高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists导学案

这是一份高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists导学案，共3页。
Grammar —— 表语从句
1．As a yung dctr, Jhn Snw became frustrated because n ne knew hw t prevent r treat chlera.
2．One thery was that bad air caused the disease.
3．The ther was that chlera was caused by an infectin frm germs in fd r water.
4．The truth was that the water frm the Brad Street pump had been infected by waste.
5．That's why we've given yu the letter.
6．It lks as if it is ging t rain.
[我的发现]
(1)句1中系动词became后接形容词作表语；句2、3、4、5、6中作表语的是从句。
(2)句2、3、4中的连接词that 在句中只起连接作用，没有含义，且不可省略。
(3)句5和句6中引导表语从句的连词有一定的含义，分别意为“为什么”和“好像”。
一、概念
在主从复合句中充当表语的从句，叫作表语从句。它常位于系动词之后，用来说明主语是什么或怎么样。
二、连接词的用法
1．that引导表语从句时的用法：(1)无意义；(2)不充当成分；(3)不可省略。
The truble is that she has lst his address.
问题是她弄丢了他的地址。
My suggestin is that we shuld tell him the secret.
我的建议是我们应该告诉他这个秘密。
2．whether引导的表语从句
The questin remains whether they will be able t help us.
问题是他们能否帮助我们。
[点津] if不能引导表语从句。
3．连接代词和连接副词引导的表语从句
The prblem is hw we can find him.
问题是我们如何找到他。
He is n lnger what he was.
他已经不再是以前的他了。
That's where yu are wrng.
那就是你不对的地方。
4．because, as if/as thugh引导的表语从句
It sunds as if/as thugh smene is kncking at the dr.
听起来好像有人在敲门。
That's because yu can't appreciate music.
那是因为你不能欣赏音乐。
三、注意事项
1．why和because引导的表语从句的区别
I didn't phne her, and that's why she gt angry with me.(强调“她对我生气”这一结果)
我没有给她打电话，那就是她对我生气的原因。
I didn't phne her, and that's because I gt angry with her.(强调“生气”这一原因)
我没有给她打电话，那是因为我生她的气了。
2．表语从句中的虚拟语气
在表语从句中，当主句中的主语是：advice, suggestin, prpsal, request, rder, idea等时，从句谓语形式是“shuld＋动词原形(shuld可以省略)”。
My suggestin is that we (shuld) start early tmrrw.
我的建议是我们明天一早就出发。
eq \a\vs4\al([即时演练]) 补全句子
①The fact was that he didn't really wrk hard．
事实是他没有真正努力工作。
②The questin is whether the film is wrth seeing．
问题是这部电影是否值得看。
③Nw it seems as thugh/as if she has knwn Millie fr years.
现在看起来好像她认识米莉已经许多年了。
④My advice is that yu (shuld) practise speaking English as ften as pssible.
我的建议是你应该尽可能地经常练习说英语。
⑤That's where I first met her．
那就是我第一次遇见她的地方。
⑥The prblem is wh is really fit fr the hard jb．
问题是谁真正适合做这份艰苦的工作。
That's why ...
意为“那是……的原因”，强调结果
That's because ...
意为“那是因为……”，强调原因