这是一个强调句吗?
问题描述：
这是一个强调句吗?
it could not be the vocabulary that caused you the problem in the exercise because you know a lot of words.这里的it could not be.that 是强调句结构吗?
答
是强调句.非强调句是：
The vocabulary CAN'T / COULDN'T HAVE caused you the problem in the exercise because you know a lot of words.