Unit 4 Global warming Period Three Grammer课件（16张PPT）
文档属性
| 名称 | Unit 4 Global warming Period Three Grammer课件（16张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 1.2MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2019-12-02 08:39:07 | ||
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文档简介
(共17张PPT)
强调句型，你掌握了吗？
一、 It is/was+ 被强调部分 + that+剩余的部分
被强调部分是人 who/whom/ that
+剩余的部分
注意 (被强调部分是:主语，宾语，表语或状语)
强调句的连接词一般只用 that ； 强调人时，可用who (主语) 或 whom (宾语).
强调句的时态一般为“It was+…+that”
强调句的一般疑问句句型：Is / Was +it +所强调的部分+that / who/ whom?
强调句的一般疑问句句型：疑问词 +所强调的部分+that / who/ whom?
1. 我是在街上遇见她的父亲的。(强调在街上)
2. 你是8点开始工作的吗？（强调时间）
3. 正是因为她病了，他们才没见她做这项工作。
4. 他为什么不能回答这个问题？
It was in the street that I met her father.
Was it at eight o’clock that you began to work?
Because she was ill, they didn’t ask her to do the job.
→It was because she was ill that they didn’t ask her to do the job.
Why was it that he couldn’t answer the question.
（强调原因）
判断是否是强调句是，可把 It is / was …that 去掉，剩余部分在不增减任何词的情况下还是一个完整的句子，那么这种句子是强调句。
It was in the street that I met her father.
→In the street I met her father.
It was because she was ill that they didn’t ask her to do the job.
→Because she was ill, they didn’t ask her to do the job.
二、 not ... until ... 的强调形式: It is not until + 被强调部分 + that ... “直到…才…”，
主要用于强调时间状语的强调句型。
I didn't realize she was a famous film star until she took off her dark glasses.
→ Not until she took off her dark glasses did I realize she was a famous film star.
→ It was not until she took off her dark glasses that I realized she was a famous film star.
三、 句子谓语 的强调手段：
do / does / did + 动词原形
e.g 我的确相信他是老实人。
I do believe that he is an honest man.
他们昨天的确去看过你，但没见到你。
They did go to see you yesterday, but failed to meet you.
四、 What +从句+ is / was …
是名词从句结构，常用来强调主语、宾语。
e.g他最希望的是成为一名飞行员。（强调宾语）
What he wishes most is to become a pilot.
所叙述的是现在或者将来发生的事情 What +从句 is …
所叙述的是过去发生的事情 What +从句 was …
What interested me most was the beautiful scenery.
给予我们鼓励的是他为我们树立的榜样。（强调主语）
What encouraged us was the example he set for us.
What +从句+ is / was …
使我最感兴趣的是那美丽的风景。 （强调主语）
1. It ___ for this reason ___ her uncle moved out of New York.
A. is ... which B. was ... why
C. was ... that D. were ... How
2. It was ___ he said at the meeting __ disappointed me.
A. what.., that B. that.., that
C. what.., what D. that.., what
Drills
3. ---Wasn’t it Dr. Li who spoke to you just now?
--- ______ .
A. I didn't know he was B. Yes, he did
C. No, he didn't D. Yes, he was
4. Was it during the Second World War____ he died?
A. this B. then C. that D. while
5. I don’t think _____ possible to master a foreign language without much memory work.
A. this B. it C. that D. its
6. Does ____ matter if he can't finish the job on time?
A. it B. this C. that D. he
7. Tom’s mother kept telling him that he should work harder, but __didn’t help.
A. he B. which C. she D. it
8. Was ___ in 1998 ___ your teacher graduated from university?
A. that.., that B. it... which
C. it... that D. it... when
9. He felt ___ duty to work for human rights and progress.
A. it his B. his C. that is a D. that is his
10. ___ is no good ___ without doing anything.
A. This... talking B. It... to speak
C. That... to say D. It... talking
11. All the children except my partner ___ late because of traffic jam.
A. is B. are C. was D. has been
12. Your new clothes fit you, but mine ___ me.
A. don’t fit B. doesn’t fit
C. don’t fit for D. aren’t fit
It is scientists who warned that greenhouse gases would warm the earth by trapping heat energy in the atmosphere.
It is the greenhouse effect that gives the earth’s surface the average temperature of 15℃
It is fossil fuels that much of the energy used to light and heat our homes comes from.
It is the developed countries that consume the most energy in the world.
It is for centuries that carbon dioxide has the tendency to stay in the atmosphere while other greenhouse gases stay in the atmosphere only for a day or less.
Answer key for exercise 2 on page 29:
It is their very existence that low-lying countries feel is in danger from rising sea levels.
It is environmentalists who have tried to stop the earth’s temperature rising.
It is future climate changes and their effects on our environment that scientists want to find out about.
It is by several metres that the level of the sea could rise in the years ahead because of global warming.
It is outer space that might provide us with new energy sources in the future.
强调句型，你掌握了吗？
一、 It is/was+ 被强调部分 + that+剩余的部分
被强调部分是人 who/whom/ that
+剩余的部分
注意 (被强调部分是:主语，宾语，表语或状语)
强调句的连接词一般只用 that ； 强调人时，可用who (主语) 或 whom (宾语).
强调句的时态一般为“It was+…+that”
强调句的一般疑问句句型：Is / Was +it +所强调的部分+that / who/ whom?
强调句的一般疑问句句型：疑问词 +所强调的部分+that / who/ whom?
1. 我是在街上遇见她的父亲的。(强调在街上)
2. 你是8点开始工作的吗？（强调时间）
3. 正是因为她病了，他们才没见她做这项工作。
4. 他为什么不能回答这个问题？
It was in the street that I met her father.
Was it at eight o’clock that you began to work?
Because she was ill, they didn’t ask her to do the job.
→It was because she was ill that they didn’t ask her to do the job.
Why was it that he couldn’t answer the question.
（强调原因）
判断是否是强调句是，可把 It is / was …that 去掉，剩余部分在不增减任何词的情况下还是一个完整的句子，那么这种句子是强调句。
It was in the street that I met her father.
→In the street I met her father.
It was because she was ill that they didn’t ask her to do the job.
→Because she was ill, they didn’t ask her to do the job.
二、 not ... until ... 的强调形式: It is not until + 被强调部分 + that ... “直到…才…”，
主要用于强调时间状语的强调句型。
I didn't realize she was a famous film star until she took off her dark glasses.
→ Not until she took off her dark glasses did I realize she was a famous film star.
→ It was not until she took off her dark glasses that I realized she was a famous film star.
三、 句子谓语 的强调手段：
do / does / did + 动词原形
e.g 我的确相信他是老实人。
I do believe that he is an honest man.
他们昨天的确去看过你，但没见到你。
They did go to see you yesterday, but failed to meet you.
四、 What +从句+ is / was …
是名词从句结构，常用来强调主语、宾语。
e.g他最希望的是成为一名飞行员。（强调宾语）
What he wishes most is to become a pilot.
所叙述的是现在或者将来发生的事情 What +从句 is …
所叙述的是过去发生的事情 What +从句 was …
What interested me most was the beautiful scenery.
给予我们鼓励的是他为我们树立的榜样。（强调主语）
What encouraged us was the example he set for us.
What +从句+ is / was …
使我最感兴趣的是那美丽的风景。 （强调主语）
1. It ___ for this reason ___ her uncle moved out of New York.
A. is ... which B. was ... why
C. was ... that D. were ... How
2. It was ___ he said at the meeting __ disappointed me.
A. what.., that B. that.., that
C. what.., what D. that.., what
Drills
3. ---Wasn’t it Dr. Li who spoke to you just now?
--- ______ .
A. I didn't know he was B. Yes, he did
C. No, he didn't D. Yes, he was
4. Was it during the Second World War____ he died?
A. this B. then C. that D. while
5. I don’t think _____ possible to master a foreign language without much memory work.
A. this B. it C. that D. its
6. Does ____ matter if he can't finish the job on time?
A. it B. this C. that D. he
7. Tom’s mother kept telling him that he should work harder, but __didn’t help.
A. he B. which C. she D. it
8. Was ___ in 1998 ___ your teacher graduated from university?
A. that.., that B. it... which
C. it... that D. it... when
9. He felt ___ duty to work for human rights and progress.
A. it his B. his C. that is a D. that is his
10. ___ is no good ___ without doing anything.
A. This... talking B. It... to speak
C. That... to say D. It... talking
11. All the children except my partner ___ late because of traffic jam.
A. is B. are C. was D. has been
12. Your new clothes fit you, but mine ___ me.
A. don’t fit B. doesn’t fit
C. don’t fit for D. aren’t fit
It is scientists who warned that greenhouse gases would warm the earth by trapping heat energy in the atmosphere.
It is the greenhouse effect that gives the earth’s surface the average temperature of 15℃
It is fossil fuels that much of the energy used to light and heat our homes comes from.
It is the developed countries that consume the most energy in the world.
It is for centuries that carbon dioxide has the tendency to stay in the atmosphere while other greenhouse gases stay in the atmosphere only for a day or less.
Answer key for exercise 2 on page 29:
It is their very existence that low-lying countries feel is in danger from rising sea levels.
It is environmentalists who have tried to stop the earth’s temperature rising.
It is future climate changes and their effects on our environment that scientists want to find out about.
It is by several metres that the level of the sea could rise in the years ahead because of global warming.
It is outer space that might provide us with new energy sources in the future.