重点词组解析
1. 表示数量“大量”短语
修饰可数名词：a large number of, a great/good many, quite a few
修饰不可数名词：a great deal of, a large amount of, quite a little
既可修饰可数，又可修饰不可数名词：a lot of / lots of , plenty of, a large quantity of
e. g. The country has a great deal of oil, coal and natural gas.
这个国家有大量的石油、煤炭和天然气。
The squirrel hides a large quantity of nuts inside trees. 松鼠在树干里藏了很多坚果。
There are plenty of eggs in the house. 家中有很多蛋。
A large number of people came from all parts of the country to visit the exhibition.
许多人从国内各地来参观这个展览。
A large amount of money is spent on tobacco every year.每年要花费大量金钱在烟草上。
2. stop…(from) doing阻止或避免某种情况的发生
= prevent…(from) doing= keep…from doing
stop/ prevent后的from可以省略，但在被动语态中不能省。
e. g. The rain prevented him from coming. 大雨使他不能来。
She was prevented / stopped / kept by illness from taking the exam.她因病未能参加考试。
3. in one’s opinion = in the opinion of sb. 在某人看来
e. g. in my opinion, 在我看来in their opinion在他们看来
in everyone’s opinion在每个人看来 in the opinion of most people在大多数人看来
4. a waste of …浪费
waste在这里是不可数名词，但可以和a连用
e. g. It’s a waste of time to wait any longer. 再等下去是浪费时间。
It’s a waste of breath to talk to him. 和他交谈是白费口舌。
It’s a waste of time arguing with him. 你和他争辩是浪费时间。
What a waste of energy! 这多么浪费精力！
5.make use of利用
在名词use前面可以加上不同的形容词来表示不同程度的利用。
e. g. make good use of合理利用，make the best use of尽量利用，make full use of充分利用
名词use还可组成其他词组：
e. g. be in use在使用中 be of great use很有用处go out of use不被使用，
废弃come into use开始被使用bring / put …to use加以利用for the use of供……使用
6.be famous/known著名，为众人所知
(1)be famous / known for因为……成名, 表示成名的原因
e. g. Switzerland is famous / known for its mountains. 瑞士以它的山而闻名。
He is famous for his history story. 他因为他写的历史小说而出名。
He is known for his readiness to help others.大家都知道他总是乐于帮助别人。
(2)be famous / known as以什么身份而成名
e. g. She is known as a great singer. 大家都知道她是个大歌星。
(3) be famous / known to为人所知
e. g. He is known to every one of us. 我们每人都知道他。
7.come on在这里表示“开始(……起来)，袭来……”。
e. g. It came on dark. 天黑了。
Rain came on/ it came on to rain just before daybreak. 天快亮时开始下起雨来。
come on有其他含义:
(1)跟着来e. g. You go first. I’ll come on immediately. 你先走，我马上跟来。
(2)进步，进展，成长e. g. The corn is coming on splendidly. 玉米长势好极了。
(3)(问题、案件等)被提出来e. g. The case will soon come on for trial. 这案件很快就要开审。
come的其他短语
(1) come out出现，被获知，出版，结局
e. g. The stars come out (= appeares) as soon as it is dark.天一黑星星就出来了。
The news came out (= became known) yesterday.这个消息是昨天传出来的。
When will your book come out (= be published)? 你的书何时出版？
How did the ball game come out (= end)? 这场球赛的结局如何？
(2) come about发生
e. g. How did all this come about (= happen/ take place)? 所有的这一切是怎样发生的？
It came out (= happened) in this way. 这事就是这样发生的。
(3)come back恢复，重现于记忆中。
e. g. They asked me to rest till my health came back.他们要我一直休息到恢复健康为止。
(4)come up走近，发芽，被提出
e. g. Christmas is coming up soon. 圣诞节快到了。
The seeds haven’t come up yet. 种子还没有发芽。
The question will come up tomorrow. 这个问题将于明天被提出来讨论。