习惯用法经常出错，而且看了答案也不知道为什么该这样选，有没有什么有效的提高方法或资料？
1. Troy quatities of more than thirty rare gases, most of them industrial by-products, threaten to warm the earth's atmosphere evern more rapidly than carbon dioxide during the next fifty years.
正确答案to warm the earth's atmosphere even more rapidly over the next fifty years than carbon dioxide will.
will后面不加动词也可以吗？
2. In its most recent approach, the comet Crommelin passed the earth at about the same distance and in about the same position, some 25 degrees above the horizon, that Halley's comet will pass the next time it appears.
正确答案as will Halley's comet
疑惑类似第一题。还有是不是as引导就要倒装呢？
3. The new contract forbids a strike by the transportation union.
正确答案是A，原句正确
forbids the transportation union from striking为什么就不正确？
4.Researchers have questioned the use of costly and experimental diagnostic tests to identify food
alleargies, such
as milk, that supposedly disrupt normal behavior.
A
B to identify food allergies, like like和such as的区别，我还是很混乱
C to identify food allergies, such as to 正确 第一个to后面是动词，第二个to后面milk是名词，搞不懂
D for identifying food allergies, like that of
E for identifying food allergies, such as for 如果C对的话，这个选项为什么不对？
5. Artificial intelligence emerged during the late 1950's as an academic discipline based on the assumption that computers could be programmed to think like people 为什么不是think like people do？
6.Although films about the American West depict coyotes as solitary animals howling mournfully on the tops of distant hills, in reality these gregarious creatures live in stable groups that occupy the same territory for long periods.
原句正确
C选项为什么错了？coyotes are depicted as solitary animals howling mournfully on the tops of distant hills in films about the American West
相反我觉得原句的主语与后半句不符合，不如C选项顺，谁能告诉我为什么，谢谢~~~
当比较相似性时，
as是连接词后面会接句子
like是介系词，后面接名词，也就回答你的Q5
回到as句子时，当动词作比较时，要注意助动词
如果只有写到will之类的助动词，代表省略will后面的动词。
如Q2. passed ….will pass. 另外并不是as开头一定要倒装，可倒也可不倒。
如Q1. threaten….will threaten.
惯用语
Q3. forbid用法请查字典没有from的用法
Q4.使用such as时要注意两种要同类，food
allergies与milk不同类，所以需借用allergy to这个用法，所以写成such to milk
Q6. 主动语态比较佳
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