1. If you don't have a passport, you can't enter that country

2. If you study hard, you will pass this entrance

3. If you don't ride your bike carefully, you will cause an accident

4. Unless You don't train harder, You will break her past record

5. If you save electricity, you won't pay much per month

6. If you don't try your best, you won't be successful

7. If we work hard, we will be successful

8. Tom was interested in that book

9. The girl felt interested in the show

10. Mai was a fast swimmer

11. Mrs. Quyen types carefully

12. As the weather was bad, the flight had to be delayed 

13. Because we were tired, We fell asleep in front of the TV

14. All the students love the principal because of his kindness

15. Because of not eating anything for breakfast, he felt hungry

16. Robert is a wonderful dancer

You cant enter that country without a passport

-> If you don't have apassport, you can't enter that country.

Study hard and you will pass this entrance examination

->if you study hard, you will pass this entrance examination.

Ride your bike carefully or you will cause accident

-> if you don't ride your bike carefully, you will cause accident.

You dont train harder. You dont break her past record

-> Unless you train harder, you don't break her past record.

Save electricity, or you will pay much per month

-> if you don't save electricity, you will pay much per month.

Dont hope to be successful without trying your best

-> if you don't try your best, you won't hope to be successful.

Hard work leads us to success

-> if we work hard, we will success.

Tom found that book interesting

-> Tom was interested in that book.

The show was interesting to the girls

-> The girls felt interested in that shop.

Mai swam very fast

-> Mai was fast swimmer.

Mrs. Quyen is a careful typist

-> Mrs. Quyen types carefully.

The flight had to be delayed bacause of the bad weather

-> As a result of the bad weather, The flight had to be delayed.

We fell asleep in front of the TV because of our tiredness

-> Because we were tired, we fell asleep in front of the TV.

All the students love the principal because he is very kind

-> All the students love the principal because of his kindness.

Nam hasn't eaten anything for breakfast, so he felt hungry

->Because of not eating breakfast, he felt hungry.

Rober dances very wonderfully -> Robert is a wonderful dancer.