She can sings very well.

• Lỗi: "sings" sai thì.
• Sửa: She can sing very well.

He didn’t went to the party last night.

• Lỗi: "went" sai thì quá khứ.
• Sửa: He didn’t go to the party last night.

They are playing soccer since morning.

• Lỗi: Dùng "since" với thì hiện tại tiếp diễn là sai.
• Sửa: They have been playing soccer since morning.

I have been studied English for five years.

• Lỗi: Dùng sai động từ sau "have been".
• Sửa: I have been studying English for five years.

The books is on the table.

• Lỗi: "books" là số nhiều, nên phải dùng "are" thay vì "is".
• Sửa: The books are on the table.

We was very happy to hear the news.

• Lỗi: "was" sai chủ ngữ "we" (phải dùng "were").
• Sửa: We were very happy to hear the news.

My friend enjoys to read books in her free time.

• Lỗi: Sau "enjoys" phải dùng động từ nguyên mẫu (không có "to").
• Sửa: My friend enjoys reading books in her free time.

It’s raining, so I will goes home early.

• Lỗi: "goes" sai thì (phải là "go").
• Sửa: It’s raining, so I will go home early.

He is the best player than I know.

• Lỗi: Dùng "than" không đúng với "the best". Phải dùng "who".
• Sửa: He is the best player who I know.

She is more smarter than her brother.

• Lỗi: "more" không cần thiết với "smarter" vì "smarter" đã là dạng so sánh hơn của "smart".
• Sửa: She is smarter than her brother.