什么时候to是介词?to作介词时怎么样一眼就能看出来,有技巧吗??还是只 ...答:1:以-ior结尾的形容词,后接介词to表示比较,如:superior ,inferior,prior,senior,juniorThe 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,analogousA 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,...