完成式ppt課件

1、完成式完成式虛擬語(yǔ)氣虛擬語(yǔ)氣與過(guò)去現(xiàn)實(shí)相反與過(guò)去現(xiàn)實(shí)相反 If 條件句條件句 主句主句 had done would should could mighthave done含蓄條件句含蓄條件句1 用用without 或或 but for引出引出 Without your help, I would have failed. But for the storm, we should have arrived.2 省去省去 if,把把 were 或或 had 或或 should提早到句首提早到句首的倒裝的倒裝 Were I a student again, I would study harder

2、. Should he come tomorrow, I would tell him about it.3 利用上下文或其它方式利用上下文或其它方式 整個(gè)從句不寫(xiě)出整個(gè)從句不寫(xiě)出 I was busy ; otherwise , I would have joined you. If only he had not left ! That would be fine. ( if you should do it. )情態(tài)動(dòng)詞與完成式情態(tài)動(dòng)詞與完成式cant / couldnt have done 不能夠做過(guò)不能夠做過(guò) must have done 一定已做過(guò)一定已做過(guò)may / might

3、have done 或許做過(guò)或許做過(guò) might have done 本來(lái)能夠，但實(shí)踐上沒(méi)有做本來(lái)能夠，但實(shí)踐上沒(méi)有做should / ought to have done 本來(lái)應(yīng)該做卻沒(méi)做本來(lái)應(yīng)該做卻沒(méi)做could have done 能夠做過(guò)；本來(lái)可以做卻沒(méi)做能夠做過(guò)；本來(lái)可以做卻沒(méi)做neednt have done 本來(lái)沒(méi)必要做卻已做本來(lái)沒(méi)必要做卻已做shouldnt / oughtnt have done 本來(lái)不應(yīng)該做卻已做本來(lái)不應(yīng)該做卻已做would rather have done當(dāng)時(shí)寧愿做了某事表懊悔當(dāng)時(shí)寧愿做了某事表懊悔 My sister met him at the Gra

4、nd Theater yesterday afternoon, so he _ your lecture. couldnt have attended B. neednt have attended C.mustnt have attended D.shouldnt have attended 2.Look at Judys red eyes. She _. A. would be crying B. might cry C. must cry D. must have cried 3.Thank you for your birthday gift. In fact, you _ so mu

5、ch money on it. A.must spend B. need to spend C.could spend D. neednt have spent4.-Did you stay at home last night ? -Yes, but I _ dancing.A.would rather gone B.would goC.would rather have gone D.would goneThe perfect infinitive - to have done- the action of the perfect infinitive is an earlier acti

6、on. It happens before the time of the main verb.I am sorry to have kept you waiting.I am glad to have paid a visit to him last week.不定式的完成式與不定式的完成式與happen, appear, seem, pretend1.He seems to have been a teacher. -It seems that he was a teacher.Cf. He seems to be a teacher. ( It seems that he is a te

7、acher. )2.He pretended to have read the book. -He pretended that he had read the book.3.I happened to have driven that kind of car before. -It happened that I had driven that kind of car before.with the following verbs in the passive voicebelieve, consider, find, know, report, say, suppose, think Yo

8、u are supposed to have finished your homework. She is known to have received two Nobel prizes.meant, hoped, desired, expected, planned, promised, wished, wanted to have done sth.,but I hoped to have seen you off yesterday, but I didnt have time.cf. I had meant to help you, but I was too busy at the

9、moment. I had intended to see you off, but I had a very important meeting to attend. 表示愿望，計(jì)劃一類(lèi)的詞，如：表示愿望，計(jì)劃一類(lèi)的詞，如：hope, expect, mean, intend, want, think, suppose 等，其過(guò)去等，其過(guò)去完成時(shí)表示過(guò)去未曾實(shí)現(xiàn)的愿望或意圖。完成時(shí)表示過(guò)去未曾實(shí)現(xiàn)的愿望或意圖。 Hardly had I got home when the rain poured down. No sooner had I got home than the rain pou

10、red down. 我剛到家大雨就傾盆而下。 This is the first time that I have come here. It was the third time that he had made the same mistake. If you had taken my advice, you would not have failed in the exams. It is hard for me to imagine what I would be doing today if I _ in love at the age of seven, with the Meli

11、nda Cox Library in my hometown.A.wouldnt have fallenB.had not fallenC.should fallD.were to fallPresent Perfect Continuous Tense has / have been doing- used to talk about an ongoing state or action which began in the past and is still continuing or has just finisheddifference betweenthe present perfect - focuses on the fact that an action is completed and the present perf