强调句式是通过特定语法结构或用词方式强调句子中的某个成分，常见的强调句式包括"It is {被强调的成分} that/who + {句子主干}"，"What/How + {被强调的成分} + {句子主干}"，"{被强调的成分} + do/does/did + {句子主干} + {其它成分}"和"{被强调的成分} + have/has/had + {句子主干} + {其它成分}"。在实际运用中，可以根据需要使用不同的强调句式来凸显不同的信息，让语言更加生动有力。
1. It is {被强调的成分} that/who + {句子主干}
- It is the teacher who taught me English.
- It is my sister who won the first prize in the competition.
- It is knowledge that gives people power.
2. What/How + {被强调的成分} + {句子主干}
- What a beautiful day it is!
- How hard he worked to achieve his goal!
- What a wonderful job you have done!
3. {被强调的成分} + do/does/did + {句子主干} + {其它成分}
- John does like playing basketball.
- I did finish my homework last night.
- She does know how to cook Chinese food.
4. {被强调的成分} + have/has/had + {句子主干} + {其它成分}
- I have never seen such a beautiful sunset.
- She has always been a great friend to me.
- He had never been to Paris before.
