在英语学习过程中，单句改错是一项非常重要的技能。它不仅能够帮助我们发现和纠正语法错误，还能提高我们的语言敏感度和表达准确性。下面是一些精选的单句改错练习题，让我们一起来挑战吧！

1. 原句：She don't like to eat vegetables.

改正：She doesn't like to eat vegetables.

2. 原句：I have been to Paris last year.

改正：I went to Paris last year.（或 I have been to Paris.）

3. 原句：He is more taller than his brother.

改正：He is taller than his brother.

4. 原句：The book which I borrowed from the library was very interesting.

改正：无需修改。

5. 原句：We was having dinner when they arrived.

改正：We were having dinner when they arrived.

6. 原句：There is too much people in the room.

改正：There are too many people in the room.

7. 原句：If it will rain tomorrow, we will stay at home.

改正：If it rains tomorrow, we will stay at home.

8. 原句：She asked me that where I came from.

改正：She asked me where I came from.

9. 原句：This is the most interesting movie what I have ever seen.

改正：This is the most interesting movie that I have ever seen.

10. 原句：He didn't finished his homework yesterday.

改正：He didn't finish his homework yesterday.

通过这些练习，我们可以更好地掌握英语中的各种语法规则。希望同学们能够在日常学习中多加练习，不断提高自己的英语水平！