英语强调句型的构成和用法，以及强调问句的结构

句法强调句型特殊疑问句一般疑问句评论

1. 在肯定句中，强调句型的结构是：It is/was +被强调部分+that 引导的从句(若被强调部分是人也可使用who或whom代替that引导)。
It is on Earth that people can live.
是地球令人们得以生存。
It was my fault that we lost the game.
都是我的错，我们输了这比赛。
It was because her cat died that she kept crying.
是因为她的猫死了，所以他一直哭。
It was Mr. Wang who let me go.
是王老师让我走的。

注意：前述结构只能用于强调句子的主语、宾语或状语，不能强调谓语或定语。强调谓要使用do的适当形式+动词原形。例如：
I do want to go there.
我真的想去那儿。
They did forget to shut the door last night.
他们昨晚确实忘记关门了。
I do be good at football.
我真的长踢足球。

2. 一般疑问句强调句型的结构是：Is/Was it +被强调部分+that 引导的从句(如果被强调部分是人也可用who 或whom 代替that 引导)?
Was it because her cat died that she kept crying?
是因为她的猫死了她一直哭吗？
Is it Tom who broke the window?
是汤姆打坏了窗户吗？

3. 特殊疑问句的强调句结构：被强调成分(由疑问代词/副词充当)+be+it+that引导的从句(如果被强调部分是人也可用who或whom代替that引导)?
Why was it that she kept crying?
她为什么一直哭？
Who was it that broke the window?
是谁打坏了窗户？

注意：It was not until + 时间 + that ……是一个强调句型的固定用，意为“直到……才……”。
It was not until midnight that my dad arrived home.
爸爸直到半夜才到家。
It was not until the teacher came in the classroom that it got quiet.
直到老师走进来，教室才安静下来。