Ngữ pháp Thể bị động Câu hỏi trực tiếp gián tiếp đầy đủ nhất. Xem thêm tại album: Ngữ pháp PRE IELTS Grammar for IELTS Foundation ĐẦY ĐỦ, CHI TIẾT DỄ HIỂU VÀ CHÍNH XÁC NHẤT.
NGOẠI NGỮ 24H WWW.NGOAINGU24H.VN Passive Voice – Direct & Indirect Questions The passive Tense form All tenses and simple or continuous forms are possible, but some are more common than others: Present simple passive The parts are imported from Japan Present continuous passive The road is being widened Will passive • The project will be completed next year Past simple passive • The drug was developed by a team of scientists Past continuous passive • The letters were found while the stones were being cleaned Present perfect passive • All work has been suspended until further notice Modal must/should • All doors must be kept/should be kept locked Modal can/could • The door can only be opened from the inside Why use the passive? To place important information at the beginning of the sentence: • A new bridge across the river was opened in 2006 To describe a technical process impersonally: • The water is then heated to 80° centigrade • Finally, they are cemented onto the teeth Without an agent, to avoid mentioning the person who performs the action, because this is obvious from the context, or unimportant or very general: • Students are expected to attend all classes Đăng ký học: 0962 60 8801 – 04 6260 3948 Địa chỉ: Số 18 Trần Đại Nghĩa – Q Hai Bà Trưng – Hà nội • A new chief executive has been appointed • Her new book was well reviewed in the weekend papers Note that it may be clearer not to use the passive, and writers of scientific reports often use active rather than passive forms in order to focus on the result The second example below may seem clearer: • Lack of exercise is considered to be a contributory factor in heart disease • Researchers have concluded that lack of exercise is a contributory factor in heart disease Agent “by” and instrument “with”: We can describe the instrument used when something was done using with instead of by: • It was removed with the hand tools that can be seen at the top of the photo • The mountain was covered with snow Verbs that cannot be passive: Only transitive verbs (verbs with an object) can be made passive: • They constructed the building in the 1980s • The building was constructed in the 1980s Some transitive verbs cannot be made passive, e.g become, get, have, fit (be the right size) lack, let, resemble, suit: • That dress really suits you! (You are suited is not possible) • He resembles my brother (My brother is resembled is not possible) Intransitive verbs (verbs with no object) cannot be made passive, e.g sleepy arrive: • She slept late • The train arrived on time, for a change Direct & Indirect Questions Direct Questions Questions begin either with question words, or with an auxiliary verb Note the positions of adverbs: Present simple • How (exactly) does it work? • Do they live here? Present continuous • What is happening? • Are they (really) leaving? Past continuous • What was he trying to do? • Were you living there? Present perfect simple • Have you (ever) been there? • Has it started? TYPE THE DOCUMENT TITLE NGOẠI NGỮ 24H WWW.NGOAINGU24H.VN Present perfect continuous • What have you been doing? • Has he been waiting long? Past perfect simple • What had they discovered? • Had they left? • Past perfect continuous • What had he been doing? • Had you been waiting? Indirect Questions Questions can be introduced by reporting verbs In this case there is no question form, or question mark They are called ‘indirect’ or ‘reported’ questions When introduced by a past tense verb, reported questions follow tense rules for reported speech: • Direct question: ‘What time is it?’ • Indirect question: I wonder what time it is Questions can also be introduced by expressions formed from it + be + adjective or it + be + adjective + infinitive: • Direct question ‘Who is going to take over from Jan?’ • Indirect question It’s not clear who is going to take over from Jan Questions can be introduced by other direct questions (with a question mark): • What size is it? • Do you know what size it is? • • Where are we going? Could you tell me where we are going? Noun Clauses Noun clauses beginning who, what, how; why; etc often follow verbs such as: describe, know, understand, realize, explain, reveal, wonder, show and phrases such as: it is uncertain/doubtful/not clear These are not questions and so are not followed by question forms It is important to describe exactly how this reaction takes place: • Scientists now understand how the birds navigate over long distances • The table shows how many 16 to 18 year-olds remain in education • The diagram explains what happens under these conditions Đăng ký học: 0962 60 8801 – 04 6260 3948 Địa chỉ: Số 18 Trần Đại Nghĩa – Q Hai Bà Trưng – Hà nội In writing it may be clearer to use a direct question: • But how the birds navigate over long distances? Scientists now think they understand this Subject Questions Subject questions not use an auxiliary or inversion: • What kills them? • Who discovered this effect? • What was the result? Object Questions Object questions with what and who generally use an auxiliary and inversion: • What these organisms live on? • These organisms live on carbon dioxide Exercises Rewrite each direct question as an indirect question or a statement, following the prompts given: Is this the right answer? => Do you know whether……………… … What time does the train leave? =>Do you know…………………………… Where is the entrance? =>It’s not clear……………………………… How does this machine work? =>I want to know…………………………… Who is he? =>They didn’t know……………………… When does the final examination take place? =>Do you know…………………………… Is it going to rain? =>I wonder whether……………………… How thunder and lightning occur? =>Can you explain ……………………… Why did you tell me to wait here? =>I’d like to know……………………… 10 What’s the meaning of this word? TYPE THE DOCUMENT TITLE NGOẠI NGỮ 24H WWW.NGOAINGU24H.VN =>Could you tell me…………………… Fill in the gaps with the correct form of the verbs in brackets For a long time people………….(think) the giant panda was a type of raccoon At the beginning of the experiment, the chemicals…….……………… (place) in the beaker In medieval times the earth……………………(believe) to be flat Up until now students……………… .(allow) to wear what they want, but the new headteacher has decided to introduce a uniform Next year the new theatre ……………………(open) by some of Britain’s biggest acting stars It……………… …….(expect) that the President will resign due to the recent revelations This report………….….(claim) that there is corruption throughout the company Several students ……… ………………(know) to have cheated in their exams There are 12 mistakes with active or passive verbs in this conversation Find and correct the mistakes: Teacher: People are said that the increase in travel will lead to a loss of different cultures around the world Do you agree? Student: Well, yes, I suppose that is a possibility I’m sure the way of life of many people around the world has changed by contact with tourists But the change might have been happened anyway, I suppose Teacher: Yes, maybe So, you think we should try to stop the disappearance of native cultures? Student: Oh, yes I think it will be very sad if we lose different cultures They enrich our world, don’t they? But it is also argued that many people from poor countries have given opportunities that they wouldn’t have had if there wasn’t any tourism Their cultures may have changed, but they have been benefited from improvements in education and health as well as their standard of living Teacher: So you think that improvements like this inevitably bring about a loss of culture, as some people have been suggested? Student: I suppose I think that, yes As we are continued to be provided with better and better education and we have more and more contact with the world outside our own countries, we are being become more and more the same! Teacher: Can you give some examples of what you mean? Student: Well, in my country we now have American restaurants and we watch American movies on TV American culture feels to be too dominant by many people in my country And English words have been come into my language too Teacher: Oh, that’s interesting And you think that there will one day be only one language in the world? Student: Well, the way we live has affected in a big way by things like the Internet, email and cheap travel All countries are using English for these things, and so we all know a little bit of English already But I am not sure it will use by all countries instead of their own language That seems unlikely to me Teacher: You’ve made some very interesting points Thank you Answer Rewrite each direct question as an indirect question or a statement, following the prompts given: this is the right answer? Đăng ký học: 0962 60 8801 – 04 6260 3948 Địa chỉ: Số 18 Trần Đại Nghĩa – Q Hai Bà Trưng – Hà nội when the train leaves where the entrance is how this machine works who he was when the final examination takes place it is going to rain how thunder and lightning occur? why you told me to wait here 10 what the meaning of this word is? / what this word means? Fill in the gaps with the correct form of the verbs in brackets thought are (were) placed was believed have been allowed will be opened is expected claims are known There are 12 mistakes with active or passive verbs in this conversation Find and correct the mistakes: are said -> said has changed -> has been changed might have been happened -> might have happened have given -> have been given have been benefited -> have benefited have been suggested -> have suggested are continued -> continue are being become -> are becoming feels -> is felt 10 have been come -> have come 11 has affected -> has been affected 12 will use -> will be used TYPE THE DOCUMENT TITLE