Loại 1: 

- if we pollute the water, we  will have no fresh water to use

- If you don't ask your mother's permission, don't go out

- If you feel this bag heavy, i will give you a hand

- if we have money, we will buy this car

- if you finish the exercises, you can do the next one

Loại 2:

-If he refused, I would be very happy

- If we lived in a city, we could get access to the Internet easily

- If the weather weren't bad, we would go swimming

- If I were in school, I would be studying now

- If they offered you the job, would you accept?

If I have time, I will watch a movie. ( ĐIỀU KIỆN1)

They would be very sad if they heard that from you.( ĐIỀU KIỆN2)

Dịch:

Nếu tôi có thời gian, tôi sẽ xem một bộ phim.

Họ sẽ rất buồn nếu họ nghe được điều đó từ bạn.

If it rains, we will cancel the trip. = Nếu trời mưa, chúng tôi sẽ hủy chuyến đi.

If she knew that, she would be very surprised.
Nếu cô ấy biết chuyện đó, cô ấy sẽ rất bất ngờ.

If I were you, I wouldn't do that.
Nếu tôi là bạn thì tôi sẽ không làm vậy.