1、首先我们来看一道题目：It was last night______I saw the ghost.
A. the time
B. that
C. which
D. when
2、我们先来了解强调句的类型
N1 陈述句型的强调句
结构：
It is+被强调+that/who+其他
例句：
It was yersterday that he told the girl he loves her
3、N2 一般疑问句式的强调句
结构：
将is/was 提到前面，其他和上面结构相同
例句：
Was it yersterday that he told the girl he loves her?
4、N3 特殊疑问句的强调句型？
结构：
被强调部分+is+it+that/who+其他
例句：
Where was it that you told your girl friend you love her?
5、强调句子中可以只强调某一部分
比如，下面是正常的一句话
I met Peggy at the school yersterday.
只强调主语的话
It was I that met Peggy at the school yesterday.
6、上面的句子，如果只强调宾语，则变成
It was Peggy that I met at the school yersterday.
