34 .... don't stop swimming in that lake, you will have skin rashes.

35 ...... having entered the restaurant, they were served

36 ..... pollution occurs, which makes us unable to see the stars in the sky

1. I can’t finish this task. You don’t give me a hand.

-> Unless you give me a hand, I can't finish this task.

2. You will run out of money if you don’t stop wasting it.

-> Unless you stop wasting money, you will run out of it.

3. Don’t call me unless it is an emergency.

-> Don't call me if it isn't an emergency.

4. James will not pass the test unless he studies harder.

-> If James doesn't study harder, he won't pass the test.

5. If Jane finishes her work before 6 pm, she will dine out with her friends.

-> Unless Jane finishes her work before 6 pm, she won't dine out with her friends.

6. My brother won’t go travelling this summer if he doesn’t find a companion.

-> My brother won't go travelling this summer unless he finds a companion.

7. It is not easy to do these exercises unless you listen attentively to the teacher.

-> It is not easy to do these exercises if you don't listen attentively to the teacher.

8. If Jim doesn’t submit his essay before Tuesday, he will be punished by the teacher.

-> Unless Jim submit his essay before Tuesday, he will be punished by the teacher.

...you don’t stop swimming in that lake, you will have skin rashes

The residents of the street cannot sleep because of the loud noise from the music club

The tsunami made many people in this area become homeless

Many plants and trees died since the acid rain happened last month

Because factories produce waste and pour it into rivers and lakes, many rivers and lakes are contaminated

Because Linh lives in the area affected by air pollution, she has breathing problem

The typhon came after they had repaired their house

2. Stop swimming in that lake, or you will have skin rashes. (If)

____If you don't stop swimming in that lake, you will have skin rashes.___

3. The noise from the music club is loud. The residents of the street cannot sleep. (because of) à___Because of the loud noise from the music club,the residents of the street cannot sleep.__________________________________________________________________________

4. The Tsunami happened. Many people in this area became homeless. (made)

The Tsunami happened, which made many people in this area become homeless

5. The acid rain happened last month. Many plants and trees died. (Since)

Since the acid rain happened last month, many plants and trees have died

6. Many rivers and lakes are contaminated. Factories produce waste and pour it into rivers and lakes. (because)

Because factories produce waste and pour it into rivers and lakes, many rivers and lakes are contaminated.

8. They repaired their house, then the typhoon came. (After)

After they had repaired their house, the typhoon came

1. Fred wouldn’t do that if he didn’t have your permission.

   Unless............Fred had your permission, he wouldn't do that ........................................................................... .

2. If you don’t leave immediately, I will call a policeman.

   Unless ..........you leave immediately, I will call a policeman. ................................................................................ .

3. We won’t have a holiday because we don’t have enough money.

   If we...........have enough money, we will have a holiday ................................................................................ .

4. I don’t know the answer, so I can’t tell you.

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

5. If you didn’t agree with him, Charrles wouldn’t even suggest it.

    Unless .......you agreed with him, Charrles wouldn’t even suggest it............................................................................... .

6. If you study harder, you are going to pass the exam.

    Unless ......you study harder, you aren't going to pass the exam. ............................................................................... .

7. I wouldn’t have believed it if I hadn’t seen it with my own eyes.

    Unless.........I had seen it with my own eyes, I would have believed it........................................................................ .

8. Go to bed early or you will be tired the next morning.

    If you ......don't go to bed early, you will be tired the next morning................................................................................... .

9. Without the map, we would  have got lost.

    If it .....hadn't been for the map, we would  have got lost. ....................................................................................... .

10. We couldn’t go for a picnic because it rained heavily.

    If ............it hadn't rained heavily, we could have gone for a picnic ................................................................................... .

11. Jim works very hard. He has no time to spend with his family.

     If ...........Jim didn't work hard, he would have time to spend with his family. .................................................................................... .

12. We didn’t bring enough money with us, so we couldn’t buy the car.

     If...........we had brought enough money with us,we could have bought the car......................................................................................... .

13. Take an umbrella or you will be wet..

      If …………you don't take an umbrella, you will be wet..………………………………………………….. .

1. Fred wouldn’t do that if he didn’t have your permission.

   Unless he had your permission,Fred wouldn’t do that

2. If you don’t leave immediately, I will call a policeman.

   Unless you leafes immediately, I will call a policeman.

3. We won’t have a holiday because we don’t have enough money.

   If we had enough money,we would have a holiday 

4. I don’t know the answer, so I can’t tell you.

   If I knew the answer, I could tell you.

5. If you didn’t agree with him, Charrles wouldn’t even suggest it.

    Unless you agreed with him, Charrles wouldn’t even suggest it.

6. If you study harder, you are going to pass the exam.

    Unless you study harder,you won't pass the exam

7. I wouldn’t have believed it if I hadn’t seen it with my own eyes.

    Unless I had seen it with my own eyes, I wouldn’t have believed 

8. Go to bed early or you will be tired the next morning.

    If you go to bed early , you won't be tired the next morning.

9. Without the map, we would  have got lost.

    If it had had the map, we wouldn't  have got lost. 

Rewrite these sentences with conditional sentence type 1

1.Unless you write your lessons, you will not understand.

If you don't write your lessons, you will not understand.

2. Unless you close the door, you will get a cold.

If you don't close the door, you will get a cold.

3. If she isn't thirsty, she will not stop.

Unless she is thirsty, she will not stop.

4. Unless there is a car, he can't get there in time.

If there isn't a car, he can't get there in time.

5. Unless they buy that house, they will have nowhere to live.

If they don't buy that house, they will have nowhere to live.

6. If he learns hard, he should be rewarded.

Should he learn hard, he will be rewarded.

Rewrite these sentences with conditional sentence type 1

1.Unless you write your lessons, you will not understand.

=> If you .................................don't write your lessons, you will not understand..............................................

2. Unless you close the door, you will get a cold.

=> If you ................................don't close the door, you will get a cold.............................................

3. If she isn't thirsty, she will not stop.

=> Unless .................................she is thirsty, she will not stop............................................

4. Unless there is a car, he can't get there in time.

=> If there ................................isn't a car, he can't get there in time..........................................

5. Unless they buy that house, they will have nowhere to live.

=> If ......................................they don't buy that house, they will have nowhere to live..............................................

6. If he learns hard, he should be rewarded.

=> Should .................................he learn hard, he will be rewarded......................................

Chúc bạn học tốt!

1. You won't get in to see the show, unless you have reserved seats.

2. You should start early, otherwise; you will get stuck in the traffic.

3. It was 2 months since my family last went to Huong pagoda festival.

4. Susan went to the gym 3 times a week in order to be fit for the skiing.

Choose the best answer for each of the fllowing sentences
1. ............ if you work harder, you will be sacked.
A. Whether B. If C. However D. Unless

2. I think you should stop smoking.
A. If I am you, I will stop smoking B. If I were you, I will stop smoking
C. If I were you, I would stop smoking D. If I had been you, I would stop smoking

3. If you take the ice out of the fridge, it ...........
A. vaporizes B. melts C. heats D. disappears

4. We should do something to protect water from being polluted ........... we will have nothing to drink in the future.
A. if B. whether C. or D. unless

5. Let's knock on their door to see .......... home.
A. if they're B. unless they're C. whether they were D. if they were

6. Unless we .......... more snow, we can't go skiing.
A. will have B. have C. have had D. had

7. You'll fail the exam ........... you start revising.
A. if B. until C. when D. unless

8. Unless you wash the car, you .............. not drive it at the weekend
A. would B. could C. have to D. may

9. If Peter ............... his car before the drive, he ................ the problem of out of petrol.
A. cheked / will not get B. had checked / would not have got
C. checks / will not have got D. would be checking / will not have got

10. He stepped on the mine, and it exploded.
A. If he doesn't step on the mine, it doesn't explode.
B. If he doesn't step on the mine, it won't explode.
C. If he didn't step on the mine, it wouldn't explode.
D. If he hadn't step on the mine, it wouldn't have exploded.

5. Unless you rest yourself, you really will be ill.

1. Unless you study harder, you 'll get bad marks.

2. If this man is not a driver, he can’t help you move by car.

3. Unless he practices writing every day, he can't improve his writing skill.

6. Unless you are absent from school, you will not write a sick-note.

Rewrite the following sentences that keep the same meaning.(If=>Unless)

5. If you don’t rest yourself you really will be ill.

=> Unless ……………  you rest yourself, you really will be ill………………..……………………

1.If you don't study harder, you 'll get bad marks.

=> Unless ........................  you study harder, you 'll get bad marks. ..................................................

2.Unless this man is a driver, he can’t help you move by car.

=>If................................................  this man is not a driver, he can’t help you move by car..................................................................................

3. If he doesn't practice writing every day, he can't improve his writing skill.

=> Unless ...................... you are absent from school, you will not write a sick-note.....................................................

6. If you are absent from school, you have to write a sick-note.

 Unless you are absent from school, you don't have to write a sick-note.

II.Rewrite the following sentences, using the conditional sentences, type 1 and 2

1. The soil is poinoned because farmers use too many pesticifes and herbicides. (If)

=>If farmers didn't use too many pesticides and herbicides,the soil wouldn't poisoned.

2. Many people have stomachache due to the contaminate food. (If)

=>If the food wasn't contaminated , many people hadn't stomachache.

3. Stop swimming in that lake, or you will have skin rashes. (If)

=>If you stop swimming in that lake , you won't have skin rashes .

4. Lan lives in the area affected by air pollution, so she has breathing problem. (If)

=>If Lan doesn't live in the area affected by air pollution,she won't have breathing problem.

1,If famers didn't use too many pesticifes and herbicides, the soil wouldn't poinoned

2,If the food wasn't contaminate, many people hadn't stomachache

3,If you stop swimming in the lake,you won't have skin rashes

4,If Lan didn't live in the area affected by air pollution, she wouldn't have breathing problem