高中英语必修3 Unit 4 Astronomy- the science of the stars vocabulary词汇课件(共26张PPT)

(共26张PPT)
Unit 4
Words and Expressions
theory n. 学说，理论
theoretical adj. 理论的，理论上的
theorist n. 理论家
practice n.实践
practical adj. 实践的，实际的

e.g 理论联系实际
combine theory with practice
将理论付诸实践
put theory into practice


violent adj. 猛烈的，激烈的，暴力的
violently adv. 猛烈地, 激烈地
violence n. 暴力
answer violence with violence 以暴制暴
in time 及时,终于

与time相关的短语:
on time 按时;准时
in no time 立刻,马上
once upon a time 从前
from time to time 不时地
ahead of time / schedule 提前
fundamental adj.基本的，基础的
be fundamental to sth 对……是根本的，必要的
努力工作是成功的关键。
Hard work is fundamental to success.
乐观是幸福生活的根本。
Optimism is fundamental to happy life.
harmful adj. 有害的
be harmful to 对……有害
吸烟对身体有害.
Smoking is harmful to your health.
在公共汽车上看书对你的眼睛有害.
It is harmful to your eyes to read on the bus.
harm n. 伤害
do harm to 对……造成伤害
harmless adj. 无害的
reaction n.反应，回应
react … to 对……做出反应，回应
他们对这则消息作出激烈的回应。
They reacted violently to the news.
加 减 乘 除 的用法
加: Three and three is six. / Three plus three is six.
减:minus
Five minus two is three.
乘:multiply
Six multiplied by five is 30.
除: divide
Fifteen divided by three equals five.
lay eggs
lay-laid-laid-laying 放, 把...... 放在......; 产卵
He laid his books on the desk.
注意:
lay (laid; laid; laying) 放置;产卵
lie (lay; lain; lying) 躺;位于
lie (lied; lied; lying) 说谎
The naughty boy ___ to me that the hen that ___ there just now had___ two eggs the day before.
A. laid; laid; laid B. laid; lay; lain
C. lied; laid; lain D. lied; lay; laid
D
exist (v)
1. 这个计划还有一些问题。
Tip：exist in… : …存在于...中
Some problem still exist in this plan.
2. 金属可以作为蒸汽存在。
Tip: exist as… : 作为…而存在
Metals can exist as vapors.
3. 熊猫靠竹子生存。
Tip: exist on… 靠…生存
Pandas exist on bamboos.
in one’s turn 轮到某人，接着
in turn 依次地，逐个地
take turns to do sth 轮流做某事
prevent…from doing 阻止某事发生
下大雨了，不能上体育课。
The heavy rain prevents us from attending the P.E. class.
同义短语：
stop… from doing
keep…from doing
回忆：
The sunglasses protect our eyes from being hurt.
保护…不受…
puzzle n 谜团，难题
v 使~~迷惑，困惑
adj. puzzled 困惑的，茫然的 （形容人）
puzzling 令人茫然的，费解的（形容物）
pull n. & vt.拉力，拖
pull up 停车 （临时）
pull out 出站
push vt. 推
less ------ lessen
sharp------
short-------
dark --------
deep --------
broad --------
weak --------
sharpen (削尖)
shorten（使缩短）
darken（使黑，变黑）
deepen（加深，使深）
broaden（加宽)
weaken (减弱)
-en adj. v. 使…
1. 既然你忙, 就让我给你做吧。
Now that you are busy, let me do it for
you.
2. 既然人都齐了, 咱们开始干吧。
Now that everyone is here, let’s start
work．
now that同since相似，语气较弱，强调人们已知的事实。
break out (主语常为灾难，战争，瘟疫等)
它与happen, take place等词的用法一样，是不及物动词，不能带宾语，不能用于被动语态。
1) 战争爆发
　　The American Civil War broke out in 1861.
美国内战爆发于1861年。
2) 发生争吵
　　A quarrel broke out between them.
他们之间发生了争吵。
3) (火灾)发生　 A?fire?broke?out?in?his?house?last?
night.?
昨晚他家里失火了。
watch out for sth
= look out for sth 小心，当心某物。
过马路时，要小心来往的汽车
You should watch out for those passing cars when crossing the street.
Ⅱ. 用括号中所给单词或短语的适当形式翻译下列句子。
1. 尽管我们动身晚了，我们仍然及时到达了这儿。（in time）
2. 黑母鸡会下白蛋，但白母鸡不会下黑蛋。(lay eggs)
Although we started late, we arrived here in time.
The black hens can lay white eggs, but the white hens can’t lay black ones.
4. 请你告诉我怎样防止这种事情发生好吗？(prevent ... from ... )
3. 很多妇女准备在明年生宝宝。
(give birth to)
Would you please tell me how to prevent this kind of thing from happening?
Many women plan to give birth to babies next year.
5. 你知道第二次世界大战是何时爆发的吗？(break out)
6. 当你过马路时要注意车辆。
(watch out)
Do you know when the Second World War broke out?
Watch out for the cars when you cross the street.
7. 他不知如何回这封信。(puzzle)
He was puzzled (about) how to answer the letter.
8. 现在轮到我们学会如何与别人相处了。(in one’s turn)
Now in our turn we must learn how to get along with others.
9. 我昨晚熬夜了, 所以今天打不起精神。(cheer up)
10. 既然你长大了，就不应该依靠你的父母了。(now that)
I stayed up yesterday, so today I can't cheer up.
Now that you have grown up, you should not rely/depend on your parents.