人教版必修三英语 Unit4 Astronomy：the science of the stars language_points 课件（共29张PPT）

Unit4
language points

Amy
Key sentence in paragraph1.2
1. However, according to a widely__________(accept) theory, the universe began _____a “Big Bang” _____threw matter in ______ directions
2 The earth became so violent that it was not clear ________the shape would last or not.
3 They were in time to produce carbon, nitrogen, water vapour and _____gases, _______were to make the earth’s atmosphere
accepted
that
all
with
whether
other
which
(L.2) … a “Big Bang” that threw matter
in all directions.=in every direction朝四面八方
①He has a good sense of direction.
他的方向感很好。
②He did the work under my direction.
他在我的指导下做这件事。
③Follow the directions for the use of the medicine.请遵照此药的使用说明。
拓展：
③ 在某人的指导下: ______ one’s direction
under
2. (L.6) What it was to become was uncertain…
be to do

be + doing:_________ be + done:__________
联想
正在…
被动
be to do 将来时
表示:必须做某事\注定会发生\按计划会发生
①He was to regret that decision for the rest of his life.
他注定会为那个决定后悔余生。
②Mirror told me that she was to settle in China.
米拉告诉我她计划要在中国定居。
③The medicine is to be taken three times a day after meals.
这种药必须/应该是饭后吃，一天三次。
1.This film _____ this Sunday.
A. is going to show B. is showing
C. is to be showed D. will have been show
2.The students were told that they ____ at the school gate at
2：00 the following afternoon.
A. met B. will meet C. were to meet D. were met
3.In such dry weather，the flowers will have to be watered if they _________.
A. have survived B. are to survive
C. would survive D. will survive
3. The earth became so violent that it was not clear whether the shape would last or not.
violent 猛烈的，激烈的
violently adv. 猛然地，激烈地
violence n. 暴力；激烈；
a violent storm 一场猛烈的暴风雨
a violent movie 一部暴力电影
a violent temper 火爆脾气
翻译：这是一部充满色情与暴力的电影。
This is a film( that is) full of sex and violence.
4. (L.10) It exploded loudly with fire and rock.
【探究】
① The bomb exploded in Iraq last night.
② The children exploded into/with laughter.
③ The city's population has?exploded?in the last few years.?
【拓展】adj. explosive 爆炸性的
n. explosion 爆炸
Unemployment became an _________?issue (一个爆炸性问题).
v. 爆炸，炸开
v.（指感情）迸发 (=burst into…)
v.（指人口）突然或迅速增加
explosive
5. (L.10) They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earth’s atmosphere.
in time:
① 最终/迟早(=finally/sooner or later)
译: 我迟早会回来的.
I’ll come back in time.
② 及时；不迟(=not late)
A. 她会及时回来准备晚餐.
She will be back ____ _____ _____ prepare dinner.
B. 你认为我们能及时赶上火车吗?
Do you think we can get there __ ____ ____ the train?
翻译: 我来得及去上学。(in two ways)
I am in time to go to school. / I am in time for school.
in
be in time to do sth.
be in time for sth.
in
time
to
time
for
拓展：与time相关的短语:
on time __________
at times __________
in no time ___________
once upon a time __________
kill time ______________
准时
有时;偶尔
立刻；马上
从前
消磨时间
6. (L.13)…which were to make the earth’s atmosphere.
① 大气层
② 氛围
会谈在友好的气氛下进行。
The talk was conducted ____ ___ _______
__________.
in
a
friendly
atmosphere
第三四段
1 Water had also appeared on other planets like Mars but, ______(like)the earth, it had disappeared
____(late)

The continued _______(present) of water allowed the earth to dissolve harmful gases and acids into oceans and seas.
This produced a chain reaction_______ made it possible for life to develop.
4 They produced young ________(general) by laying eggs.
unlike
later.
presence
which
generally
7. Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later.
unlike prep. 和…不同，不像
dislike vt. 不喜欢，厌恶
n. 嫌恶，反感，不喜爱
dislike doing sth. 不喜欢/厌恶做某事
8. (L.22) The continued presence of water allowed the earth to dissolve harmful gases and acids into oceans and seas.
harmful adj. ___________
e.g. Smoking is harmful to your health.
=Smoking _____ _____ _____ your health.
【拓展】
① harmless __________
联想：useless，helpless, homeless, …
② There is no harm in reading more books.

有害的
无害的
does
harm
to
There is no harm in doing sth.:做某事没有坏处
9. (L.25) This produced a chain reaction which made it possible for life to develop.
译:这产生了________，使生命的发展________.
注: make it + adj. + (for sb.) to do sth.: 使得(某人)做某事…
(形式宾语) (真正的宾语)
连锁反应
成为可能
①The heavy rain made it impossible for us to arrive on time.
大雨使我们不可能准时到达。
②Tina made it clear that she would leave the company.
蒂娜明确表示她将离开这家公司。
10. (L.30) They multiplied and filled the oceans and seas with oxygen.
multiply: v.
①乘: 2 multiplied by 4 is 8.
②增加(=increase)


③ Mosquitoes multiply rapidly in summer.
high school
homework
繁殖
Our homework have multiplied since we came to high school.
multiply
自从我们读高中以后
作业就已经成倍增加了
vt. 使增加/繁殖/相乘
vi. 乘；繁殖；增加
multi-= many
Multicultural
多元文化的;
Multicoloured
多色彩的
multinational
多国的;
multimedia
多媒体
11. (L.39) They produced young generally by laying eggs.
它们一般是通过孵蛋而繁衍后代的.
复习：“lie/lie/lay”的各种形式
动词原形
过去式
过去分词
现在分词
第三人称
单数
lie
(说谎)
lie
(躺)
lay
(下蛋)
laid; laid; laying lays

lied; lied; lying lies
lay; lain; lying lies

He laid his books on the desk.
12. (L.40) They laid eggs too and existed on the earth for more than 140 million years.
exist: v.
① Could life exist in the desert? _________
② There exists a beautiful garden in our School.
= There ______ a beautiful garden in our School.
【拓展】
n. existence:存在
搭配: come into existence = come into being 开始存在、成立
译: When did this world come into existence?
Attention：exist 不用进行时态！
存在
is
There exist = There be (某处存在…/有…)
different -- difference (n.) 课本P.28 confident – confidence (n.)
联想
13. (L.41) Why they suddenly disappeared still remains a mystery.
remain用法小结：
1) remain作系动词(看作“be”理解),意为“仍然；依旧”
① Peter成为了一个经理，而Jack仍然是个工人。
Peter became a manager, but Jack remained ___ ________.
② 尽管外面很冷，房间里还是那么暖和。
Though it is cold outside, the room remained ______.
③ 他不得不继续住在医院，直到身体好转。
He had to remain _____ ________ until he was better.
④ 虽然我们三番五次地请她坐下，她还是站着。
Though we repeatedly asked her to sit down, she remained ___________.
⑤ 他们仍然被锁在房间里。
They remained __________ in the room.
a worker
remain + n.作表语
remain + adj.作表语
warm
in hospital
locked
remain +介词短语 作表语
remain + 分词作表语 (doing表主动；done表被动)
standing
2) remain作vi(不及物动词)
① 表示“留下；剩下”
e.g. They went, but I remained.
② 表示某事“尚待、有待于以后被处置”，后加“to be done.”
e.g. One problem remains _______________(solve).
e.g. That remains ________________(prove).
3) remains: n. 表示“遗迹；剩余物”
e.g. The?remains?of the supper were taken away.
4）remaining: adj. “剩余的” (=left)
译: 剩余的钱
____________
____________
to be solved
to be proved
remaining 放在n.前；left放在n.后，都表示“剩余的”
Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.
A. to see B. to be seen C. seeing D. seen
2. The lady said she would buy a gift for her daughter with the_______.
A. 20 dollars remained B. 20 dollars to remain
C. remained 20 dollars D. remaining 20 dollars
3. It was already past midnight and only three young men _______ in the teahouse.
A. left B. remained 　 C. delayed D. deserted
4. Please remain _______ until the plane has come to a complete stop.
A. to seat B. to be seated　C. seating D. seated
第五段
1 Thus, they have, in _____turn, become ____most important animals on the planet.
2 They are putting too much carbon dioxide into the atmosphere,____ prevents heat from escaping from the earth.
3_________life will continue on the earth for millions of years to come will depend on (whether this problem can_________(solve).
their
the
which
Whether
be solved
(
)
14. (L.46) Thus, they have, in their turn, become the most important animals on the planet.
in one’s turn: 依次，轮流
译: When it is in my turn, I am too excited to speak.
【拓展】
in turn: 依次；反过来 (≠ in return--作为回报)
take turns to do/doing sth.: 轮流做某事
turn ______: 调小音量；拒绝
turn ______: 调大音量；出现
turn ______: (使)…变成敌人
down
up
against
【即时演练】用 “up/ down/ in /against” 填空
① The help we give to others will ____ turn give ourselves pleasure.
② He said that he would die than to turn _______ his country.
③ He tried to join the army but was turned ______ because of poor health.
④My boss hasn’t turned ___ - I hope he isn’t ill.
in
against
down
up
15. (L.48) …,which prevents heat from escaping from the earth.
prevent sb. (from) doing sth.:阻止某人做某事
= stop sb. (from) doing sth.
= keep sb. from doing sth.
注: keep sb. from doing sth.中from不可省略,
但在被动中, from都不可省。
Ex:
① We must prevent them from making trouble.
② You should prevent the child from injuring himself.
① In order to keep the children ___ swimming in the river, Mr. Smith kept them ___ staying home all day.
from; from B. from; 不填
不填; from D. 不填；不填
② Some measures should be taken to __ the soil ____.
prevent; to wash away
stop; being washed away
keep; to wash away
keep; washing away
B
B
16. (L.50) (Whether life will continue on the earth for millions of years to come) will depend on (whether this problem can be solved).
depend on: 依靠,取决于…
① You can’t depend on others to help you.
② All living things depend on the sun for their growth.
【拓展】
That depends.
It depends.
It all depends.
口语
“看情况”
①我们都靠你来做决定了．
We’ll all ______________ to make a decision.
②明天是否能开校运会取决于天气．
Whether to hold the sports meeting or not will _______________________.
③Tell him what you want to say; he’s a man to ____.
A. count B. believe C. trust D. depend
解析:
count on sb.
believe in sb.
depend on sb.
trust (in) sb.
depend on you
depends on the weather
C
即时演练
同义
“相信/信赖某人”