2019-2020年高中英语人教版选修六教学案：Unit 4 Section Ⅲ Grammar— it的用法(2)(含答案)

2019-2020年高中英语人教版选修六教学案：Unit 4 Section ⅢGrammar— it的用法（2）(含答案)

语法图解

探究发现

①There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.

②It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.

③They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.

④It was during the 20th century that the temperature of the earth went up about one degree Fahrenheit.

[我的发现]

这些句子都是强调句，句中的黑体词部分标出了句中的强调句结构，即：it_is/was＋被强调部分＋that/who ...句首词用“it”；be动词总是用单数形式，即is或was。连接词一般用that，当强调部分是人时，强调连接词也可用who。

一、强调句的基本用法

强调句就是把句中要强调的部分(通常是主语、宾语、状语或状语从句)放在It is/was和that/who之间，原句中剩余部分放在that/who之后。

1．强调句的陈述句式

“It is/was＋被强调部分＋that/who＋其他剩余部分．”

The 2022 Winter Olympic Games will take place in Beijing and Zhangjiakou.

→It is in Beijing and Zhangjiakou that the 2022 Winter Olympic Games will take place.

在北京和张家口将要举行2022年冬季奥运会。

[名师点津](1)强调句中的连接词只用that(指人或物)或who(只指人)，且都不可省略。

(2)强调句可以强调主语、宾语和状语，但不能强调谓语，强调谓语动词要用do/does/did ＋动词原形。

He did write to you last week.

上周他确实给你写了信。

2．强调句的一般疑问句式

“Is/Was it＋被强调部分＋that/who＋其他剩余部分？”

Is it in Beijing and Zhangjiakou that t he 2022 Winter Olympic Games will take place?

是在北京和张家口将要举行2022年冬季奥运会吗？

3．强调句的特殊疑问句式

“被强调的疑问词＋is/was it＋that＋其他剩余部分？”

What's it that Professor Liu teaches us this year?

刘教授今年到底教我们什么？

How is it that she turned down our help?

什么原因使得她拒绝我们的帮助的？

When and where was it that you got to know Mary?

究竟在何时何地你认识的玛丽？

Who was it that came up with the bright idea?

究竟是谁提出了好的主意？

4．强调句的识别方法

如果把强调结构去掉，句子的意思是完整、清楚的，句子结构也是完整的，这个句子就是强调句。如果把强调结构去掉后，意思不通顺，结构也不完整，则句子不构成强调句式。

It was because he refused to obey the policeman that he was sent to the police station.

他是因为拒绝服从警察而被送到警察局的。

把强调结构去掉，则变为：

He was sent to the police station because he refused to obey the policeman.

因为他拒绝服从警察，所以被送到了警察局。

去掉强调部分后，句子结构和意义仍然完整，说明这是个强调句。

[即时演练1]

(1)句型转换

They met each other in that supermarket.

①It_was_in_that_supermarket_that they met each other. (强调原句中的地点状语)

②Was_it_in_that_supermarket_that they met each other? (把①变为一般疑问句)

③Where_was_it_that they met each other? (提问①句中的地点状语)

(2)用适当的连接词填空

①(2015·湖南高考改编)It was when we were returning home that I realized what a good feeling it was to have helped someone in trouble.

②(2014·湖南高考改编)It's not doing the things we like, but liking the things we have to do that makes life happy.

③(2014·四川高考改编)Was it because Jack came late for school that Mr. Smith got angry?

二、强调句的特殊用法

强调句与其他句型的结合，注意以下几种用法：

1．强调句型与名词性从句的结合

句式特征为：整个强调句型用作名词性从句或者在强调句型中含有名词性从句时，从句要用陈述语序。

Do you know w hat it is tha t they will do next?

你知道他们下一步究竟要做什么吗？

2．强调句型与定语从句的结合

句式特征为：在强调句型的被强调部分或其他部分中找出一个先行词，附上修饰该部分的定语从句，这样整个句子结构就变得非常复杂。应特别注意不要混淆定语从句的关系词和强调句型中的that/who部分。

It was last Spring when they worked together(when引导的定语从句) that they began to become good friends.

是在一起工作的去年的春天里他们开始成为了好朋友。

It was in the school where they had their schooling (where引导的定语从句) that they had a get-together again twenty years later.

二十年后，他们是在曾接受教育的学校里又聚在了一起。

3．强调句型与not ... until句型的结合

“It is/was not until＋被强调部分＋that＋其他剩余部分．”

It was not until he came back that I knew the result.

直到他回来，我才知道结果。

[即时演练2]

(1)单句语法填空

①The question is whom it is that we can turn to for help.

②It is in the hotel where he stayed last night that he lost his mobile phone.

③(2015·福建高考书面表达)It is not the story itself but what is reflected in the story that counts.

(2)补全句子