《广州英语-七年级下-重点语法》由会员分享，可在线阅读，更多相关《广州英语-七年级下-重点语法（28页珍藏版）》请在金锄头文库上搜索。
1、广州英语牛津版-七年级下-重点语法1. 反意疑问句1当陈述部分的主语是I，而句子又用来征询对方的意见时，附加疑问句中的主语用you。如: I find English very interesting, dont you?I dont like that film, do you?2、当陈述部分的主语是everybody, everyone, someone, nobody, no one, somebody等合成代词时，附加疑问句中的主语通常用they。但亦可用he，尤其是nobody, no one等作主语，具有否定概念时。如：Somebody phoned while I was out
2、, didnt they?Everyone enjoyed the party, didnt they? / Nobody wants to go there, does he?3、当陈述部分的主语是不定代词everything, nothing, anything, something时，附加 疑问句中的主语一般用it，不用they。如：Everything seems all right now, doesnt it? / Nothing is kept in good order, is it?Something must be done to stop pollution, isnt
3、it?4、当陈述部分的主语是指示代词this, that或these, those时，附加疑问句中的主语分别用it和they。如：This is important, isnt it? / These are your friends Tom and Jack, arent they?5、当陈述句为there be结构时，附加疑问句中的主语也用there。如：Theres no help for it, is there? / Theres something wrong, isnt there?6、陈述部分带有seldom, hardly, never, rarely, few, littl
4、e, nowhere, nothing等否定词或半否定词时，附加疑问部分的动词用肯定形式。如：Bob rarely got drunk, did he? / Few people know him, do they?如果陈述部分的否定词带有否定前缀，那么，该陈述部分作肯定处理，附加疑问部分一般仍用否定形式。如：He was unsuccessful, wasnt he? / Tom dislikes the book, doesnt he?7、在由“祈使句+附加疑问”构成的附加疑问句中，附加疑问部分一般用will you, wont you, would you,有时也可用can you, c
5、ant you, why dont you, could you等。如：Dont open the door, will you? / Give me some cigarettes, can you?但是，以lets开头的祈使句，附加疑问部分用shall we;以let us开头的祈使句，如果含义是allow us，不包括听话人在内，疑问部分用will you。如：Lets have a basketball match this afternoon, shall we?Let us go out for a rest, will you?8、当陈述部分带有情态动词must表示“必须”时，疑
6、问部分用mustnt.如：You must work hard next term, mustnt you? / I must answer the letter, mustnt I?但若表推测这层含义时，不能用must，而要根据陈述部分的不定式结构（即must之后的动词）以及含义采用相应的动词形式。如：You must have made a mistake, havent you? / He must be in the library, isnt he?They must have seen the film last week, didnt they?9、当陈述部分含有情态动词used
7、 to时，疑问部分可用 usednt或didnt。如：The old man used to smoke, didnt he?或usednt he?10、当陈述部分含有had better时，疑问部分用had。如：Youd better finish your homework now, hadnt you?巩固练习：1. I dont think that the necklace is made of diamond, _?A. do I B. do you C. isnt it D. is it2. His wife had the carpets and the curtains cl
8、eaned, _?A. hadnt B. had C. didnt she D. did she3.Its my sons wedding next week, and I have to do my best for that,_?A. havent I B. dont I C. dont he D. isnt it4.Harry wouldnt become a teacher if it hadnt been for the holiday, _?A. would he B. had it C. would it D. had he5. No one left here yesterda
9、y,_?A. didnt they B. did they C. didnt one D. did one6. Birds rarely build nests in our garden,_?A. dont they B. do they C. didnt they D. did they7. You must have been to the Great Wall,_?A. mustnt you B. havent you C. arent you D. must you9.They must have stayed at home last night,_?A. mustnt they
10、B. havent they C. didnt they D. must they10.I feel like going to the cinema tonight,_?A. dont I B. dont you C. do I D. do you11.Lets start out early tomorrow morning,_?A. shall we B. will you C. do you D. cant you12.Theres not much news in todays newspaper,_?A. isnt it B. is it C. isnt there D. is t
11、here13.They need our help badly at the moment,_?A. neednt they B. need they C. dont they D. do they14.She is unfit for the position,_?A. is she B. isnt she C. doesnt she D. does she15.I wish to visit America,_?A. dont I B. can I C. may I D. may you16.Mother used to live in a poor village,_?A. used s
12、he B. usednt she C. didnt he D. did he17.Youd better go at once,_?A. wouldnt you B. had you C. hadnt you D. should you28.I am very interested in Mark Twains novels,_?A. arent I B. am not I C. arent you D. are youKeys:1-5 DCBAB 6-10 BBACD11-15 ADABC 16-20 CABCA3. when, while和as的区别as, while ,when 的用法a
13、s， while和when均可用作从属连词，引导时间状语从句，作“当时候”解。它们所引导的时间状语从句有时意思一样，有时却有差异。意思相同时，这三个词可以互换使用；意思不同时，则不能互换。一、 as的意思是“正当时候（just as，at the same moment that）”“随着(while，when)”,它既可表示一个具体的时间点，也可以表示一段时间。as可表示主句和从句的动作同时发生或同时持续，即“点点重合”“线线重合”；又可表示一个动作发生在另一个动作的持续过程中，即“点线重合”，但不能表示两个动作一前一后发生。如果主句和从句的谓语动词都表示持续性的动作，二者均可用进行时，也可
14、以一个用进行时，一个用一般时或者都用一般时。例如：1. As I got on the bus， he got off.我上车，他下车。（点点重合）2. He was writing as I was reading.我看书时，他在写字。（线线重合）3. The students were talking as the teacher came in.老师进来时，学生们正在讲话。（点线重合）二、while的意思是“在同时（at the same time that )”“在期间(for as long as, during the time that）”。从while的本身词义来看，它只能表示一段时间，不能表示具体的时间点。在时间上可以是“线线重合”或“点线重合”，但不能表示“点点重合”。例如：1. He was watching TV while she was cooking.她做饭时，他在看电视。（线线重合）2. He was waiting for me while I was working.我工作的时候，他正等着我。（线线重合）3. He asked me a question while I was speaking.
