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Unit 4 Word usage
1） explode
a）（cause sth. to ）burst with a loud noise; blow up
When the boiler exploded, many people were injured.
The firework exploded in his hand.
b) ( of feeling) burst out suddenly
At last his anger exploded.
( of people ) show suddenly, violent emotion
He exploded with rage.
2) spread
a) extended in size, area, etc.
The forest spreads as far as the river.
b) ( cause sth to) become more widely known,felt or suffered
The disease is spreading fast.
c) extend the surface area, width or length of sth. by unfolding or unrolling it.
Please spread a cloth on the table.
3) disappoint
a) fail to be or do sth. as good as was hoped for or desired or expected by sb.
Don’t disappoint me by being late again.
b) prevent ( hope ,plan etc) from becoming reality
It disappoints his expectation.
(常用结构) be disappointed at / about sth.
be disappointed to do sth.
be disappointed that-clause
(同根词) disappointment
4) force
a) n. influence,physical strength or power , violent strength or power
He overcame his bad habits by sheer force of will.
The soldiers took the prisoners away by force.
b) v. compel , oblige, use physical strength to move sth.
The thief forced her to hand over the money.
He forced his way through a crowd.
Useful expressions
1) in time
a) not late ; early enough
We were in time for the train.
We were in time to catch the train.
b) sooner or later; after the passing of an indefinite period of time
You will learn how to do it in time.
2) prevent …. from…….: prevent sb from doing sth.
Nothing can prevent us from going.
Bad weather prevented me from starting.
3) depend on/upon: 取决于,依靠,信赖,
Children depended on their parents for food and clothing.
Good health depends upon good food, exercise ,and getting enough sleep.
4) cheer up : take comfort ,become happy
He cheered up at once when I promised to help him.
5) now that : because of the fact
Now that you mention it , I do remember the incident.
Now that you have made mistakes, you should be punished.
6) break out :
a) ( violent events ) start syddently
Fire broke out during the night.
b) escape from a place by using force
Several prisoners broke out of the hail.
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