题目内容：

有一个句子 It was evening （that）we reached the little town of Winchester.括号里面为什么要用that
如果用when 可以不?

优质解答

It was evening （that）we reached the little town of Winchester这句话应该不能用that,因为如果是强调句,那么去掉it was ..that应该还是一个句子,但这里去掉后就不是句子了,因为少了in the ,应该是in the evening...