1, Because he was lazy, he failed the exam.

2, The front yard isn't large enough to play soccer in.

3, You don't need to set off early.

4, I will call Ling if you like ( Câu điều kiện loại 1: If + S +V (hiện tại đơn), S+ will + Vo )

5, I used to have a cat. ( used to + Vo: Đã làm gì đó trong quá khứ)

6, Because it rained heavily, we were late for school.

7, The ladder isn't high enough to reach the window.

8, Do I need to clean the window ? ( Is it neccessary + (for +O) + to Vo ? ⇒ Do/ Does + S +need + to Vo? )

9, It is dangerous to ride a bicycle so fast. ( To Vo / V-ing + be + adj ⇒ It + is + adj + to Vo )

10, My family used to live in Hai Phong when I was small.( used to + Vo: Đã làm gì đó trong quá khứ)

1. Because he was lazy, he failed the exam.

2. The front yard isn't large enough to play soccer in.

3. You don't need to set off early.

4. I will call Linh if you like.

5. I used to have a cat. 

6. Because it rained heavily, we were late for school.

7. The ladder isn't high enough to reach the window.

8. Do I need to clean this table? 

9. It is dangerous to ride a bicycle so fast.

10. My father used to live in Hai Phong when I was small.