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1、虚拟语气规则若干条(1) if条件句的虚拟If 从句 主句现现在 did / were were doingwould do(should / could / might) 将来did / werewere to doshould dowould do(should / could / might)过过去 had done would have done(should / could / might)(2) 错综时间条件句If you had followed the doctors advice, you would be all right now.If you had followed
2、the doctors advice, you would have been all right (then).注意: I had planned to go to the cinema, but I had an unexpected visitor.was busy then.(3) If 从句中包含 had, should, would, were可以倒装, 省略if,主句不变.Had you (not) studied hard, Were your brother (not) here, Should it (not) rain, (4) Wish 引导的虚拟语气did / wer
3、e (现在) S wish S had done (过去)could(would) have donewould / could do (将来) were to do 注意: hope一般不跟虚拟语气(5) as if / as though 表示非真实情况时的用法 did / were (现在) as if / as though + S + had done (过去)would / might do (将来)注意: as if / as though 有虚拟和非虚拟两种情况.(6)suggest advise order demand command that + S + (should)
4、 do require not do request Insist proposeIts suggested that S (should) do主 My suggestion is that S (should) do表 The suggestion that she go there is right. 同.注意: suggestion等词后的定语从句不虚拟. The suggestion that he gave me is right.注意: sb. suggest that S (should) do 虚拟建议sth. suggest that 不虚拟暗示、表明 His noddin
5、g suggested that he agreed with me.she (should) do it at once. I insisted that 坚决要求 (虚拟)she was wrong.坚持说 (不虚拟)(7) Its necessary that S (should) doimportantimpossiblestrangenaturalessentialI feel it necessary that S (should) do(8) time Its about time S did / should dohigh time 注意: Its time (for sb.)
6、 to do Its the first time that sb. have done(9)A would rather do (自己) did (现、将) A would rather (that) B(别人) had done (过)Id rather get up early. Id rather you werent here now. Id rather you hadnt come yesterday.(10)But for + n.如果没有 , S would have doneBut that (虚拟)要不是(不虚拟)But for your help,Without 不虚
7、But that you helped me, I wouldnt have succeeded. 虚 If you hadnt helped me, 虚 If it hadnt been for your help, 虚 Had it not been for your help, (11) 要是该多好did If only S + had donecould do(might / should / would)If only I knew your address. If only I had finished my homework.(12) 以防;万一in case (that) le
8、st S (should) do for fear that AmEThey got up early lest they should miss the train. I carry an umbrella with me in case it should rain (=it rains).(13) Otherwise, or + 虚拟would do现在/将来 （待定）(should / could / might) would have done过去(should / could / might) (14) 虚拟语气表婉转 may as well do 还是好 You may as w
9、ell do your homework.虚拟语气表吃惊sorry should do (现,将) S be surprised that S 居然disappointed should have done (过)注意：表祝愿，行为动词用wish ；情态动词用may Wish you success / successful.May you succeed. Fill in the blanks.a. If they _ (be) here,they _(take) youradvice.b. If the world-war _ (burst) out again,what _ (happe
10、n) to our people on earth?c. If the policeman _ (be not) in that room,it _ (be) very dangerous.d. If I _ (be) in your position,I _(ask)for teachers help.werewould takeburstwould happenwere notcould bewerewould aska. If Tom (be) more careful inthe exam, he _ (pass) it already.b. If you (get) up earli
11、er,you _ (catch) the first train.c. If I (meet) you yesterday,we _ (go) to the concert together. had beenwould have passedhad gotwould have caughthad metwould have gonea. If there (be) no natural resource any more,we (make) use of nuclear power .b. What _ (happen) if you _ (get up) too late tomorrow?c. If Robots (control) the world some day,there (be) no friendship .should beshould makewould happenshould get upwere to controlwould be
