2015-2016学年高中英语 Unit 4 Astronomy the science of the stars Sentence Explanation Word同步讲练(含答案）

Unit 4 Astronomy the science of the stars Sentence Explanation Word
请和你的同学一起认真分析下面句子，并补全所缺内容。这种学习方式能逐步提高你理解长难句的能力。
1. 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. (P25)
【分析】
① 本句是一个主从复合句。
② 主句是What it was to become was uncertain until between 4.5 and 3.8 billion years ago, when引导________从句。
③ 主句中包含一个由what引导的主语从句, what在从句中作________。
【句意】随后它会变成什么没人能知道，直到38～45亿年前，这团尘埃才慢慢地形成一个固体的球状物。
【仿写】杰克打算做什么我不知道，直到第二天早上，他才告诉了我他的计划。
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2. The earth became so violent that it was not clear whether the shape would last or not. (P25)
【分析】
① 本句是一个主从复合句。
② 主句为The earth became so violent。
③ 从句为that引导的结果状语从句，that从句中又包含一个由________引导的主语从句，it是形式主语。
【句意】地球（开始）变得激烈动荡，不知道这个固体形状是否会继续存在下去。
【仿写】任务非常艰难，不知道能否在这么短的时间将它完成。
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3. What is even more important is that as the earth cooled down, water began to appear on its surface. (P26)
【分析】
① 本句是一个主从复合句。
② 主句是What is even more important is，that引导________从句。
③ 主句中包含一个由what引导的主语从句, that从句中包含一个由________引导的时间状语从句。
【句意】更为重要的是，地球冷却了下来，地球的表面就开始出现了水。
【仿写】更为奇怪的是，我下公交车时，又看见了那位老太太。
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4. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (P26)
【分析】
① 本句是一个包含两个名词性从句的主从复合句。
② whether life will continue on the earth for millions of years to come是________从句，其中动词不定式to come作millions of years的后置定语；whether this problem can be solved是________的宾语。
【句意】所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。
【仿写】我们是否去野餐取决于天气是否会变晴。
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参考答案
1.【分析】定语；宾语
【仿写】What Jack was going to do was not clear to me until the next morning when he told me his plan.
2.【分析】whether
【仿写】The task is so difficult that it is not clear whether it can be completed in such a short time or not.
3.【分析】表语；as
【仿写】What is even stranger is that as I was getting off the bus, I saw the old woman again.
4.【分析】主语；depend on
【仿写】Whether we will go for a picnic depends on whether the weather will become sunny.