高二英语Module6 Unit3 Grammar and usage课件

1、Grammar and usageUnreal conditionals虚拟语气中的非真实条件句虚拟语气可用于条件句和其它一些从句中。虚拟语气用于条件句中比较多, 情况也比较复杂, 所以要特别加以注意, 首先要判断一下是否应该用虚拟语气, 因为条件句分为两种, 一种是真实条件句, 一虚拟语气的介绍种是非真实条件句, 只有在非真实条件句中才用虚拟语气, 在真实条件句中, 要用陈述语气。非真实条件句的时态表达如果假设的情况完全不存在或者实现的可能性很小,可以说几乎没有时,就需要用虚拟语气来表达,也就是说,这时的条件句是非真实的条件句。此时的句子时态比真实条件句中的时态后退一步。If were/wa

2、s/did , would/could/might doIf I were you, I should/would go at once.If I got the chance, I would want to be a lawyer.与现在事实相反的条件句注意:在if I /he/she/it 之后, 可用were代替was。两者在意义上没有区别, 但是were更为正式, 特别是在称述心存疑心的事情时:If she were ready, we would go.Ifhadbeen/done, would/could / might have done If you had been the

3、re last night, nothing would have happened.If she had got up earlier, she would have caught the bus.与过去事实相反的条件句Ifwas/were/did, would/could/might doIf it were Sunday tomorrow, we wouldnt have an exam.If I had time tomorrow, I would certainly go to help you.与将来事实相反的条件句在与将来事实相反的条件从句中,用were to或should +d

4、o来表示,如:If I were to fail my English test, I would have to take it again at the end of the term.注意:If he should come tomorrow, I would talk to him about it.PracticeRead the dialogue at page 40 and fill in each blank with the correct form of the verb in brackets.在非真实条件句中,如果有were, had, should, 我们可以将if省

5、略,把这些词置于句首,采用倒装形式,如:虚拟条件句中的省略与倒装If I should meet her, I would tell her. = Should I meet her, I would tell her. If I were in your position, I would do it better. = Were I in your position, I would do it better.If they had made preparations, they would have succeeded.=Had they made preparations, they

6、would have succeeded.有时非真实条件句中, 主句谓语动词所表示的动作和条件从句中谓语动词所表示的动作并不同时发生, 这时动词的形式并不完全按照上述表格来进展, 而需要按照各自的时间来调整, 这样的句子就叫错综时间条件句。错综时间条件句如:If you had followed the doctors advice, then you would be all right now.If I hadnt finished my composition by now, I would be working on it tomorrow.If he had prepared wel

7、l for his lessons yesterday, he wouldnt have so many difficulties now.有时一个假设的情况并不用条件从句表示,而用其它方式来表示,这样的句子叫含蓄条件句。用with, without等介词短语或分词短语或者独立主格构造来代替条件从句。含蓄条件句We might have died without your help. =We might have died if you hadnt helped us.Having known in time, we could havestopped it. = If we had know

8、n in time, we could stopped it.在条件从句中除最常见的连词之外,尚有以下连词:otherwise; in case; but that; on condition that; unless; suppose/supposing (that); so long as; provided/providing (that)2. 用相当于if的其他连词表示虚拟构造I was busy last week, otherwise I would have come to see you.But that you had offered help, they couldnt h

9、ave finished their work on time.I would have given you more money, but I was poor then.I would have called you, but I forgot your telephone number.3. 通过上下文来虚拟Do the exercise at page 41.Finish the exercises at page118,C1 and C2More practice9、静夜四无邻，荒居旧业贫。2022/10/132022/10/13Thursday, October 13, 20221

10、0、雨中黄叶树，灯下白头人。2022/10/132022/10/132022/10/1310/13/2022 6:37:39 AM11、以我独沈久，愧君相见频。2022/10/132022/10/132022/10/13Oct-2213-Oct-2212、故人江海别，几度隔山川。2022/10/132022/10/132022/10/13Thursday, October 13, 202213、乍见翻疑梦，相悲各问年。2022/10/132022/10/132022/10/132022/10/1310/13/202214、他乡生白发，旧国见青山。13 十月 20222022/10/132022

11、/10/132022/10/1315、比不了得就不比，得不到的就不要。十月 222022/10/132022/10/132022/10/1310/13/202216、行动出成果，工作出财富。2022/10/132022/10/1313 October 202217、做前，能够环视四周；做时，你只能或者最好沿着以脚为起点的射线向前。2022/10/132022/10/132022/10/132022/10/139、没有失败，只有暂时停顿成功！。2022/10/132022/10/13Thursday, October 13, 202210、很多事情努力了未必有结果，但是不努力却什么改变也没有。2

12、022/10/132022/10/132022/10/1310/13/2022 6:37:39 AM11、成功就是日复一日那一点点小小努力的积累。2022/10/132022/10/132022/10/13Oct-2213-Oct-2212、世间成事，不求其绝对圆满，留一份缺乏，可得无限完美。2022/10/132022/10/132022/10/13Thursday, October 13, 202213、不知香积寺，数里入云峰。2022/10/132022/10/132022/10/132022/10/1310/13/202214、意志坚强的人能把世界放在手中像泥块一样任意揉捏。13 十月

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14、/10/132022/10/1310/13/2022 6:37:40 AM11、越是没有本领的就越加自命非凡。2022/10/132022/10/132022/10/13Oct-2213-Oct-2212、越是无能的人，越喜欢挑剔别人的错儿。2022/10/132022/10/132022/10/13Thursday, October 13, 202213、知人者智，自知者明。胜人者有力，自胜者强。2022/10/132022/10/132022/10/132022/10/1310/13/202214、意志坚强的人能把世界放在手中像泥块一样任意揉捏。13 十月 20222022/10/132022/10/132022/10/1315、最具挑战性的挑战莫过于提升自我。十月 222022/10/132022/10/132022/10/1310/13/202216、业余生活要有意义，不要越轨。2022/10/132022/10/1313 October 202217、一个人即使已登上顶峰，也仍要