强调句型用于对句子中的某部分进行强调，其句式为: it + 动词be + 强调部分 + 从句。其中的从句可由 that, who(m), which 引导。that 可替代人或物。 who/whom 只能代替人，which 只能代替物。另外, 强调状语时由 that 引导。
It was John that helped me yesterday. 昨天是约翰帮了我。
But here it's my word that counts. 但是在这里是我说了算。
It is Peter who broke the window. 是彼得打破窗户的。
It was she who had been wrong. 是她错了。
It was me that she helped yesterday. 昨天她帮助的人是我。
It was him that I saw in the park yesterday. 昨天我在公园里见到的是他。
It was Tom whom the teacher praised yesterday. 老师昨天表扬的是汤姆。
It was him that I gave the pen to. 我把笔给的是他。
It was Peter with whom I first came in contact. 我最初接触的是彼得。
It is this room that I am living in。我住的是这间房。
It was in this street that the car accident happened yesterday. 昨天发生车祸就在这条街。
It was last night that he kissed her for the first time. 他是昨天晚上才第一次亲她。
It was on Monday that all this happened. 是在星期一发生了这一切。
It is only when you have your own children that you realize the troubles of your parents. 当你有了自己的孩子，才能真切地了解到双亲的辛苦。
It was after his father died that he decided to learn medicine. 是在他父亲死后他才决定学医的。
It was because I was new that he distrusted me. 因为我是新来的，他便不信任我。
a) 一般疑问句的强调句型为: Is (was) it that…?
Was it ten years ago that his father died? 他的父亲是十年前去世的吗？
Was it you who lost a watch yesterday？是你昨天丢了手表吗?
b) 特殊疑问句的强调句型为: 特殊疑问词 + is (was) it that…?
When is it that we will set off? 我们到底什么时候出发？
How long ago is it that you last saw her? 你上一次看见她是多久以前的事?
Why is it that you give it up? 为什么你放弃了？
Where was it that you were born? 你是在哪儿出生的?
6.“not…until…”句型的强调结构为“It is(was) not until…that…”
陈述句：I didn't know the news until yesterday. 直到昨天我才知道那个消息。
强调句：It was not until yesterday that I knew the news. (就是)直到昨天我才知道那个消息。
7. 强调句也可以采用否定， 如：
It's not just study that's difficult. 不单单学习才是难的。
It wasn't for myself that I did all this. 我做这一切并非都是为我自己。