Unit 3 language in use 基础篇一、词型转换(A)根据构词法写出下列单词的反义词。1.healthy ________ 2.careful ________3.possible ________ 4.true ________5.comfortable________ 6.usual________7.happy________ 8.helpless________(B)写出下列单词的形容词形式。1.friend ________ 2.worry ________3.waste________ 4.harm _...