一、It is/was...that/who强调句
基本结构：It is/was + 被强调部分 + that/who + 句子其余部分
原句：Tom broke the window yesterday.
强调主语：It is Tom that/who broke the window yesterday.
强调宾语：It is the window that Tom broke yesterday.
强调时间：It was yesterday that Tom broke the window.
二、强调句的判断方法
去掉It is/was和that/who，剩余部分仍能组成完整句子。
三、not...until的强调句
原句：I didn't realize it until he told me.
强调：It was not until he told me that I realized it.
四、do/does/did强调谓语
Do be careful!（千万要小心！）
He does speak English well.（他英语说得确实好。）
I did tell him about it.（我确实告诉过他这件事。）
五、其他强调方式
- 倒装句强调
- 反身代词强调：I myself did it.
- on earth/in the world强调疑问词