题目内容：

the reason for his success is _____ he worked hard
a.why b.that c.because d.for
为什么选b?语法分析下

优质解答

首先要确定好,这句话是主系表结构,the reason for his success 是主语,is是系动词,is后面很明显是个从句了,而且这个从句的功能就都是当表语了.所以that从句是作了表语的,并且表语从句用that引导就行.Why放进去,译不...