人教版(2019)选择性必修第一册 Unit5 Working the Land 单元语法详解课件(17张PPT)

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名称 人教版(2019)选择性必修第一册 Unit5 Working the Land 单元语法详解课件(17张PPT)
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资源类型 教案
版本资源 人教版(2019)
科目 英语
更新时间 2023-03-11 22:26:38

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(共17张PPT)
Unit 5 Working the land
单元语法详解
人教版新教材选择性必修一
本单元重要语法
→主语从句
◆原句再现
However, what concerned him most was that farmers often had
poor harvests and sometimes even had a serious shortage… (教材 P50)
b. How this could be done was a challenging question at the time. (教材
P50)
c. However, whether it was possible to develop a hybrid of self-
pollinating plants such as rice was a matter of great debate. (教材 P50)
d. Today, it is estimated that about 60 percent of domestic rice
consumption in China is comprised of crops generated from Yuan’s
hybrid strains,…..(教材 P50)
e. What impresses people most about Yuan Longping is his ongoing
ability to fulfil his dreams. (教材 P51)
f. It is surprised the whole world that Yuan Longping had realized his
dream of developing seawater rice. (教材 P53)
◆ 主语从句的概念
● 主语从句在复合句中作主句的主语。它可以放在主句谓语动词之前,但多数情由it作形式主语,而把主语从句放在主句之后,请观察下面的句子
It is common knowledge that the whale is not a fish.
鲸不是鱼,这是常识。
(这里,it 为形式主语, 真正的主语是后面的主语从句 that the whale is not a fish.
◆ 主语从句的表现形式
● 由从属连词 whether 和 that引导的主语从句, 请观察以下句子
a. That the earth turns around the sun is known to all.
地球绕着太阳转这一点是众所周知的.
a. Whether he will come or not is not yet known.
他是否要来还不知道。
b. Whether they would be informed or not was not decided.
是否会通知他们还没决定。
※ 悄悄告诉你:that 虽然在其引导的主语从句中无实际意义,也不
充当句子成分,但不可省略;whether 意思是 “是否”,在句中不充
当句子成分
● 由连接代词 who, whoever, what, whatever, which, whichever 引导的主语从句,请观察以下句子
a. Who will come to dinner has been decided.
谁来吃饭已经定了。
b. What we need are more books.
我们所需要的是更多的书。
c. Whatever he said here must be kept secret.
他在此所说的一切必须保密。
d. Whoever is here gets a prize.
不管谁来,都能获得奖。
e. Which books will be taken to the village has not been decided.
哪些书本要运往那个村子还没有决定。
f. Whichever goods are sold should be checked ahead of time.
凡是出售的货物都要提前检查。
● 由连接副词 when, where, why, how, whenever, wherever, however引导的主语从句,请观察以下句子
a. When we will have a meeting isn't known to us.
我们并不知道什么时候开会。
b. Why he failed the physics exam wasn't clear.
他为什么没通过物理考试还不清楚。
c. Where he has been is still a puzzle.
他曾去过什么地方仍是个谜。
d. How he will come is not clear.
他将怎样来还不太清楚。
e. How many people will come is unknown.
有多少人会来还不清楚。
●引导词 it指代主语从句
由于主语从句位于句首,句子常显得笨重,因此常把它移至句子后部,句首用引导词it作形式主语。常有这几种主要形式
※ It is + 名词 + that…..
It is a pity that...遗憾的是…
It is a shame that...可耻的是…
It is a wonder that..令人惊讶的是....
It is no wonder tat...毫无疑问是…
It is a question that .. 问题是….
It is a fact that..事实是..
请观察以下句子
a. It is a pity that she has made such a foolish mistake.
真遗憾,她犯下这样愚蠢的错误。
b. It is no wonder that he should have passed the exam.
难怪他通过了 这次考试。
c. It is a shame that he cheated in the final exam yesterday.
可耻的是他在昨天的期末考试中作弊了
※ It is + 形容词 + that….
It is true that ... “….是真实的
It is clear that…. …是很清楚的
It is well-known that .... ….是众所周知的
It is likely that.. . …是可能的
It is obvious that... …. 是明显的
It is (im) possible that… ….是(不)可能的
It is right that .... ….是正确的
It is necessary that... ….是必要的
请观察以下句子
a. It was clear that she had done well. 很明显,她做的很好。
b. It is quite obvious that he didn't do it himself.
显然他没有亲自去做。
c. It is likely that he will go abroad.
他可能出国。
d. It is well known that she is a famous scientist.
众所周知,她是个著名的科学家。
e. It is necessary that the students should go to the countryside for
some training and practice.
学生们去乡下进行一些锻炼和实践是必要的
※ It is + 过去分词 + 从句
It is estimated that…. 据估计….
It is reported that…. 据报道….
It is said that… 据说….
It is proved that… …被证明…
It is believed that …. 据信…..
a. It's said that there was no bias.
据说那里没有偏见。
b. It's reported that 20 people were killed in the traffic accident.
据报道,那次交通事故中有 20人丧命。
c. It is hoped that they will all pass the driving test this time.
希望他们这次都通过驾驶考试。
d. It is estimated that about 30 people were injured in the accident.
据估计,大约有 30人在这次事故中受伤。
It is thought that... 据认为….
It is expected that.... 预期....
It is announced that... 据宣布….
It is hoped that... 希望…
请观察以下句子
※ It + 动词 + 从句
It doesn't matter if/whether…. ….. 没关系
It appears that…. 看来好像.....
It seems that... 看来似乎....
It happens/happened that…..碰巧
It makes no difference that…. ….无区别
请观察以下句子
a. It doesn't matter whether he will come or not.
他来不来都没有什么关系。
b. It seems that our basketball team will win the match.
看来我们的篮球队将赢得那场比赛。
c. It happened that I didn't take any money with me.
我碰巧身上没带钱。
◆考点训练
1. ________ makes mistakes must correct them.
A. What B. That C. Whoever D. Whatever
2. It worried her a bit _________ her hair was turning grey.
A. while B. that C. if D. for
3.When and why he came here ________ yet.
A. is not known B. are not known
C. has not known D. have not known
4. ________ is no reason for dismissing her.
A. Because she was a few minutes late
B. Owing to a few minutes late
C. The fact that she was a few minutes late
D. Being a few minutes late
C
B
A
C
5. ________ Tom liked to eat was different from ________.
A. That…that you had expected
B. What …that you had expected
C. That…what you had expected
D. What…what you had expected
6. ________ we go swimming every day ________ us a lot of good.
A. If...do B. That...do C. If...does D. That...does
7. It ________ Bob drives badly.
A. thinks that B. is thought what C. thought that D. is thought that
8. It's uncertain ________ the experiment is worth doing.
A. if B. that C. whether D. how
9. ________ the boy didn't take medicine made his mother angry.
A. That B. What C. How D. Which
D
D
D
C
A
10. _______ we can't get seems better than ____ we have.
A. What, what B. What, that C. That, that D. That, what
11. _______ you don't like him is none of my business.
A. What B. Who C. That D. Whether
12. _______ we'll go camping tomorrow depends on the weather.
A. If B. Whether C. That D. Where
13. _________is going to do the job will be decided by the Party committee.
A. That B. Why C. How D. Who
14. _______we'll finish translating the book depends on the time.
A. When B. Why C. What D. That
15. ________he won't go there is clear to all of us.
A. Where B. What C. Why D. This
A
C
B
D
A
C
16. ____________the house will be built will be discussed at
tomorrow's meeting.
A. If B. Where C. That D. What
17. _______you come or not is up to you.
A. What B. If C. Why D. Whether
18. _______makes mistakes must correct them.
A. Who B. Anyone C. Whoever D. Anybody
19. __________team will win the match is a matter of public
concern.
A. Which B. That C. If D. How
20. _______leaves the room last ought to turn off the lights.
A. Anyone B. The person C. Whoever D. Who
B
D
C
A
C
That’s all!
Thank you!