to的用法归纳

一：表示相对，针对

be strange (common, new, familiar, peculiar, distinct, sensitive, immune, vulnerable, indispensable) to

air is indispensable to life.

aircrafts are vulnerable to interference caused by radiation.

this injection will make you immune to infection.

二：表示对比，比较

1：以-ior结尾的形容词，后接介词to表示比较，如：superior ,inferior,prior,senior,junior

   the quarrel happened prior to my arrival.

2: 一些本身就含有比较或比拟意思的形容词，如equal，similar，equivalent，analogous

  a is similar to b in many ways.

3：表示一些先后顺序的形容词，如：second,subsequent,next,preliminary,preparatory

   subsequent to the war,they returned to their hometown.

4: to也偶尔出现在个别动词之后,与动词形成固定词组,表示比较,如:prefer to,compare to,in contrast to  

compare to sth.表示比喻或比拟,而compare with sth.表示比较,如:

  world is usually compared to a stage

  compared with his past,he has changed a lot.

  prefer的正确句型是:prefer a to b