He is late again,so his teacher is______(happy)

问题描述:

He is late again,so his teacher is______(happy)

这道题既考全句理解又考构词法.
这是个前后有因果关系的并列句,大意是:他迟到了,所以他的老师不高兴.
根据句意,你不能直接用happy,而应该用unhappy,是“不高兴”的意思.形容词前加表否定意义的前缀 -un 就派生出一个意义与原词相反的词,意义不变.