强调句式：It is +被强调部分+that/who+其它部分.e.g.
It was he who didn't finish his homework last night.
It is every night that he watches TV.
倒装句：是主语和谓语颠倒位置.
Here is Tom.
强调句式：It is +被强调部分+that/who+其它部分.e.g.
It was he who didn't finish his homework last night.
It is every night that he watches TV.
倒装句：是主语和谓语颠倒位置.
Here is Tom.