Don’t litter the place around you or it will be a junk yard.

           If……you  litter the place around you, it will be a junk yard.……………………………………………………………………………

Reduce the use of energy or you’ll pay more for it.

            If………you don't reduce the use of energy, you’ll pay more for it.…………………………………………………………………………

Don’t be careless or you will break the vase

           If……you are careless, you will break the vase ………………………………………………………………………………

Stop polluting the air or the effects of climate change will be worse.

          If…you don't stop  polluting the air, the effects of climate change will be worse. …………………………………………………………………………………

câu B đúng nhưng thiếu ' if ' 

b đúng nha

ko câu nào đúng cả

1.......you aren't noisy, you will understand the lesson

2...... you speak slowly, he can understand what you mean

3.......  you aren't careful, you will drop the vase of flowers

1. I would be surprised if Ann came to see us now.

2. If we had enough money,we would go on holiday

3. Unless you do these exercises more carefully, you will fail the exam.

4. If I knew the answer, I could tell you.

5. If she knew French, she could apply for the job

6. Unless she cam here now, we'd come back home

7. Unless you are careful, you will be able to get the job

8. If it rains soon, the tree won't die

* Rewrite the sentences.

1. It is late now; I don't think Ann will come to see us.

-> I would be surprised if __________Ann came to see us________.

2. We don't go on holiday because we don't have enough money.

-> If _________we had enough money, we would go on holiday_________.

3. Do these exercises more carefully or you will fail the exams.

->Unless_________you do these exercises more carefully, you will fail the exams_________.

4. I do not know the answer so I cannot tell you.

-> If _________I knew the answer, I could tell you_________.

5. She can't apply for the job because she doesn't know Frencj.

-> If she knew__________Frencj, she could apply for the job________.

6. If she didn't come here now, we'd come back home.

-> Unless__________she came here now, we'd come back home________.

7. Be careful or you will not be able to get the job.

-> Unless__________you are careful, you won't be able to get the job________.

8. The trees will die unless it rains soon.

-> If_________it doesn't rain soon, the trees will die_________.

1. If you play computer games for too long, you will harm your eyes.

(Nếu bạn chơi trò chơi điện tử quá lâu, bạn sẽ làm hại mắt của mình.)

2. You will get overweight, if you aren't careful with your diet.

(Bạn sẽ bị béo phì nếu không cẩn thận với chế độ ăn của mình.)

3. If it rains, we won't go to the beach.

(Nếu trời mưa, chúng ta sẽ không ra biển.)

4. Unless you hurry up, you will be late.

(Trừ khi bạn nhanh lên, không thì bạn sẽ bị trễ.)

5. If the teacher explains the lesson again, we will understand it very well.

(Nếu giáo viên giảng bài lại một lần nữa, chúng ta sẽ hiểu bài rất tốt.)

1/The woman will helps us and we will make it easily

->If the woman doesn't help us , we won't make it easily

2/ Don't be careless or you will fall over the rocks

->If you are careless , you will fall over the rocks

3/ Burn the trash and the air will be polluted

-> If you don't burn the trash , the air won't be polluted

4/ Hurry up or we'll be late for the meetings

->If we don't hurry up , we will be late for the meetings

5/ Be careful or you will fall over the rock

->If you aren't careful , you will fall over the rock

6/ Mary will buy a bike. She will ride to school

->If Mary doesn't buy a bike , she won't ride to school

1. If the woman helps us, we will make it easily

2. If you are careless, you will fail over the rocks

3. If you burn the trash, the air will be polluted

4. If we don't hurry up, we will be late for the meetings

5. If you are careful, you will not fail over the rock

6. If Mary buys a bike, she will ride to school

1.if we recycle,we'll save natural resouces.

2.if you aren't careful,you'll fall over the rocks.

3.if you work too much,you can feel tired.

4.if you are careless,you'll break the vase.

5.if ha has to work hard,she could pass the exam.

Combine each pair of these sentences, using if:

1. Recycle and we'll save natural resources.

=> If we recycle, we'll save natural resources.

2. Be careful or you will fall over the rocks.

=> If you aren't careful, you will fall over the rocks.

3. Working too much can make you feel tired.

=> If you work too much, you will feel tired.

4. Don't be careless or you will break the vase.

=> If you are careless, you will break the vase.

5. Ha can pass the exam, she has to work hard.

=> If Ha works hard, she will pass the exam.

1. --> If the woman helps us, we will make it easily

2. --> If you are careless, you will fail over the rocks

3. --> If you burn the trash, the air will be polluted

4. --> If we don't hurry up, we will be late for the meetings

5. --> If you are careful, you will not fail over the rock

6. --> If Mary buys a bike, she will ride to school