使用前缀un-,in-,im-,dis-,ir-来构成形容词的反义词:
a.大多数形容词前面加un构成反义词,如:
happy- unhappy kind- unkind true- untrue able- unable comfortable- uncomfortable friendly- unfriendly
b.以c开头的形容词用前缀in-构成反义词,如:
correct- incorrect
c.以p开头的形容词用前缀im-构成反义词,如:
possible- impossible polite- impolite
d.以r开头的形容词用前缀ir-构成反义词,如:
regular- irregular
e.有些形容词用前缀dis-构成反义词,如:
honest- dishonest agreeable- disagreeable