好的，这里有一些关于 **How** 和 **What** 在感叹句中使用的例题，涵盖了常见的规则和易错点。
**规则回顾：**
* **What + (a/an) + 形容词 + 名词**
* **How + 形容词/副词 + （主谓）**
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**例题：** 请选择正确的选项填空。
1. ______ lovely day! Let's go for a walk.
A. How
B. What
C. What a
D. How a
2. ______ fast he runs! He could be a professional athlete.
A. How
B. What
C. What a
D. How a
3. ______ delicious the soup is! Did you make it yourself?
A. How
B. What
C. What a
D. How a
4. ______ important information this is! We must act now.
A. How
B. What
C. What an
D. How an
5. ______ beautiful flowers! Where did you buy them?
A. How
B. What
C. What a
D. How a
6. ______ time flies! It seems like only yesterday we were in high school.
A. How
B. What
C. What a
D. How a
7. ______ amazing performance it was! The audience cheered for ten minutes.
A. How
B. What
C. What an
D. How an
8. ______ silly I am! I left my keys inside the car.
A. How
B. What
C. What a
D. How a
9. ______ terrible weather we're having! It's been raining for a week.
A. How
B. What
C. What a
D. How a
10. ______ kind person your brother is! He always helps others.
A. How
B. What
C. What a
D. How a
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**答案与解析：**
1. **C. What a**
* 解析：中心词是单数可数名词 "day"，其结构是 "a lovely day"，所以用 "What a"。
2. **A. How**
* 解析：中心词是副词 "fast"，修饰动词 "runs"。形容词/副词前用 "How"。
3. **A. How**
* 解析：中心词是形容词 "delicious"，后面是 "the soup is"（主谓）。形容词前用 "How"。
4. **B. What**
* 解析：中心词是不可数名词 "information"，其结构是 "important information"，没有冠词，所以用 "What"。
5. **B. What**
* 解析：中心词是复数名词 "flowers"，其结构是 "beautiful flowers"，所以用 "What"。
6. **A. How**
* 解析：这是一个固定句型 "How time flies!"（光阴似箭）。中心词是动词 "flies"，用 "How" 来修饰。
7. **C. What an**
* 解析：中心词是单数可数名词 "performance"，其结构是 "an amazing performance"，所以用 "What an"。
8. **A. How**
* 解析：中心词是形容词 "silly"，后面是 "I am"（主谓）。形容词前用 "How"。
9. **B. What**
* 解析：中心词是不可数名词 "weather"，其结构是 "terrible weather"，所以用 "What"。
10. **C. What a**
* 解析：中心词是单数可数名词 "person"，其结构是 "a kind person"，所以用 "What a"。