Các lỗi sai:

1. 1. Gốc: "We spent the night to talk in my living room while he played the music he had chosen and explained his ideas." Sửa: "We spent the night talking in my living room while he played the music he had chosen and explained his ideas."

2. Gốc: "He read his book so he was waiting for the bus." Sửa: "He read his book while he was waiting for the bus."

3. Gốc: "We were lying on the beach sunbathing as they was playing volleyball." Sửa: "We were lying on the beach sunbathing as they were playing volleyball."

4. Gốc: "I really like her because I know that she has already had a boyfriend." Sửa: 

   Ý nghĩa của câu này không rõ ràng và có thể không chính xác tùy theo mục đích. 
   Nếu có ý bày tỏ việc thích ai đó bất kể tình trạng mối quan hệ của họ như thế nào: 
   "I really like her even though I know she already has a boyfriend."
   

5. Gốc: "Either the speed nor the design of this car appeals to me." Sửa: "Neither the speed nor the design of this car appeals to me."

6. Gốc: "So the child is hungry, he will never eat broccoli." Sửa: "Even though the child is hungry, he will never eat broccoli."

7. Gốc: "It is important to vote when the time will come, or you won't get a say in new laws." Sửa: "It is important to vote when the time comes, or you won't get a say in new laws."

8. Gốc: "He was playing soccer when she was reading the newspaper." Sửa: 

   Câu này đúng ngữ pháp, không cần thay đổi gì cả.

9. Gốc: "Matt wants to ask either his father but his brother about the equation." Sửa: "Matt wants to ask either his father or his brother about the equation."

10. Gốc: "My parents wanted me to pick up some milk and I didn't have enough money." Sửa: 

    Câu này đúng về mặt ngữ pháp, mặc dù nó có thể rõ ràng hơn nếu bổ sung thêm ngữ cảnh:

    "My parents wanted me to pick up some milk, but I didn't have enough money."