以下是®無憂考網(wǎng)為大家整理的關(guān)于《高一英語必修三知識點總結(jié)：Unit4》，供大家學習參考！
Unit 4 Astronomy: the science of the stars
1. be fundamental to… 對……是基本的，必需的This is fundamental to a true understanding of the book. 這對真正理解這本書十分重要。
2. in sb’s presence 當著某人的面，有某人在場
She asked them not to discuss the matter in her presence. 她要求他們不要當著她的面討論這個問題。
3. be harmful to… 對……有害的
= do harm to…The air here is harmful to our health. 這里的空氣對我們有害。
4. There is no harm in doing sth. 不妨做某事
= It does no harm to do sth.
He may not be able to help but there’s no harm in asking him. 他可能幫不了忙，但是求他一下倒也無妨。
5. exist on… 靠……生存
= live on…They exist on very little food. 他們靠極少的食物生存。
6. exist in… 存在于……中
Several people believe the Devil exists in the world. 少數(shù)人認為世界上存在惡魔。
7. in a puzzle 不知如何是好，很迷惑
I am in a puzzle about what he said. 我對他說的話迷惑不解。
8. in time
1)遲早;最后 = sooner or later; eventually
2)及時;不遲 = not late
You’ll learn how to do it in time. 你早晚能學會做這件事的。
Will I be in time for the train? 我趕得上那趟火車嗎?
9. give birth to… 生出，產(chǎn)出
She gave birth to a second child in January. 一月份的時候她生了第二個孩子。
The Chinese nation has given birth to many national heroes and revolutionary leaders. 中華民族養(yǎng)育了很多民族英雄和革命領(lǐng)袖。
10. in one’s turn 輪到某人也(做某事)，也They, in their turn, made a proposal. 他們接著也提了一個建議。
11. by turns 輪流，交替
The two brothers looked after their sick mother by turns. 兄弟倆輪流照看他們生病的母親。
12. in turn 依次
Each man in turn stood up and spoke. 每個人依次站起來發(fā)言。
13. It is one’s turn to do sth. 輪到某人做某事
It’s your turn to wash the dishes. 今天輪到你洗盤子了。
14. prevent sb./ sth. (from) doing sth. 阻止某人做某事
= stop sb./ sth. (from) doing sth.
= keep sb./ sth. From doing sth.The heavy rain prevented us going on, but we didn’t lose heart. 大雨阻止我們前進，但是我們不灰心失望。
15. escape from… 從……逃出
Who helped him escape from the prison?是誰幫他逃出監(jiān)獄的?
16. block out
1)擋住(光線或聲音)
2)忘掉，抹去(不愉快的事)
Black clouds blocked out the sun. 烏云遮住了太陽。
Over the years she had tried to block out that part of her life. 多年來她努力想把生命中的那一段經(jīng)歷從記憶中抹去。
17. block off (用障礙物)隔開，封鎖
Police blocked off the street after the explosion. 在發(fā)生爆炸之后，警方用路障封鎖了那條路。
18. block up 塞住，封住(孔，洞)
My nose is blocked up because of a heavy cold. 因患重感冒，我的鼻子堵了。
19. crash (sth.) into sth. (把某物)撞到某物上He crashed his car into a wall. 他的汽車撞到了墻上。
20. pull in
1)(火車等)進站
2)吸引(觀眾、支持這等)
The train pulled in right on time. 這列火車正點到站。
The new show is certainly pulling in the crowds. 新的表演一定很吸引人。
21. pull out
1)拔出，取出(+of…)
2)(火車等)駛離(車站)
He pulled out a gun. 他掏出一支槍
I arrived as the last train was pulling out. 我到達時，末班列車剛剛開出。
22. pull down 拆毀
The cinema she used to visit had been pulled down. 她常去的那家電*已經(jīng)拆除了。
23. pull up (使車輛)停下
The driver pulled up at the traffic lights. 司機在紅綠燈前把車停住。
24. pull through 恢復知覺或康復
She was so ill that it seemed unlikely that she would pull through. 她病得很厲害，看來不大可能康復了。
25. the mass of 大多數(shù)的(人)
The mass of workers do not want this strike. 大多數(shù)工人不愿舉行這次罷工。
26. be a mass of sth. 充滿;布滿
The garden was a mass of colour. 花園里的景色五彩繽紛。
His face was a mass of bruises after the fight. 他打完架后臉上青一塊紫一塊的。
27. in the mass 總體上;總的來說
She says she doesn’t like children in the mass. 她說從總體上講她不喜歡孩子。
28. cheer up 感到振奮;(使)高興起來
The fans cheered up when they saw their favorite star. 看見自己喜歡的明星，“粉絲”們興奮起來了。
Tom bought his girlfriend a large diamond ring to cheer her up. 為了哄女友高興，湯姆給她買了一棵大鉆戒。
29. cheer sb. on 為某人加油;鼓勵
The crowd cheered the runners on as they started the last lap. 賽跑進入最后一圈時，觀眾為運動員加油鼓勁。
30. now that… 既然……
= since…Now that everyone is here, let’s discuss the problem. 既然大家都到了，讓我們開會吧。
31. get the hang of (doing) sth. (口語)掌握(做)某事的竅門、要點
Have you got the hang of driving a car? 你掌握開車的竅門的了嗎?
I don’t quite get the hang of his speech. 我不十分了解他講話的要點。
32. break out (火災、戰(zhàn)爭等)爆發(fā)
World War II broke out in 1939. 第二次世界大戰(zhàn)是1939年爆發(fā)的。
33. come about 發(fā)生
(是不及物動詞短語，無被動語態(tài))How did it come about that you got lost? 你怎么會迷路了呢?
34. watch out (for…) 當心，提防
You’ll be cheated if you don’t watch out. 如果你不當心，就會上當受騙。
Watch out for cars when you cross the road. 過馬路時要當心車輛。
35. 倍數(shù)的表達方法：
1)A is + 倍數(shù) + as + adj./ adv. + as B
“A 是B的……倍”
2)A is + 倍數(shù) + 比較級 + than B
“A比B……倍”
3)A is + 倍數(shù) + the size (height, length, width等) + of B
“A 是B的……倍”
The population of China is about six times as large as that of the United States. 中國的人口大約是美國的6倍。
The jet fighter flies three times as fast as sound. 這架噴氣式戰(zhàn)斗機的飛行速度是音速的3倍。
This room is three times larger than that one. 這個房間比那個房間大3倍。
This room is three times the size of that one. 這個房間是那個房間的3倍大。
