4. "Why don't you ask her yourself?" he said to me.

He suggested me should ask her myself.

Suggest sb (should) V: gợi ý ai nên làm gì

5. I tell the truth, but she doesn't believe me.

Although I tell the truth, she doesn't believe me.

Although: mặc dù

6. I think we should paint these walls blue.

How about painting these walls blue ?

How about + Ving: gợi ý làm gì

7. "Let's invite Hoa and Huong to join our club."

I suggest  inviting Hoa and Huong to join our club.

suggest + Ving: gợi ý làm gì

8. "Why don't you repair the electric fan, Ba?"

She suggested Ba should repair the electric fan.

Suggest sb (should) V: gợi ý ai nên làm gì

9. I think we should speak English in class.

I suggest speaking English in class.

suggest + Ving: gợi ý làm gì

10. Trung was lazy, so he didn't get good grades this semester.

Because Trung was lazy, he didn't get good grades this semester.

Because: bởi vì

`IV.`

1. He ate too much, so he had a stomachache. (BECAUSE)

Because he ate too much, he had a stomachache.

Because: bởi vì

2. Study harder or you'll fail in the next exam. (IF)

If you don't study harder, you'll fail in the next exam.

Câu điều kiện loại 1: S + Vs,es + O, S + will/can/may + V + O

3. I like watching TV. I like listening to music, too. (AND)

-> I like watching TV and listening to music

Hai hoạt động đi cùng nhau và không trái nghĩa nên dùng "and"

4. Let's play a chess. (SUGGESTED)

Nam suggested playing a chess.

suggest + Ving: gợi ý làm gì

5. We are always proud of my dad. He is the best person in the world. (WHO)

We are always proud of my dad, who is the best person in the world.

Đại từ quan hệ "who" thay cho "my dad"

=>
4. He suggested that I should ask her myself.
5. Although I tell the truth, she doesn't believe me.
6. How about painting these walls blue?
7. I suggest inviting Hoa and Huong to join our club.
8. She suggested Ba should repair the electric fan.
9. I suggest speaking English in class.
10. Because Trung was lazy, he didn't get good grades this semester.

IV/
1. Because he ate too much, he had a stomachache.
2. If you don't study harder, you'll fail in the next exam.
3. I like watching TV and listening to music.
4. Nam suggested playing a chess.
5. We are always proud of my dad who is the best person in the world.