初中阶段加前后缀构成反义词归纳(供参考)

初中阶段加前后缀构成反义词归纳1. un-

able- unable

comfortable-uncomfortable

fair- unfair

friendly- unfriendly

grateful- ungrateful(不领情的)

happy- unhappy

healthy- unhealthy

helpful- unhelpful(无帮助的)

important- unimportant

kind- unkind

known- unknown

lucky- unlucky

necessary- unnecessary

pleasant- unpleasant

popular- unpopular

tidy- untidy

usual- unusual

welcome- unwelcome

2. –less

careful-careless

helpful-helpless(无助的，需要帮助的) useful- useless

harmful- harmless

hopeful-hopeless

meaningful- meaningless

end- endless

3. dis-

honest- dishonest

agree- disagree

like- dislike

appear- disappear

advantage- disadvantage

4. in-

correct- incorrect

active- inactive

5.im-

possible- impossible

polite- impolite

patient- impatient

6.ir-

regular- irregular

一类：加前缀-un

例词：unhappy unusual ungrateful unhelpful

unkind

第二类：加后缀-less

例词：careless homeless hopeless

第三类：加前缀-im

例词：impolite(不礼貌的) impatient（不耐心的）

impossible（不可能的）

第四类：加前缀-in

例词：incorrect（不正确的）inactive（不活跃的）

第五类：加前缀-dis

例词：dishonest（不诚实的）

第六类：加前缀-ir

例词：irregular（不规则的）

归纳：初中阶段绝大多数形容词都是加前缀-un构成其否定形式，记忆起来工程浩大，比较困难。但如果我们把不是加-un前缀而是加-im, -in, -dis, -ir等前缀的这七个单词牢记的话，那么

就能达到事半功倍的效果。