Unit 4 Astronomy-the science of the stars

Book3 Unit 4 Astronomy: the science of the stars
一、根据中文填写所缺单词的适当形式。
1. What would happen if there were no __________ (大气层).
2. Fruit juices can be ________ (有害的) to children’s teeth.
3. Without ________ (氧气), animals can’t live.
4. There is a big underground railway ___________（系统）in London.
5. Water is ___________ (基本的) to any forms of life.
6. Does life __________(存在)on Mars.
7. There is ________ (猛烈的) wind outside and the snow is so heavy.
8.Stephen Hawking’s Black Hole ______________ (理论) is well-known to the scientists.
9.I was ______________(迷惑)by the maths problem.
10.My favourite subject is ______________(生物).
11.This young lady always speaks ________________(温和地).
12.What’s the _____________(气候) like in your country
13.Albert Einstein is a great _______________(物理学家).
14.I often dreaming of taking a ________________(宇宙飞船) to the moon.
15.The plane suddenly ______________ (坠落) and many people were killed.
二、翻译下列短语。
1.及时；终于______________ 2.下蛋______________ 3.产生；分娩__________________
4.阻止；制止_______________5.in one’s turn_____________6.carbon dioxide___________
7.block out_________________ 8.cheer up______________ 9.now that__________________
10.break out______________ 11.watch out_______________12.get the hang of_____________
三、请从下面方框中选择适当的单词或短语，并用其正确形式填空。
in time, prevent… from, depend on, cheer up, now that,
cool down, get the hang of, exist, break out
1. The coffee is ________, so you’d better drink it right now, or it will be too cold for you.
2. We must try to ________ the new telephone system before we use it so that we may use it freely.
3. If we don’t hurry up, we won’t be ________ to catch the airplane.
4. He was unhappy at first but soon ________ after lunch.
5. The sun is very important to the mankind. Man ________ it for heat and light.
6. You needn’t work today. ________ you are ill, you may have a rest at home.
7. The First World War ________ in 1914 and ended in 1918.
8. Explorers have been sent to Mars to make sure whether life ________ on it.
9. I miss my hometown so much that nothing can ________ me ________ going back.
四、请根据中文意思及提示，翻译下列句子。
1.每个人都知道吸烟是对身体有害的。(be harmful to)
2.我们要做一些事情来阻止全球变暖。（prevent…from）
3.非常感谢你及时来帮助我。（in time）
4.生下小孩之后，她继续工作。(give birth to)
五、根据课文内容填空。
As the result of “Big Bang”, the violent earth slowly settled into a globe1__________ (move) around the sun. The gases which were to make the earth’s atmosphere came 2_________ being from the explosion of the dust ball, with water 3____________(follow) them while the earth cooled down. 4_____________many millions of years, the first 5____________(extreme) small plants began to appear 6_________ the surface of the water, multiplying and filling the sea and oceans, which encouraged the later development of early shellfish and all sorts of fish. 7________ time went by, green plants taking carbon dioxide and producing oxygen came to land and 8________(grow) into forest. Later the chains of lives continued, such as insects, amphibians, reptiles, dinosaurs and mammals, the typical（典型的）of 9____________ is human being. They don’t only do good to the earth, 10_________ cause damage to to.
主语从句
一、找出下列的主语从句，并把它们划线。
1 That he will come is certain.
2 Whether it will please them is not easy to say.
3 What seems easy to some people seems difficult to others.
4 Which side will win is not clear.
5 Why he did it remains a mystery.
6 When they will start is not known yet.
7 How he became a great scientist is known to us all.
8 Who will take part in the meeting has not been decided.
9 Whoever breaks the law will be punished.
10 Where she is from is unknown.
二、Complete the sentences using what, whether, where, when，who, why, how or that.
1.(_____ is needed for success) is your hard work.
2.(______ they will arrive )has been told to the teacher.
3.(_____ we will go tomorrow )hasn’t been decided yet.
4.(___ can join in the sport meet) is decided by the teacher.
5.(________ it will rain or not) is not clear.
6. (____ the earth is becoming warm) is a good topic for research.
7.(______ the earth is a solid ball) is known to us all.
8. _____ you don’t like him is none of my business.
9. _____ he said at the meeting astonished everybody present
10. ________ the 2000 Olympic Games will be held in Beijing is not known yet.
11. ________ we’ll go camping tomorrow depends on the weather.
12. ________ leaves the room last ought to turn off the lights.
附：用it形式主语的that从句有：
It + be + 形容词 ＋ that从句
It + be + -ed分词 ＋ that从句
It + be + 名词 ＋ that从句
It + 不及物动词 ＋ that从句
It appears that…似乎…
It happens that …. 碰巧…
It occurred to me that……我突然想起……