《《重点语法归纳》ppt课件》由会员分享，可在线阅读，更多相关《《重点语法归纳》ppt课件（42页珍藏版）》请在金锄头文库上搜索。
1、重点语法归纳,虚拟语气: 条件式和命令式 非谓语动词: 不定式、动名词和分词 倒装句,虚拟语气,if 引导的虚拟条件句的用法如下： 时间 if条件句的谓语形式 主句的谓语形式 现在 Were 行为动词一般过去时 Would (could, should, might) + 动词原形) 过去 过去完成时 Would (could, should, might) +现在完成式 将来 were to +动词原形 Would (could, should, might) (should) +动词原形,虚拟语气,命令式虚拟语气可归纳如下 1）wish 后宾语从句的虚拟语气 William wishes
2、now that he _ English instead of French when he was in high school. A. have studied C. had studied B. studies D. studied 答案是C。,Were 型虚拟,2）在 if only 感叹句中 If only I _ what you wanted! A. knew C. had known B. know D. have known 答案是C。,Were 型虚拟,3）在as if / as though 从句中 She acts as if she _ the only perso
3、n affected by the ruling. A. is C. would be B. were D. will be 答案是B。,Be 型虚拟,4）在 would rather (sooner) 后的 that 从句中 Id rather you _ those important documents with you. A. dont take C. wont take B. didnt take D. not take 答案是B。,Be 型虚拟,5）在 suggest 等动词及其相应名词之后的 that 从句中 advise, agree, ask, command, decide
4、, demand, desire, insist, maintain, move（提议）, order, propose, recommend, request, require, rule, suggest, urge, etc.,Be 型虚拟,The doctor suggested that your brother _ his right hand. A. avoid to use C. avoid using B. has avoided using D.avoided to use 答案是C。,Be 型虚拟,常见的相应名词有：advice, command, agreement,
5、decision, demand, desire, motion, proposal, recommendation, request, requirement, suggestion, idea, order, plan, policy, wish, etc.,Be 型虚拟,Our demand is that another experiment _. A.shall be made C. must be made B. will be made D. be made 答案 D,Be 型虚拟,6）在It is / was + 形容词后的 that 从句中 这类形容词有：important,
6、 advisable, appropriate, essential, necessary, strange, natural, ridiculous, possible, preferable, proper 等。,Be 型虚拟,Its advisable that the Sport Meets _ owing to the bad weather. A. must be put off B. be put off C. could be put off D. ought to put off,命令式虚拟语气,7）用在以 lest, for fear that 和 in case 所引导的
7、目的状语从句中，这时谓语动词多用should 加动词原形构成。如： Take an umbrella with you in case it should rain. 带上雨伞吧，以防下雨。,特殊的虚拟语气,在 Its (high, about) time 后的 that 从句中,谓语动词一般用过去式 。 “Isnt it about time you _ to do some work?” A. begin C. should began B. have begun D. began 答案是D。,其他情况的虚拟语气,1）公式化的句子中的虚拟语气：用动词原形（不和主语保持人称、时态和数的一致）
8、或“may+动词原形”（经常倒装）构成的谓语来体现。如：,公式化的句子,God bless you! May you enjoy your holiday! Long live peace! Come what may, well go ahead with our plan.,其他情况的虚拟语气,2）错综时间非真实条件中的虚拟语气： If we had set out earlier, we wouldnt be walking in the rain.,其他情况的虚拟语气,3）在带有but for 引出的短语的句子中： We would have been in real trouble
9、but for your help.,其他情况的虚拟语气,4）在带有but that从句的句子中: but that从句中用陈述语气，主句中用虚拟语气。 But that you helped him, he would have failed.(=if you hadnt helped him),其他情况的虚拟语气,5）With或without 引出的短语有时表示和事实相反的情况，此时句子中的动词要用虚拟语气。 We would never have got there without the guide.(=if we hadnt had the guide),其他情况的虚拟语气,6）在o
10、therwise 或 or 引出的分句中，动词根据情况可用陈述语气或虚拟语气。如：,6）在otherwise 或 or 引出的分句中,Hurry up, otherwise/or you will be late. I used a computer, otherwise/or it would have taken me much longer to finish the work. (otherwise /or=if I hadnt used a computer),其他情况的虚拟语气,7）在假设情况由上下文或其他方式表现出来的句子中，如： He would have given you
11、more help, but he has been so busy. He would have done better under more favorable conditions.,重点语法归纳,非谓语动词：不定式，动名词和分词,动词不定式,有些动词只能用不定式作宾语：afford, agree, ask, attempt, beg, begin, choose, claim, decide, demand, desire, expect, fail, fear, forget, hate, help, hesitate, intend, learn, like, love, mana
12、ge, mean, offer, plan, prefer, refuse, remember, start, want, wish 等。,动名词,有些动词只能用动名词作宾语，如：admit, appreciate, avoid, consider, deny, enjoy, finish, keep, mind, postpone, practice, suggest, spend, quit, recall, resist 等。,动名词,常见的后接动名词作宾语的动词短语有：approve of, count on, depend on, give up, insist on, keep o
13、n, succeed in, think about, put off, persist in, rely on, cant help, be used to, better off, feel like, leave off, look forward to, object to, turn to, adapt to, see to, get to, respond to 等。,非谓语动词,有些动词既可以用不定式作宾语，也可用动名词作宾语，但表达的意义不同。如： remember to do remember doing stop to do stop doing forget to do
14、forget doing,重点语法归纳,倒装句 1）否定意义的词位于句首引起的倒装，如： barely, hardly, scarcely, seldom, never, nowhere, little 等。,倒装句,Little did I think a year ago that I could work for your company. Never before has our country been so rapidly developing as it is today.,倒装句,2）否定意义的短语位于句首于引起的倒装 at no time 从不，从来没有 by no mean
15、s 决不，决不是 in no case 决不 in no way 决不,倒装句,in vain 徒劳 no longer 不再，已不 no more 不再，也不 not even then 甚至连也不 not for a moment 从不 not until 直到才 on no account 决不,倒装句,Under no circumstances shall we discontinue the work weve begun. In no way can theory be separated from practice.,倒装句,3） 一些短语性连词引起的倒装 not only b
16、ut (also) 不仅而且 no sooner than hardly (scarcely)when 一就,倒装句,Hardly had he said anything before he left. Scarcely had she fallen asleep when a knock at the door awakened her. No sooner had Anne arrived there than he fell in.,倒装句,4）only + 状语位于句首引起的倒装，如： Only then did the doctor realize that his patient needed money. Only when you adjust down your price to some ext
