if引导的虚拟语气条件句ppt课件.pptx

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1、Learning Goals：1. Knowing what the subjunctive mood refers to.2.Knowing the difference forms of the subjunctive forms.3.Master the structure of the subjunctive mood about “if”.4.Practices. 概念：1.表示说话人所说的话不是一个事实，而是一个假设、怀疑、猜测等（常见于条件状语从句或让步状语从句）。2.表示说话人的愿望、建议、要求、命令等（常见于名次性从句）。简单来说：不是事实或不大可能发生的事情，用虚拟语气来表

2、述。注意：要区分if引导的真实条件句和if引导的虚拟条件句表示虚拟的，几乎无法实现的时候，采用虚拟语气。TYPES:特殊：错综时间 / 倒装句省略IF等与过去事实相反与现在事实相反与将来事实可能相反一.与过去事实相反If he had got up earlier, he could have caught the train.If引导的虚拟条件句 主句与过去事实相反的假设If + 主语 + had + 动词的过去分词（即：If+动词过去完成时）主语+would(should /might/could)+have done二.与现在事实相反 If I were you, I would buy

3、 a red skirt. If I had a million dollars, I would donate 30% of it to the charity.If引导的虚拟条件句主句与现在事实相反的假设If + 主语 + 动词过去式（be动词一般用were）即：If + 一般过去时If + 主语 + would(could/should/might) + 动词原形三.与将来事实可能相反If it rained tomorrow, I wouldnt attend the party.If it were to rain tomorrow, I wouldnt attend the par

4、ty.If you should come tomorrow, you would find the new manager working in the office.If虚拟条件句主句与将来事实可能相反的假设1. If + 主语主语 + 动词过去式动词过去式2. If + 主语主语 + were to + 动词动词原形原形 3. If + 主语主语 + should + 动词动词原形原形主语 + would(could/should/might) + 动词原形1. 错综时间条件句定义：主句和从句动作发生的时间不同例1） If they had studied hard, they coul

5、d finish the work in a very short time.如果他们当时刻苦学习，现在就能快速完成这份工作了（从句说明过去，主句说明现在）。2）If I were you, I would have gone to her birthday party yesterday.如果我是你，我就去参加她昨天的生日聚会了（从句说明现在，主句说明过去）。 要根据动作发生的时间选择恰当的动词形式。与过去相反，以前没有刻苦学习与现在事实相反，现在没有快速完成2.省略If的条件从句如果条件句中有were/had（助动词）/should时，可使用倒装句结构省略If，把were/had（助动词）

6、/should放句首。如果条件句是否定句时，not应置于主语后，不能与were/had（助动词）/should等缩略成werent/hadnt/shouldnt.例：Had I seen him then, I would have been very happy. =If I had seen him then, I would have been very happy. Should I have time, I would go with you.=If I should have time, I would go with you.Were I not so busy, I would

7、 go to the concert.=If I werent so busy, I would go to the concert. 1. If you had told me in advance, I _ him at the airport.A. would meetB. would have metC. would had metD. should meet1. If you had told me in advance, I _ him at the airport.A. would meetB. would have metC. would had metD. should me

8、et2.If it _ tomorrow, I would not attend the party.A. rainedB. rainsC. had rainedD. were to rain3. I would have gone to the meeting if I _time.A. had had B. have hadC. had D. would have hadIf it _ tomorrow, I would not attend the party.A. rainedB. rainsC. had rainedD. were to rain3. I would have gon

9、e to the meeting if I _time.A. had had B. have hadC. had D. would have hadIf it _ tomorrow, I would not attend the party.A. rainedB. rainsC. had rainedD. were to rain3. I would have gone to the meeting if I _time.A. had had B. have hadC. had D. would have had4.If me father _ here now, he _ tell me w

10、hat to do.A. were; wouldB. was; illC. had been; wouldD. is; ill5.If he _ my advice, he wouldnt have lost his job.A. followedB. should followC. had followed D. would follow4.If me father _ here now, he _ tell me what to do.A. were; wouldB. was; illC. had been; wouldD. is; ill5.If he _ my advice, he w

11、ouldnt have lost his job.A. followedB. should followC. had followed D. would follow4.If me father _ here now, he _ tell me what to do.A. were; wouldB. was; illC. had been; wouldD. is; ill5.If he _ my advice, he wouldnt have lost his job.A. followedB. should followC. had followed D. would follow6.If

12、I _ in the 22nd century, I _ my vocation in a very different way.A. should live; would spendB. will live; should spendC. are living; should have spentD. will be living; would have spent7. _ it rain tomorrow, we would have to put off the visit to Mountain Tai.A. Were B. Should C. Would D. Will 6.If I

13、 _ in the 22nd century, I _ my vocation in a very different way.A. should live; would spendB. will live; should spendC. are living; should have spentD. will be living; would have spent7. _ it rain tomorrow, we would have to put off the visit to Mountain Tai.A. Were B. Should C. Would D. Will 6.If I _ in the 22nd century, I _ my vocation in a very different way.A. should live; would spendB. will live; should spendC. are living; should have spentD. will be living; would have spent7. _ it rain tomorrow, we would have to put off the visit to Mountain Tai.A. Were B. Should C. Would D. Will