Unit 4 Astronomy: the science of the stars
【学习目标】：掌握重点词组和特殊句型的用法
【学习重点】：黑体单词和词组
【学习难点】：总结重点词组
【自主学习】
Ⅰ短语互译1．消失，经过 2．及时，总有一天
3．阻止，制止 4．依靠，信赖
5．感到高兴 6．既然，由于
7．一般而言 8．突发，爆发
9与…不同 10．冷却
Ⅱ根据中文提示，填写所缺单词的适当形式。
1. We have established socialist （制度）.
2. He doesn’t believe in （宗教）.
3. It is so in (理论), but not in practice.
4. The struggle became more and more (激烈的).
5. Fresh air is (基础的, 基本的) to good health.
6. Fruit juices can be (有害的）to children‟s teeth.
7. Water consists of hydrogen and (氧气).
8. Salt （存在） mostly in sea water.
9. The stone rolled down the hill by (引力).
10. A （生物学家） is mainly studying biology.
Ⅲ用短语的正确形填空
cool down， now that， depend on， break out， block out， in time，
watch out for，as if prevent...from
1．The war between the two countries.
2． wild animals when you go up the hills.
3．You ought to write you know the
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address.
4．You must bear in mind that your parents hope to you to become a good doctor.
5．We put a curtain across the window to the sunlight.
6．It took Charles a long time to after the heated argument.
7.Lacey has a back injury that may ______ him ______ playing in the tomorrow’s game.
8.Jane shouted in surprise ______ she had seen a large sum of money.
Ⅳ单项选择
1 Doctors always tell us that drinking too much________our health，but some people don’t care.
A．is harm to B．does harmful to C．is harmful to D．do harm to
2________you’ve got a chance，you should make full use of it.
A．Now that B．After C．Although D．As soon as
3---My goodness! I failed again in the computer test.
---________. The world is not at an end.
A. Look up B. Pick up C. Cheer up D. Keep up
4 you like it or not, you'll have to give up smoking.
A. If B. Whether C. How D. Why
5 The young dancers looked so charming in their beautiful clothes that we took
pictures of them.
A. many of B. masses of C. the number of D. a large amount of
6 How the big forest fire has remains to be a mystery.
A. taken place B. turned up C. broken out D. broken up
7 We must do whatever we can to the river being polluted any more.
A. separate B. keep C. prevent D. guard
8 Freezing winter is harmful orange trees.
A. for B. to C. of D. at
9. She started as an office junior, and became the director of the whole company.
A. in surprise B. in return
C. in turn D. in time
Ⅴ重点短语
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