经典替换词组
　　Good： positive, favorable, great, rosy, fair, awesome, promising, perfect, pleasurable, excellent, outstanding, superior, etc.
　　四级作文常用近义词集锦
　　1. important =crucial (extremely important), significant (amount or effect large enough to be important)
　　2.opinon=perspective, standpoint (means looking at an event or situation in a particular way)
　　3.abundant=ample (enough and usually extra), plentiful (enough for people's needs and wants)