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或prefer doing A to doing B,但当prefer后接动词不定式时,表示比较的介

　　词to就要改成rather than ,如:

　　The undaunted soldier preferred death to surrender.

　　Many people prefer spending money to earning money.

　　They prefer to pursue careers rather than remain home as house wives.

　　5: to与及个别的名词构成比较之意,如:alternative

　　Going to an under water concert is a great alternative to going to dinner.