文档介绍：SAT 语法拾遗
App-Ark 运营顾问
Jason Lu
mainly reason people take medicine
is to relieve pain.
分析：mainly 的错误是明显的！作为副词，不能修饰后面的名词，需改为形容词 main。
而句中的干扰因素为 people take medicine，完 整 的 为 the reason why people take medicine，
定语从句引导词被省略。这一类题目基本上不会考到。
二、介词
显然，介词搭配是介词这一块最为重要的知识点，只要背出了这些特定搭配，一般
是不会丢分的。
以下是常见的介词搭配：
Accuse of Complain about Free from
Agree to/ with/ on Confide in Hide from
Apologize for Consist of Hope for
Apply to/ for Contribute to Insist on/ upon
Approve of Cover with Participate in
Be able to do Decide on/ upon Prevent from
Be capable of Depend on/ upon Protect from
Believe in Dream about/ of Recover from
Be responsible for Escape from Release from
Care about/ for Excuse for Succeed in
Compare to/ with Forget about Wait for /on
例 5：The teeth in the upper jaw function together those in the lower jaw to cut, tear, and grind
food.
分析：和⋯一起，应该为 together with。
例 6：The rotation of the Earth on its axis i