在雅思阅读中，动词不定式，to do, 是一个很难理解的地方，尤其是在关于文章的中心内容的时候。现在环姐就为大家详细解析一下雅思阅读中的动词不定式，希望对大家的阅读理解有所帮助。
1）作主语
1.）To know something about Englishis one thing, to know English is quite another.
2.）To solve a dispute means to turn opposing positions into a single outcome.
注：也可以用形式主语It 代替
常用的模式有：
for sb to do sth.(adj.对事用for)
It is+ adj. +
of sb to do sth.（adj.对人用of）
l ) It is necessary for us to realize the importance of our environment.
2) It is very considerate of you to give me a lift.
这类常见的形容词有: silly, stupid, wise, clever, considerate, thoughtful, kind, nice, polite, impolite, rude, honest, etc.
注意： 在It is adj + of sb to do sth.的结构中，由于形容词是形容逻辑主语sb的，所以我们可以把它同义改为sb. is+to do sth; 而在 it is adj. + for sb to do sth 的结构中，由于形容词不是修饰sb而是修饰不定式to do，所以它不能改为 sb. is+ adj +to do sth。例如:
l ) We are very necessary to realize the importance of our environment.(wrong)
2) You are very considerate to drive me home. (correct)
2）作表语
1.）Our goal is to create high quality routes for cyclists and walkers.
2.) The best way to solve the air pollution generated/made/produced on both the streets and highways is to encourage public transportation.
3）作定语
1) My best friend Jacky is a very interesting girl who always has a lot of funny stories to tell.
2) We should save water for the generations to come.
3) This process resulted in performance measures that greatly enhanced SAH's ability to improve productivity and quality.
4) Children brought up in a big family can have more opportunities to acquire knowledge and other useful experiences from different members of the family.
4）作状语
1) Man makes constant discoveries about the secrets of the universe only to find out how little we still know about it.
2) I am very glad to hear from you so soon.
此外, so as to, in order to, too…to…,enough…to…, so…as to…等一些常用的句型中的不定式都是用来作状语的。
1) Opposing positions must be turned into a single outcome so as to/in order to solve a dispute.
2) Sometimes words may be too limited to express our ideas clearly and adequately.
3) In our period of “knowledge explosion”, a man’s rang of knowledge will never be wide enough to cover every field of research and study.
4) Would you be so kind as to send me a copy of the prospectus of 2003 academic year.
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