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111Unit 4 Astronomy: the science of the stars课文要点（模块）.课文词汇填空（旨在复习本课文中的单词拼写和主要词语等）根据课文内容完成下面语法填空，注意单词拼写和词语用法： As the result of Big Bang, the violent earth slowly settled into a globe 1 (move) around the sun. The gasses which were to make the earths 2 （大气层）came into being from the explosion of the dust ball, with water 3 (follow) them while the earth cooled down. It allowed the beginning for life. Many millions of years 4 , the first 5 (极度的) small plants began to appear 6 the surface of the water, 7 (繁殖) and filling the sea and oceans, which encouraged the later development of early shellfish and all sorts of fish. As time passed, green plants taking carbon dioxide and producing 8 （氧气）came to land and grew into forest. Later the chains of lives continued, such as insects, amphibians, reptiles, dinosaurs and mammals, the typical of 9 is human being. They dont only do 10 to the earth but cause damage to it.答案：1. moving 2. atmosphere 3. following 4. later 5. extremely 6. on 7. multiplying 8. oxygen 9. which 10. good.课文大意概括（旨在训练用30个单词概括大意的能力） 阅读课文，试着用30来个单词概括课文大意或将下面的短文译成英语， 短文解释了生命如何在地球上开始的。首先，地球爆炸和产生水。因为水的存在，然后植物和动物，包括人类逐渐在地球上出现。_答案：The passage explains how life began on the earth. At first, the earth exploded and produced water. And then plants and animals including human beings appeared on the earth gradually because water exists on the earth.课文佳句背诵与仿写（旨在培养对难句的理解和写作能力）1【原句】What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. 模仿要点 句子结构： what主语从句is till +时间名词定语从句【模仿1】他要给我什么礼物一直不知，直到昨天下文他来看我是我才知道。_答案：What gift he would give me was uncertain until yesterday afternoon when he came to see us.【模仿2】没人知道我们将要得到什么样的工作，直到3年后我们从大学毕业以后才知道。_答案：What jobs we will get is unknown until 3 years later when we will graduate from university. 2【原句】What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 模仿要点 句子结构: 主语从句 is that表语从句【模仿1】他想告诉我们的是一天下文当他在回家的路上看见一只小鸟受伤了。_答案：What he wanted to tell us is that one afternoon when he was on his way home he saw a bird which was dying.【模仿2】他缺席的原因是他在上学时被一辆小车撞伤了。_答案：Why he was absent is that he was badly hurt by a car when he went to school. 3【原句】They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. 模仿要点 句子结构：which 引导一个定语从句对上句情况的进一步说明。【模仿1】我们常常看到有人乱丢乱吐，这弄得我们的环境很脏_答案：We often see some people throw rubbish and spit everywhere，which makes our environment dirty. 【模仿2】她的父母非常感激我们，医生也高度评价了我们的急救，这使得我们意识到学习急救的必要性。_答案：Her parents were very thankful to us and the doctors thought highly of our first aid, which made us realize the necessity of learning first aid.111
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