新概念英语第二册课件Lesson64（共23页）

这是一份新概念英语第二册课件Lesson64（共23页），共23页。PPT课件主要包含了课文理解，语法讲解，虚拟语气等内容，欢迎下载使用。
D yu remember the English Channel?
1. In 1858, a French engineer, Aimé Thmé de Gamnd, arrived in England with a plan fr a twenty－ne－mile tunnel under the English Channel. 1858年，一位名叫埃梅·托梅·德·干蒙的法国工程师带着建造一条长21英里、穿越英吉利海峡的隧道计划到了英国。
2. He said that it wuld be pssible t build a platfrm in the centre f the Channel. 他说，可以在隧道中央建造一座平台。 3. This platfrm wuld serve as a prt and a railway statin. 这座平台将用作码头和火车站。
4. The tunnel wuld be well－ventilated if tall chimneys were built abve sea level. 如果再建些伸出海面的高大的烟囱状通风管，隧道就具备了良好的通风条件。 5. In 1860, a better plan was put frward by an Englishman, William Lw. 1860年，一位名叫威廉·洛的英国人提出了一项更好的计划。
6. He suggested that a duble railway tunnel shuld be built. 他提议建一条双轨隧道
7. This wuld slve the prblem f ventilatin, fr if a train entered this tunnel, it wuld draw in fresh air behind it. 这样就解决了通风问题, 因为如果有一列火车开进隧道，它就把新鲜空气随之抽进了隧道。 draw in ( = take in ) 吸入、吸进
8. Frty－tw years later a tunnel was actually begun. 42年以后，隧道实际已经开始建了。 9. If, at the time, the British had nt feared invasin, it wuld have been cmpleted. 如果不是因为那时英国人害怕入侵，隧道早就建成了。
10. The wrld had t wait almst anther 100 years fr the Channel Tunnel. 世界不得不再等将近100年才看到海峡隧道竣工。 11. It was fficially pened n March 7,1994,finally cnnecting Britain t the Eurpean cntinent. 它于1994年3月7日正式开通，将英国与欧洲大陆连到了一起。
本课所需掌握词组： in the center f serve as at the time put frward slve a prblem
语气：英语动词有三种语气：陈述语气，祈使语气和虚拟语气。1：陈述语气：用来表示所说的话是事实或者提出疑问，广泛用于陈述句，疑问句和感叹句。2：祈使语气：表示所说的话是请求，命令，指示或者劝告。
虚拟语气：1.表示所说的话不是事实，而是一种假设，猜测，怀疑等。（在条件从句或者让步状语从句中）2：一种表示说话人的愿望，要求，命令，建议等（在宾语从句，表语从句，同位语从句）
虚拟语气在条件状语从句中的用法
条件句有真实条件句和非真实条件句两种。真实条件句所表的假设是可能发生和实现的，是与实施相符的。E.g. if it is fine tmrrw, I will g t visit my grandpa.非真实条件句所表达的假设则不可能或不大可能发生或实现的，与事实相反的情况。If I were a bird, I wuld fly t America.
虚拟语气在非真实条件句中
表格记忆：1 与现在事实相反If I wn the lttery, I wuld buy an expensive car.2 与过去事实相反If he had driven mre carefully, he wuld nt have had the car accident yesterday.
与过去事实可能相反或发生实现几率较小。If yu gt/were t/shuld get a full mark next time. I wuld hld a party fr yu
If I were yu, I wuld give yur sister a hug.与现在事实相反。If I had taken yur advice, I wuldn’t have made a mistake.与过去事实相反。If it rained tmrrw, they wuldn’t g utside.与明天事实可能相反。
Suggest, demand, rder, prpse, insist cmmand ,request, desire后的宾语从句中：（shuld)+动词原形。I suggest that we (shuld) set ff at nce.I demanded that he (shuld) answer me immediately.