made in Japan . It was very expensive 3 .The film was shown on TV last night .It won the first prize in the film festival last year 4. A man is working in the garden .He is my grand father 5. A window was broken in the storm last night .It has been repaired 2. The forms of verbs : S + want /aks /tell / get / advice / start /begin /decide /try /allow + To –infinitive ( V1) S +V + (O) + whquestion+ toV1 S +will /shall /can /should /could /ought to /must /might + bareinfinitive (V1) S + used to / have to / be going to + V1 S + be+ Adj + to –infinitive(V1) S+ be+ adj +enough +for+ O + ToV1 Too +adj S + enjoy like/love/dislike/hate /finish /mind /spend + V –ing 3. Compound –Noun : Noun + V –ing (adj ) A /an + N + Ving + N Compound noun Eg :ricecooking , fire – making , car –making *Drill : Viết lại các câu sau sử dụng tính từ kép : It is a farm which raises chickens Viet Nam is a country which exports rice It is a contest in which participants have to cook rice This is a machine which is used to wash clothes It is a festival in which people have their cocks fight against each other 4. Requests ,offers and promises a. Request : Can /Could you + V1……… ? Will /Would you please + V1 …… ? Sure / OK /All right / I’m sorry I can’t /I’m afraid not Would /Do you mind + V –ing…………….? Do you mind if I + V1 ………………………… ? Would you mind if I + V (simple past ) …………? No, I don’t mind /No, of course not /Not at all /Please do I ‘d rather you didn’t /I’d prefer you didn’t b. Offers : Would you like + to – V1… ? Shall I /Can I + V1 ……….? Will you /Won’t you + V1………? Yes, please /That would be nice /No , thank you c. Promises : I promise I will + V1 I won’t + V1 I hope so /Good / I’m glad /Don’t forget B. EXERCISES I. Choose the word whose underlined part is pronounced differently from that of the rest A. bean B. teammate C. speaker D. overhead A. arrived B. sight C. island D. prison A. who B. what C. where D. which A. notice B. socket C. enroll D. mobile A. head B. beach C. weather D. heavy A. why B. try C. dry D. gym A. mind B. window C. find D. tidy A. small B. tall C. plane D. hall A. bread B. meat C. team D. please 10 A. environment B. birthday C. white D. stripe 11 A. copy B. novel C. pop D. come 12 A. wanted B. needed C. attended D. worked 13 A. bank B. station C. lazy D. vacation 14 A. engineer B. exercise C. experiment D. exhibition 15 A. stopped B. watched C. learned D. looked 16 A. repair B. relax C. energetic D. enjoy 17 A. thin B. then C. they D. there 18 A. school B. teacher C. children D. chicken 19 A. compile B. snorkel C. memorize D. compete 20 A. whole B. when C. where D. while II. Choose the word that has main stress placed differently from the others: 1. A. unaffected B. undrinkable C. uncountable D. unsuitable 2. A. unpopular B. unorganized C. unfortunate D. unambitious 3. A. imperfect B. immature C. immobile D. immoral 4. A. translator B. director C. editor D. spectator 5. A. consumer B. performer C. shopkeeper D. believe 6. A. impair B. unhurt C. effect D. insect 7. A. explorer B. accurate C. unhealthy D. mature 8. A. affect B. happen C. pollution D. prefer 9. A. unhelpful B. unlikely C. unforeseen D. unusual 10. A. imprecise B. imperfect C. impartial D. impassive 11. A. unkind B. kindness C. impure D. machine 12. A. imbalance B. unable C. unhealthy D. impolite 13. A. unexplored B. unforeseen C. untidy D. immature 14. A. impossible B. unnatural C. unrelated D. unbearable 15. A. unlimited B. undeveloped C. unsuccessful D. unaffected III. Choose the correct answer to complete each sentence 1. She fell off a bike and…………. her head on the road. . A. hited B. hit C. hitted D. hiting 2. Would you mind if I ………………a photo. A. take B. took C. taking D. to take 3. Mount Rush more can be……………from more than 100 kilometers A. see B. saw C. seen D. been seen 4. My friend is always………………in class. A. talked B. talking C. talks D. told 5. She asked me ………………a driving licence. A. if I have B. whether I have C. if I had D. whether I have had 6. Nylon in the 1930's A. invented B. is invented C. was invented D. has been invented 7. The librarian asked us so much noise A. don't make B. not make C. not making D. not to make 8. It’s dangerous …………….in the river A. swim B.to swim C.swimming D.swam 9. ……….you mind if I smoke ? A.Could B.Don’t C.Do D.Would 10. Milions of Christmas cards …………every year A.were sent B.are sent C.send D.is sending 11. It's difficult your directions A. to follow B. following C. follow D. followed 12. Milk to the houses by the milk man everyday. A. brings B. is bring C. is brought D. has brought 13. In the .contest , one person from each team has to run to the river to get water A. bull fighting B. ice skating C. waterfetching D. weight lifting 14. He asked me I knew the Phong Nha cave A. whether B. if C. Do D. a and b are OK 15. I can see a boy……….a water buffalo A. riding B. to ride C. ride D.rode 16. Nga showed Nhi where tickets A.get B.getting C.to get D.got 17. I Hoa while I was doing the shopping A. met B. meet C. to meet D. meeting nd 18. Mrs. Quyen has been in New York July 2 A. since B. for C. while D. when 19. We have played tennis two hours A. for B. since C. while D. when 20. I was reading …………my sisters were playing with their dolls A. when B. while C. at which D. at time 21. I take part……… most youth activities of my school A. of B. on C. in D. to 22. Car tires………… to make pipes and floor coverings A. are recycling B. are recycled C. recycled D. recycling 23. She asked me if I …………pop music A. like B. to like C. will like D. liked 24. When the mail man came, my family……………… A. is sleeping B. sleep C. was sleeping D. slept 25. The bike………………in Japan is very expensive A. make B. made C. makes D. making 26. She arrived early………….order to get a good seat A.on B.in C.out D.at 27. I promise I…………video games any time A.will play B.play C.won’t play D.to play 28. Hoa…………dinner at seven o’clock last night A.eat B.ate C.was eating D.to eat 29. The bike in Japan is USD 100 A. maked B. make C. making D. made 30. Air , together with littering, is causing many problems in our cities today A. pollute B. pollution C. polluting D. polluted 31. The road in front of my office is always when it rains heavily A. to flood B. flooding C. flood D. flooded 32. Singapore is famous for its and green trees A. cleanliness B. cleanly C. cleaning D. clean 33. In some English speaking countries, turkey and pudding are . food at Christmas A. national B. historical C. traditional D. possible 34. The USA has a population of 304 million, and it’s the third country in the world A. smallest B. largest C. narrowest D. highest 35. The roof of the building in a storm a few days ago A. damaged B. was damaged C. has damaged D. has been damaged 36. A severe tropical is called a typhoon A. drought B. rain C. flood D. storm 37. As soon as the floodwater down, people their houses A. went cleaned B. had gone – cleaned C. went had cleaned D. had gone – had cleaned 38. If I were you, I do something to prevent him from littering A. would B. did C. will D. do 39. Earth by the gravity of the Sun and orbits around it A. holds B. is held C. is holding D. held 40. By the time we to the cinema, the film had started A. gets B. had got C. has got D. got 41. When the policeman came there, the robber A. had left B. has left C. left D. was left 42. All people who were without homes in the flood were provided with accommodation A. short B. temporary C. present D. instant 43. Seven of ten people prefer facetoface when having a date A. language B. contact C. code D. sign 44. When thermal pollution happens, the water temperature in streams, rivers, lakes and oceans A. changes B. keeps C. remains D. stays 45. Australia is home to animals like kangaroos and koalas. A. only B. rare C. unique D. precious 46. If you were the president, what you do to help the environment? A. will B. did C. would D. do 47. The Maori in New Zealand greet each other by their noses A. touching B. punching C. blowing D. rubbing 48. The village’s drinking water with poisonous chemicals since the factory came into operation A. contaminates B. is contaminated C. has contaminated D. has been contaminated 49. When the policeman came to the scene, the driver of the car A. have left B. had left C. leaves D. was left 50. All people who were without homes in the flood were provided with accommodation A. short B. temporary C. present D. instant IV. Reading 1. Complete the passage with the suitable words in the box arrived ambulance order accident awake tight offer stop Yesterday, when I was riding along a busy street, I saw an (1) _. A woman was knocked down when she crossed the street at a zebra crossing. Many people stopped to (2) _ their help. A police man arrived and asked a young man to telephone for an (3) . While waiting for the ambulance, the policeman and some people tried to (4) _ the bleeding. They used a handkerchief to cover the wound, then put pressure on it. and held it (5) . They tried to talk to her in (6) _to keep her (7) _. After about three minutes, the ambulance (8) and the woman was taken to the hospital Read the fairy tale Cinderella and do the tasks below Once upon a time there was a young girl called Cinderella. Cinderella was living happily with her family when her mother died. Her father married an evil widow with two daughters. Cinderella’s stepmother and two stepsisters mistreated her. She had to wear old clothes and work hard while the sisters wore fancy clothes and had fun. A good witch helped Cinderella. She turned Cinderella’s old dress into a beautiful gown. Cinderella went to a party and a handsome prince politely invited her to dance with him. He fell in love with her and wanted to find out who she was. Cinderella left the party in a hurry and didn’t tell the prince her name. but she left a glass slipper, and the prince used that to find her. They got married and lived happily ever after 1. Answer true (T) or false (F) a. Cinderella was living happily with her family when her mother died b. Her father married a kind woman c. Her stepmother and two stepsisters were very kind to her d. The prince got married to the girl who fitted the left glass slipper 2. Answer the questions 1. What did Cinderella’s father do when his wife died? 2. How did Cinderella’s stepmother and two stepsisters treat her? 3. Who turned Cinderella’s old clothes into a beautiful gown? 4. What did the prince use to find Cinderella? 3. Read the following text carefully and choose the correct answer A, B, C or D for each of the gap Ewan McGregor was (29) in Scotland in 1971. He decided to be an (30) when he was only nine and he (31) his first film in 1992. So far in his career he has appeared (32) a lot of different types of films, including comedies, musical, dramas and the Star Wars movies In his career Ewan has worked with (33) like Cameron Diaz and Nicole Kidman, and his films have won (34) of awards. He loves acting and when he finished (35) the musical, Moulin Rouge, he said, “I have never been happier to do anything in my life” 29. A. bear B. born C. bearing D. beared 30. A. acting B. actress C. actor 31. A. made B. played C. worked 32. A. at B. on C. with 33. A. directors B. actors C. actresses 34. A. a lots B. lots C. much 35. A. to film B. filmed C. film 4. Read the text carefully then do the exercises D. action D. starred D. in D. writers D. some D. filming a. Every summer, millions of tourists come to Paris. Paris is famous for its beautiful old buildings, attractive scenery and its excellent food. Most tourists enjoy taking a boat tour along the Seine River or visiting the Louvre, where they can watch many world famous paintings Shoppers in Paris are fond of strolling around large department stores, where they can have many choices of wellcut clothes or sweetsmelling perfumes. Of course, visitors to Paris never miss seeing the Eiffel Tower, especially at night, when the Tower looks bright with colorful lights around it. 1. What is Paris famous for? 2. Where do tourists enjoy taking a boat tour? 3. What can tourists do at the Louvre? 4. Do visitors often miss seeing the Eiffel Tower? 5. How does the Eiffel Tower look at night? b. Dear Mom and Dad, Hello from Toronto! After two months of living here, I feel this place is like my house. Toronto is a big city, but it is very nice. I like to shop downtown in the Eaton center, and I also like to shop in the Queen Street store. I enjoy taking the subway to work. It is a bit crowded in the morning, but I don’t mind using the subway because it is so convenient. The trip from my apartment to work takes only twenty minutes Although I like Toronto, my apartment is not very nice. I hate living in this neighborhood. It is not very pleasant and there are no good restaurants. The worst thing is my neighbor. I can’t stand him. He is always playing the stereo all night long Anyway, I enjoy big city life most of the time. I hope you are both well Love, Mariam 1.How long has Mariam lived in Toronto ? …………………………………………………………………… 2.Does she mind taking the subway to work ? …………………………………………………………………………… 3. How long does it take from her apartment to work ? …………………………………………………………………………… 4. What is his neighborhood like ? …………………………………………………………………………… 5. Is she interested in big city life ? …………………………………………………………………………… IV. Finish the second sentence in such a way that it means exactly the same as the first one 1. They will rebuild the building next year à The building 2. Johnny said to me “ I don’t know what Fred is doing” à Johnny said to me 3. Someone will translate this letter into Vietnamese à This letter 4. The last time we met each other was ten years ago à We haven’t 5. Mai said “It is raining heavily outside.” à Mai said 6. Have you ever played a computer game before? à Is this 7. France presented the Statue of Liberty to the United States in 1876 à The Statue 8. Nien asked Hoa “ Do you have many new friends ?” à Nien asked Hoa 9. People should stop experiments on animals à Experiments 10. “Don’t cry my child” said the mother à The mother asked 11. May I turn on the television? (mind) à Do you 12. Would you mind not using the office phone? (use) à I’d 13. “Where do you live, Minh?” Nhan said à Nhan asked 14. Does your country export coffee to Europe? (exported) à Is 15. To learn English is difficult à It is 16. Scientists have invented new devices to help people live a longer life à New devices 17. I don’t have enough time , so I can’t go on holiday this summer à If 18. The man had a broken leg. He tried to save his wife à In spie of 19. I can’t tell you because I don’t know the answer à If 20. They will do the test well. They will review them all hard à If 21. The rescue workers evacuated the villagers in the raged flood to the safe place last night à The villagers in the raged flood 22. The students will provide aids for the homeless people tomorrow à Aids 23. The people will protect the environment now. The environment will be nice à If 24. They don’t have a map, so they get lost à If 25. The storm destroyed many houses in this village last week à Many houses 26 Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. (because) 27. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so) 28. We won’t hold the festival. It costs too much money. (if) 29. The tortoise was running. The hare was sleeping. (while) 30. The girl worked hard. Her stepmother wasn’t happy. (although) V. Arrange the words to make meaningful sentences 1. Sydney Opera House / completed / 1973 / was / in ……………………………………………………………………………………… 2. Do / mind / if / you / close / I / the / window? 3. delighted / passed / I / that / you / English / am / exams / your / have. …………………………………………………………………………. ………… 4. storm / destroyed / the / are / houses / now / the / by / rebuilt / being. ………………………………………………………………………………………… 5. He/ his / him / birthday / happy/ is / parents / give / a / that / will / present / very …………………………………………………………………………………………… 6. the / held / festival /was / where? ……………………………………………………………………………………… 7. an / important / Christmas / festival / in / many / countries / is ……………………………………………………………………………………… 8. people / took / part / how/ in / each / activity / many ? ……………………………………………………………………………………… 9. Hue / Mr Nam / tonight / arriving / to / is. 10. It / not / difficult / is / this sentence / to / translate / into / English ... 19. I myself (witness) an accident on the Main Road yesterday. A boy (knock) down by a car. Then he (take) to the nearest hospital 20 . Most of the Earth’s surface (cover) by water 21 . By the time we (arrive) at the canyon, it (stop) raining 22 . This time next year Phuc (learn) a new language... D. when 20 . I was reading …………my sisters were playing with their dolls A. when B. while C. at which D. at time 21 . I take part……… most youth activities of my school A. of B. on C. in D. to 22 . Car tires…………... 10 .Mrs Quyen (do ) shopping while Mr? ?Thanh? ? ( attend ) a business meeting 11. Last night when we came to visit him, he (do) an experiment on the upstairs 12. Mr Ba (not go) out since he has bought a new color television