在学习英语的过程中，我们常常会遇到一些容易混淆的知识点和常见的语法错误。为了帮助大家更好地掌握英语，以下整理了30道常见的英语改错题，供同学们练习和巩固。

1. She don't like apples.

改正：She doesn't like apples.

2. I am taller then him.

改正：I am taller than he (is).

3. He have three sisters.

改正：He has three sisters.

4. We was at the park yesterday.

改正：We were at the park yesterday.

5. This is the most interesting book I ever read.

改正：This is the most interesting book I have ever read.

6. The teacher asked me to finish my homework quick.

改正：The teacher asked me to finish my homework quickly.

7. They will arrive in Beijing last week.

改正：They arrived in Beijing last week.

8. I haven't seen her since five years ago.

改正：I haven't seen her for five years.

9. If I would have known, I would have come.

改正：If I had known, I would have come.

10. She didn't know where she can find the book.

改正：She didn't know where she could find the book.

11. He is more smarter than his brother.

改正：He is smarter than his brother.

12. The car which I borrowed yesterday broke down.

改正：The car that I borrowed yesterday broke down.

13. She is very much interested in painting.

改正：She is very interested in painting.

14. My father bought a new house last month and decorated it.

改正：My father bought a new house and decorated it last month.

15. I think he is the best player in our team.

改正：I think he is the best player on our team.

16. He is so tired that he can hardly walk.

改正：He is so tired that he can hardly walk.

17. I have lived here since I am a child.

改正：I have lived here since I was a child.

18. The train leaves at 9:00 and arrives at 10:00.

改正：The train leaves at 9:00 and arrives at 10:00.

19. She is going to buy some fruits.

改正：She is going to buy some fruit.

20. He is one of the students who are late.

改正：He is one of the students who is late.

21. I saw him enter the room.

改正：I saw him enter the room.

22. She enjoys to read novels.

改正：She enjoys reading novels.

23. The meeting will be held in two weeks time.

改正：The meeting will be held in two weeks' time.

24. She has been working hard for the exam.

改正：She has been working hard for the exam.

25. I can't remember when I last saw her.

改正：I can't remember when I last saw her.

26. He is as tall as his father.

改正：He is as tall as his father.

27. I hope you enjoy your stay here.

改正：I hope you enjoy your stay here.

28. She is a good singer and dancer.

改正：She is both a good singer and a good dancer.

29. The book is worth to read.

改正：The book is worth reading.

30. He is very interested in learning English.

改正：He is very interested in learning English.

通过这些改错题的练习，我们可以发现许多英语学习中的常见问题。希望大家能够认真对待这些问题，并通过不断的练习提高自己的英语水平。记住，细节决定成败，尤其是在语言学习中。