It was to him that I told the news.
原句为I told the news to him.
It is (was) 被强调部分+ that (who) + 句子其他部分.
例如：
原句为：We get light and heat from the sun.
强调the sun：It is from the sun that we get light and heat.
强调light and heat:It is light and heat that we get from the sun.
记住这个例子就行了.