新概念3精品课件lesson 22 By heart.ppt

1、Lesson 22 By heart,I. Objectives,1. bl- 2. ceed 3. 虚拟语气,Subjunctive mood 虚拟语气,虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。,1.在条件句中的应用 条件句： 真实条件：不用虚拟，if 是如果的意思。 句型： 条件从句 主句 一般现在时 shall/will + 动词原形 e.g. If he comes, he will bring his cat.,If you leave now, you are never going to regret it.If you leave

2、now, you will never regret it. 在真实条件句中，主句不能用be going to表示将来，该用shall, will. 。,If it is night, the sun doesnt rise. 表示真理时，主句谓语动词便不用shall (will) +动词原形，而直接用一般现在时的动词形式.,非真实条件：用虚拟 时态：可以表示过去，现在和将来的情况。 基本特点: 时态退后,If you had worked hard, you wouldnt have failed in the exam. If I were a bird, I could fly in t

3、he air. If it were to rain tomorrow, the meeting would be put off.,省略if 要主谓倒装 If I were a boy, I would join the army. Were I a boy, I would join the army. If he had taken my advice, he would have succeeded. Had he taken my advice, he would have succeeded.,1._ to do the work, I should do it some othe

4、r day.A. If were I B. I were C. Were I D. Was I 2. The volleyball match will be put off if it _.A.will rain B. rains C. rained D. is rained,3. If it rained, they _ (stay) at home. would stay 4. We would be very much pleased if you _ (come). came 5. What a pity! I havent got my car. If I had, I _ (ta

5、ke) you to the airport. have taken,6. We would answer the questions if we _ (can). could 7 . If I were you, I _ (take) a long walk before going to bed. would take,8. If it _ last night ,it would be very cold today. A. had rained, B. rained C. should rain D. were to rain,混合条件句 主句与从句的动作发生在不同的时间，这时主，从句

6、谓语动词的虚拟语气形式因时间不同而不同，这叫做混合条件句。 If you had asked him yesterday, you would know what to do now. 从句与过去事实相反，主句与现在事实相反。,2. 在宾语从句中应用 在表示命令、建议、要求等一类动词后面的从句中。 order, suggest, propose, require, demand, request, insist, command, insist + (should) do e.g. I suggest that we (should) hold a meeting next week. e.g

7、. He insisted that he (should ) be sent there.,如suggest, insist 表 “暗示、表明”、“坚持认为”时，宾语从句用陈述语气。 判断对错 You pale face suggests that you (should) be ill. Your pale face suggests that you are ill.,3. 在同位语从句和表语从句中应用 在suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气，即（should）+动词原形。 My id

8、ea is that we (should) get more people to attend the conference. I make a proposal that we (should) hold a meeting next week.,4.在主语从句中应用 it is + adj. ，当形容词是advisable, critical，crucial, desirable, essential, imperative, important, incredible, 等, 主语从句多用虚拟语气， 现在时，v用should/would +动词原形(should/would经常省略)；

9、 过去时，则用should/would + have done的形式。,It is necessary ( important, natural, strange, etc) that we should clean the room every day. It was crucial that we should have done the homework.,5. 在其他场合运用 if only if only“如果就好了”。 if only 表示 与现在事实相反 和 与过去事实相反 现在事实相反，用过去时态 与过去事实相反，用过去完成时 e.g. If only you listened to me . If only you had listened to me ., wish I wish I were as tall as you. 我希望和你一样高。 He wished he hadnt said that. 他希望他没讲那样的话。 I wish it would rain tomorrow. 我希望明天下雨就好了。,It is (high) time that It is (high) time that 过去式/ should do ，shou