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1、考点清单 高考对撞 Unit 4Unit 4 Astronomy Astronomy ；the science of the starsthe science of the stars 1 C。此题考查修饰词与名词的搭配。“paper”为不可数名词，排除 B和D，句意应为“充足的纸”而不是“太多的纸”，所以用“plenty of ”，故此题答案为C。(知识点在课本26页) 例1.We always keep _spare paper, in case we run out. A.too much B.a number of C.plenty of D.a good many 3 高考对撞 解析
2、 2 B。 此题考查固定词组：remain to be done形式主语“it”指代后 面的“whether in the finals”，故此题答案为B (知识点在课本 26页) 例2.It remains _ whether Jimll be fit enough to play in the finals. A.seen B.to be seen C.seeing D.to see 3 高考对撞 解析 3 A。为“发生”，符合题意；B扑灭；C、D出来。本题意为“火灾 发生时，我正在睡觉” (知识点在课本31页) 例3.I was still sleeping when the fire
3、_, and then it spread quickly. A.broke out B.put out C.came out D.got out 3 高考对撞 解析 4 D。 本题考察It的用法。这里It用作形式主语， “ that improvements in health care will lead to stronger, more prosperous economy”为真正的主语。(知识点在课本29 页) 例4._ is our belief that improvements in health care will lead to stronger, more prosper
4、ous economy. A.As B.That C.This D.It 3 高考对撞 解析 5 A。 struggle to do sth 努力做某事，为固定用法。又因I与hear 之间存在被动关系，故用不定式的被动语态。(知识点在课本 31页) 例5.The children talked so loudly at dinner table that I had to struggle _. A.to be heard B.to have heard C.hearing D.being heard 3 高考对撞 解析 6 D。 此处考查not until强调句型，应将not和 until一
5、起提前。( 知识点在课本25页) 例6.It _ we had stayed together for a couple of weeks _ I found we had a lot in common. A.was until; when B.was until; that C.wasnt until; when D.wasnt until; that 3 高考对撞 解析 7 考点清单 考点1 主语从句 be to do 表将来 What it was to become was uncertain until between 4.5 and 3.8 billion years ago w
6、hen the dust settled into a solid globe. 随后它会变成什么没人知道，直到4538亿年前，这团尘 埃才慢慢地变成一个固体的球状物。 8 考点清单 考点1 主语从句 be to do 表将来 （1）What it was to become是主语从句，作全句的主语 ；when引导一个定语从句，作4.5 and 3.8 billion years ago的定语。 （2）be to do sth 这一结构在句中表示 “即将”。 The president is to arrive in Rome at 3 oclock in the afternoon. 总统将
7、于下午三点抵达罗马。 9 考点清单 考点2 It 形式主语句 The earth became so violent that it was not clear whether the shape would last or not. 地球变得激烈动荡，人们不清楚这个固体的形状是否会继 续存在下去。 此句中It作形式主语，真正的主语是whether引导的从句 。 It常用来作形式主语，以保持句子的平衡。 Its no use crying over spilt milk. (谚语) 覆水难收。 10 考点清单 考点3 as引导的不同句型 What is even more important
8、is that as the earth cooled down, water began to appear on its surface. 更为重要的是，地球冷却了下来，表面开始出现了水。 （1）此句中What is even more important为主语从句； that as the earth cooled down, water began to appear on its surface为表语从句，其中含有as 引导的时间状语从句。 11 考点清单 考点3 as引导的不同句型 （2）as作“虽然，尽管”讲时，引导让步状语从句，句子要用倒 装语序，即要把从句中的表语、状语或动词
9、原形提到as前。 Young as I am, I already know what career I want to follow. 我虽然还小，可是对要从事的职业已胸有成竹了。 12 考点清单 考点4 whether 与 if Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 在未来的千百万年中, 生命是否在地球上延续将取决于这个 问题能否得到解决。 13 考点清单 考点4 whether 与 if
10、 此句中Whether life will continue on the earth for millions of years to come是一个主语从句，whether this problem can be solved是一个宾语从句。 14 考点清单 考点4 whether 与 if whether 与 if 两者都有“是否”的意思。 * 在下列情况下一般只用whether而不用if: (1) 与or not 连用时： He doesnt know whether to go to Beijing or not. (2) 引导表语从句，同位语从句以及位于句首的主语从句时只 用whe
11、ther; The problem is whether the work is worth doing. (3) 做介词的宾语时，只用whether； Just now they talked about whether they would help us. 辨析 15 考点清单 考点4 whether 与 if (4) 在不定式前时，只用whether； I want to know whether to have a meeting in this afternoon. (5) 在有些动词(如discuss)之后。 u 在下列情况下一般只用if而不用whether: (1) 在引导否定
12、概念的宾语从句时，只用if而不用whether。 (2) 还可以引导条件状语从句，表“如果”，而whether不能。 He asked me if I had finished my work. 他问我是否完成了工作。 辨析 16 考点清单 考点5 twice as far as“是的两倍远 ” But when I tried to step forward, I found I was carried twice as far as on the earth and fell over. 但当我试着向前迈步的时候，我发觉我被送出去很远，步子 的跨度竟是在地球上的两倍。 倍数的表达法：用times表倍数，通常用于三倍以上，两倍常 用twice。 17 考点清单 考点5 twice as far as“是的两倍远 ” (1)A is three (four / ) times the size (height, length)of B The new building is four times the size (the height) of the old one. 这座新楼是那座旧楼的四倍大(高)。 18
