人教版英语必修三Unit 4 Astronomy: the science of the stars language points （共23张PPT）
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| 名称 | 人教版英语必修三Unit 4 Astronomy: the science of the stars language points （共23张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 7.9MB | ||
| 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 | 2020-03-22 17:14:49 | ||
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(共23张PPT)
How life began on the earth?
a cloud
of dust
1.“Bigbang”
2.a violent solid globe
produce gases
3.atmospere
4.water appeared
5.plants appeared
6.animals appeared
produce oxygen
1. They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere.
最终产生了碳、氮气、水蒸气和其他多种气体，从而
形成了地球的大气层。
(1) in time ①最终，迟早= finally/eventually
例: If you keep on, you'll succeed in time.
②及时 We were just in time for the bus.
Word and Phrase
on time 准时
例： Can we arrive in Beijing on time or not?
in no time 立刻
例：We'll do up your car in no time at all.
at no time 决不=never
例：(辽宁卷) At no time did they actually break the rules of the game. It was unfair to punish them.
ahead of time 提前
all the time 一直
at any time 在任何时候
at a time 一次，每次
It one time 曾经，同时
at the same time 同时
from time to time 时不时地，偶尔
take one' s time从容不迫，不着急 to do
as time goes on 随着时间的推移
2. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.
This produced a chain reaction, which made it possible for life to develop.
很多科学家相信，由于地球上长期有水存在，它使得地球把有害气体和酸性物质溶解在海洋里。
这就产生了连锁反应,使得生命有可能开始发展了。
(1)主语从句，表语从句
例1(陕西省)
The manager wants to see changes in the company,and I am sure he will .
A. in particular
B. in turn
C. in charge
D. in time
(2)atmosphere n.
大气层，大气 the atmosphere
气氛，氛围 a comfortable/pleasant atmosphere
①The teacher tries to create an atmosphere in class his students can practice their speaking skills.
②(福建) She has a gift for creating an atmosphere for her students allows them to communicate
freely with each othel.
A. which B. where C. what D who
(2)presence n. 存在；出席，在场
in the presence of sb.= in sb.'s presence 当着某人的面
例“Raj feels rather awkward in the presence of ladies.
present adj. 出席的，在场的；现在的，当前的
（3）allow v.允许， 许可
allow doing sth. 允许做某事
例：We dont's allow smoking here.
allow sb. to do sth. 允许某人做某事
例： He wont's allow himself to fail.
(4) dissolve into (使)溶入，(使)溶解；(使)融化成
例: Snow and ice dissolve into water
(5)make it possible for sb. to do sth.
句型：vt+(形式宾语)+adj./n+( for sb.) to do sth(可变)
vt: make, think, consider;, find, feel, judge
例: I don't think it necessary to argue with him.
They make it a rule to read English words everyday.
I don't think it worthwhile going to such a place.
例1:
The difference in thickness and weight from the earlier version makes the iPad4 more comfortable .
A held B holding C be held D.to hold
例2：
Nowadays people sometimes separate their waste to make it easier for it .
A. reusing B reused
C. reuse D.to be reused
做题小技巧：去掉形式宾语it，变换成正常语序
3. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish.它们繁殖起来就使得海洋充满了氧气，这为早期的贝类及其他各种鱼类的发育进一步创造了条件。
(1) multiply v.乘，迅速增加；(使)繁殖
例： multiply 2 and 4 together you get 8
multi- 多
multicultural adj. 多元文化的
multimedia adj. 多媒体的
multinational adj. 跨国的，多民族的
(2)encourage vt.
①鼓励，鼓舞
encourage sb. to do sth.鼓励某人做某事
②激励，促进
High prices encouraged farming.高价格刺激 了农业
encouraging adj.令人鼓舞的
encouragement n.鼓舞，鼓励
courage n.勇气
discourage vt.使泄气
4. They laid eggs too and existed on the earth for more than 140 million years. However, 65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery.
它们也生蛋，在地球上生存了1.4亿多年。然而,6500万年前，恐龙时代结束了。它们为什么会突然灭绝至今仍是个谜。
词形 含义 过去时 过去分词 现在分词
lie 说谎 lied lied lying
lie 躺，位于 lay lain lying
lie 放置；下蛋 laid laid laying
(2)exist vi. 存在；生存
exist on 靠…生存
existence n.存在
existent adj. 存在的，实际的
n. 例：remain a beginner（3） adj. 例：remain silent
doing 例：remain standing
remain+ done 例：remain untouched
to be done 例：remain to be seen
介词短语 例：remain in London
5.Thus they have, in their turn, become the most important animals on the planet.
于是，他们接着成为这个行行上最重要的动物。
（1） thus adv. 因此，这样
（2）in one's turn 轮到某人
例： When it was in my turn, I was too excited to speak.
in turn 依次；反之，反过来
by turns 轮流；交替地
take turns to do sth./in doing sth.轮到某人做某事
(广东汕头)
A heavy learning burden leads to unhealthy behaviors such as poor eating habits, which damage the health of students.
A.in its turn B.in return
C.in turn D.by turns
轮到它的顺序；作为回报；反之；轮流
6.They are putting too much carbon dioxide into the atmosphere,which prevents heat from escaping from the earth into space.
他们把过多的二氧化碳释放到大气层中，这使得地球上的热不能释放到太空中去。
（1）prevent v. 阻止，预防prevent sb./sth.(from)doing sth. 主动句中from可以省略，
stop sb./sth.(from)doing sth. 被动句中不能省略
keep sb./sth.from doing sth.
protect sb./sth.fromdoing sth.保护…免受…
例5： China recently tightened its waters control near the Huangyan Island to prevent Chinese fishing boats from in the South China Sea.
A.attacking B. having attacked
C.being attacked D.having been atacked
译文：最近，中国加强对黄岩岛附近水域的管控；以防止中国渔船在南海受到攻击。
7.When life will continue on the earth for million of years to come will depend on whether this problem can be solved.
在未来的数百万年终，生命能否在地球上延续取决于这个问题能否得到解决。
（1）depend v. 依靠，依赖
depend on =count on= rely on sb.信任，依靠某人
It all depends.看情况
例：----How often do you eat out?
----______,but usually once a week.
How life began on the earth?
a cloud
of dust
1.“Bigbang”
2.a violent solid globe
produce gases
3.atmospere
4.water appeared
5.plants appeared
6.animals appeared
produce oxygen
1. They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere.
最终产生了碳、氮气、水蒸气和其他多种气体，从而
形成了地球的大气层。
(1) in time ①最终，迟早= finally/eventually
例: If you keep on, you'll succeed in time.
②及时 We were just in time for the bus.
Word and Phrase
on time 准时
例： Can we arrive in Beijing on time or not?
in no time 立刻
例：We'll do up your car in no time at all.
at no time 决不=never
例：(辽宁卷) At no time did they actually break the rules of the game. It was unfair to punish them.
ahead of time 提前
all the time 一直
at any time 在任何时候
at a time 一次，每次
It one time 曾经，同时
at the same time 同时
from time to time 时不时地，偶尔
take one' s time从容不迫，不着急 to do
as time goes on 随着时间的推移
2. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.
This produced a chain reaction, which made it possible for life to develop.
很多科学家相信，由于地球上长期有水存在，它使得地球把有害气体和酸性物质溶解在海洋里。
这就产生了连锁反应,使得生命有可能开始发展了。
(1)主语从句，表语从句
例1(陕西省)
The manager wants to see changes in the company,and I am sure he will .
A. in particular
B. in turn
C. in charge
D. in time
(2)atmosphere n.
大气层，大气 the atmosphere
气氛，氛围 a comfortable/pleasant atmosphere
①The teacher tries to create an atmosphere in class his students can practice their speaking skills.
②(福建) She has a gift for creating an atmosphere for her students allows them to communicate
freely with each othel.
A. which B. where C. what D who
(2)presence n. 存在；出席，在场
in the presence of sb.= in sb.'s presence 当着某人的面
例“Raj feels rather awkward in the presence of ladies.
present adj. 出席的，在场的；现在的，当前的
（3）allow v.允许， 许可
allow doing sth. 允许做某事
例：We dont's allow smoking here.
allow sb. to do sth. 允许某人做某事
例： He wont's allow himself to fail.
(4) dissolve into (使)溶入，(使)溶解；(使)融化成
例: Snow and ice dissolve into water
(5)make it possible for sb. to do sth.
句型：vt+(形式宾语)+adj./n+( for sb.) to do sth(可变)
vt: make, think, consider;, find, feel, judge
例: I don't think it necessary to argue with him.
They make it a rule to read English words everyday.
I don't think it worthwhile going to such a place.
例1:
The difference in thickness and weight from the earlier version makes the iPad4 more comfortable .
A held B holding C be held D.to hold
例2：
Nowadays people sometimes separate their waste to make it easier for it .
A. reusing B reused
C. reuse D.to be reused
做题小技巧：去掉形式宾语it，变换成正常语序
3. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish.它们繁殖起来就使得海洋充满了氧气，这为早期的贝类及其他各种鱼类的发育进一步创造了条件。
(1) multiply v.乘，迅速增加；(使)繁殖
例： multiply 2 and 4 together you get 8
multi- 多
multicultural adj. 多元文化的
multimedia adj. 多媒体的
multinational adj. 跨国的，多民族的
(2)encourage vt.
①鼓励，鼓舞
encourage sb. to do sth.鼓励某人做某事
②激励，促进
High prices encouraged farming.高价格刺激 了农业
encouraging adj.令人鼓舞的
encouragement n.鼓舞，鼓励
courage n.勇气
discourage vt.使泄气
4. They laid eggs too and existed on the earth for more than 140 million years. However, 65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery.
它们也生蛋，在地球上生存了1.4亿多年。然而,6500万年前，恐龙时代结束了。它们为什么会突然灭绝至今仍是个谜。
词形 含义 过去时 过去分词 现在分词
lie 说谎 lied lied lying
lie 躺，位于 lay lain lying
lie 放置；下蛋 laid laid laying
(2)exist vi. 存在；生存
exist on 靠…生存
existence n.存在
existent adj. 存在的，实际的
n. 例：remain a beginner（3） adj. 例：remain silent
doing 例：remain standing
remain+ done 例：remain untouched
to be done 例：remain to be seen
介词短语 例：remain in London
5.Thus they have, in their turn, become the most important animals on the planet.
于是，他们接着成为这个行行上最重要的动物。
（1） thus adv. 因此，这样
（2）in one's turn 轮到某人
例： When it was in my turn, I was too excited to speak.
in turn 依次；反之，反过来
by turns 轮流；交替地
take turns to do sth./in doing sth.轮到某人做某事
(广东汕头)
A heavy learning burden leads to unhealthy behaviors such as poor eating habits, which damage the health of students.
A.in its turn B.in return
C.in turn D.by turns
轮到它的顺序；作为回报；反之；轮流
6.They are putting too much carbon dioxide into the atmosphere,which prevents heat from escaping from the earth into space.
他们把过多的二氧化碳释放到大气层中，这使得地球上的热不能释放到太空中去。
（1）prevent v. 阻止，预防prevent sb./sth.(from)doing sth. 主动句中from可以省略，
stop sb./sth.(from)doing sth. 被动句中不能省略
keep sb./sth.from doing sth.
protect sb./sth.fromdoing sth.保护…免受…
例5： China recently tightened its waters control near the Huangyan Island to prevent Chinese fishing boats from in the South China Sea.
A.attacking B. having attacked
C.being attacked D.having been atacked
译文：最近，中国加强对黄岩岛附近水域的管控；以防止中国渔船在南海受到攻击。
7.When life will continue on the earth for million of years to come will depend on whether this problem can be solved.
在未来的数百万年终，生命能否在地球上延续取决于这个问题能否得到解决。
（1）depend v. 依靠，依赖
depend on =count on= rely on sb.信任，依靠某人
It all depends.看情况
例：----How often do you eat out?
----______,but usually once a week.
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