II. Đặt câu điều kiện, sử dụng if hoặc if. 1. Tôi không thể hoàn thành nhiệm vụ này nếu bạn không giúp tôi một tay. 2. Bạn sẽ hết tiền nếu bạn không ngừng lãng phí nó. 3. Đừng gọi cho tôi trừ khi đó là trường hợp khẩn cấp. 4. James sẽ không vượt qua bài kiểm tra trừ khi anh ấy học chăm chỉ hơn. 5. Nếu Jane hoàn thành công việc của mình trước 6 giờ tối, cô ấy sẽ đi ăn tối với bạn bè của mình. 1. Làm việc chăm chỉ và bạn sẽ vượt qua kỳ thi của mình. Nếu 2. Anh trai tôi chơi tennis không giỏi. Anh trai tôi thì không. 3. Tôi sẽ đi nghỉ vào tuần tới, vì vậy tôi sẽ không thể tham dự cuộc họp. Kể từ 4. Nếu bạn không bắt đầu làm việc chăm chỉ ngay bây giờ, bạn sẽ không thể vượt qua bài kiểm tra cuối cùng. Trừ phi . 5. Nên sớm có người đem rác này đến bãi rác. Thùng rác này 1. Tôi là thành viên của chương trình chống ô nhiễm ở trường tôi. Tôi thường đi học bằng xe buýt. (như vậy) 2. Cây cối trong khu vực này đã được làm sạch. Các cơ sở công cộng sẽ được xây dựng. (bởi vì) 3. Tất cả các con đường đều bị ngập vì trời mưa rất to. (do) ​​4. Jimmy đã ăn rất nhiều thức ăn nhanh, vì vậy anh ấy đã tăng 10kilogram chỉ trong vòng hai tháng. (bởi vì) 5. Cha tôi đã bực tức vì tôi đã liên tục bật đèn mà tôi không sử dụng. (Vì thế)

câu thì làm r câu thì chưa :v Mình nhìn trên đó hình như thiếu 1cái đề bài

1. If we miss the bus,we will take the taxi

Unless we  miss the bus,we will not take the taxi

2.I will give you a lift if you don't have a bicycle

Unless you have a bicycle, I will give you a lift 

3.Unless he wins the money,he won't have enough money to pay his bills

If he doesn't win the money,he won't have enough money to pay his bills

11 i didn't eat lunch , i feel hungry now

=>if i had eaten lunch, I wouldn't have been hungry now

12 it hadn't rained , we would have a better crop

=>but for the rain, we would have a better crop

13 i only come if they invite me

=> unless they invite, I won't come

13 he didn't revise all his lessons , he failed the exam

=>if he had rivised all his lessons, he wouldn't have failed the exam

14 his sister sent her money , so he continued to study

=>but for his sister's money, he wouldn't have contrinued to study

15 the park is over there , only 5 minutes walk

=>if you walk for 5 minutes, you will find the park

16 in case it rain , we'll stay at home

=> if it rains, we'll stay at home

17 let me give you my advice . you should cut down on smoking right now

=> if i were you, I would cut down on smoking right now

18leave me alone or i'll call the police

=>unless you leave me alone, I won't call the police

19 if you arrive at the office earlier than i do , please turn on the air -conditioner

=> should you arrive at the office earlier than I do, please turn on the air-conditioner

\20 the children don't go to school in the snowy weather

=>if it doesn't snow, the children will go to school

21` he died so young otherwise , he would be a famous musician by now

=> had it not been for his dead, he would have been a famous musician by now

22 you must tell me the whole truth or i won't help you

=> unless you tell me the whole truth, I will help you

23 the car breaks down so often because you don't take good care of it

=> were i take good care of it, the car wouldn't break down so often

Nếu không hiểu câu nào thì bình luận ngay ở đây để mình giải thích chi tiết nhé.

11, If I had eaten lunch , I would feel hungry now

12, But for rain , we would have a better crop

13,  Unless they invite me, I won’t come

13,  If he had revised all his lessons, he wouldn’t have failed the exam

14, But for his sister’s money, he wouldn’t have continued to study

15, If you walk to the park, it will take you 5 minutes

16, If it rains, we’ll stay at home

17, If I were you, I would cut down on smoking right now 

18, Unless you lave me alone , I'll call the police 

19, Should you arrive at the ofice earlier than I do, please turn on the air-conditioner

20, If it snows , the children won't go to school 

21, Had he not died so young , he would have been a famous musician by now 

22, Unless you tell me the whole truth , I won't help you

23, Were I you , I would take good care of it

bài có 2 câu 13 nhé bạn !

1/ We won't go out unless it stops raining 
--> We won't go out if it doesn't stop raining 
2/ I will call the police unless you give back my bicycle 
--> I will call the police if you don't give back my bicycle 
3/ You wouldn't be able to do this exercise unless your English were good 
--> You wouldn't be able to do this exercise if your English were not good 
4/ Unless we had enough rain, we couldn't grow rice 
--> If we didn't have enough rain, we couldn't grow rice 
5/ The fishermen couldn't have caught a lot of fish unless they had had good nets 
--> The fishermen couldn't have caught a lot of fish if they hadn't had good nets 
6/ I wouln't buy it unless I could afford it 
--> I wouln't buy it if I couldn't afford it 
7/ I would refuse to go unless they paid my expenses 
--> I would refuse to go if they didn't pay my expenses 
8/ I don't agree with his economic policy. I wouldn't vote for him unless he changed it 
--> I don't agree with his economic policy. I wouldn't vote for him if he didn't change it 
9/ He wouldn't have written unless he had heard news 
--> He wouldn't have written if he hadn't heard news 
10/ You might not have a terrible toothache unless you went to the dentist regularly 
Câu này phải bỏ "not" thì mới đúng nghĩa. 
You might have a terrible toothache unless you went to the dentist regularly 
--> You might have a terrible toothache if you didn't go to the dentist regularly 

Chúc you hok tốt nhé 

1/ We won't go out unless it stops raining 
--> We won't go out if it doesn't stop raining 
2/ I will call the police unless you give back my bicycle 
--> I will call the police if you don't give back my bicycle 
3/ You wouldn't be able to do this exercise unless your English were good 
--> You wouldn't be able to do this exercise if your English were not good 
4/ Unless we had enough rain, we couldn't grow rice 
--> If we didn't have enough rain, we couldn't grow rice 
5/ The fishermen couldn't have caught a lot of fish unless they had had good nets 
--> The fishermen couldn't have caught a lot of fish if they hadn't had good nets 
6/ I wouln't buy it unless I could afford it 
--> I wouln't buy it if I couldn't afford it 
7/ I would refuse to go unless they paid my expenses 
--> I would refuse to go if they didn't pay my expenses 
8/ I don't agree with his economic policy. I wouldn't vote for him unless he changed it 
--> I don't agree with his economic policy. I wouldn't vote for him if he didn't change it 
9/ He wouldn't have written unless he had heard news 
--> He wouldn't have written if he hadn't heard news 
10/ You might not have a terrible toothache unless you went to the dentist regularly 
--> You might not have a terrible toothache if you go to the dentist regularly 

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless he hurry, he will be late for school
2. unless it stops raining, we won't go out
-> if it doesn't stop raining, we won't go out
3. you will get success if you are patient
- unless you aren't patient,you will get success
4. those flowers will die if nobody waters them
- unless nobody doesn't water them,those flowers will die
5. no one can help him if he doesn't tell the truth
- unless he tell the truth,no one can help him
6. you will catch a cold unless you keep your feet dry
- if you don't keep your feet dry,you won't catch a cold
7. if i don't catch the plane, i will not be home by five
- unless i catch the plane, i will not be home by five
8. if you don't apologize, i will never speak to you again
-unless you apologize, i will never speak to you again
9. unless he gives me his number, i won't phone him
- if he doesn't give me his number, i won't phone him
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless he learn his lessons carefully,he can do that exercise

TYPE 2
1. unless the studied harder, he would fail the final exam
- if the didn't study harder, he would fail the final exam
2. unless the drank alcohol, he would pass the contest
- if the didn't drink alcohol, he would pass the contest
3. unless he phoned immediately, he wouldn't meet Mary
-if he didn't phone immediately, he wouldn't meet Mary
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless we didn't have a calculator, we couldn't work his more quickly
5. if i weren't weak, i could walk
- unless i were weak, i could walk
6. if you weren't slow now, you could uiwn the race
- unless you were slow now, you could uiwn the race
7. if you didn't speak very quickly, the students could hear you well
- unless you spoke very quickly, the students could hear you well
8. if tom didn't invite me, i wouldn't go to the party
- unless tom invited me, i wouldn't go to the party
9. if they didn;t know his number now, they wouldn't give it to me
- unless they knew his number now, they wouldn't give it to me
10. unless he were careful, he would have serious accident
- if he weren't careful, he would have serious accident

TYPE3
1. if he hadn;t been too lazy, he wouldn't have failed the exam
- unless he had been too lazy, he wouldn't have failed the exam
2. unless yesterday had been a nice day, we wouldn;t have gone camping
-if yesterday hadn't been a nice day, we wouldn;t have gone camping
3. if you hadn't driven carefully, you would have had a serious accident
- unless you had driven carefully, you would have had a serious accident
4. if the bus hadn't been crowded, he wouldn't have walked to the office
-unless the bus had been crowded, he wouldn't have walked to the office
5. unless you had studied hard, you wouldn't have walked to the office
- if you hadn't studied hard, you wouldn't have walked to the office
6. unless you had helped me, i wouldn't have finished our homework
- if you hadn't helped me, i wouldn't have finished our homework
7. unless the meeting were so long they wouldn't feel tired
- if the meeting weren't so long they wouldn't feel tired
8. if he weren't too lazy, he would pass the exam
- unless he were too lazy, he would pass the exam

1. If it isn't sunny, we can't go for a picnic .

Unless it is sunny, we can't go for a picnic.

2. If Mai doesn't listen care fully, she can't in stall the machine 

Unless Mai listen care fully, she can't in stall the machine.

3. If they don't go out now, they will be punished .

Unless they go out now, they will be punished.

4. Unless he does the test carefulyy , he can't get good marks .

If he doesn't do the test carefulyy , he can't get good marks.

5. Unless they try their best, they won't pass the exam .

If they don't try their best, they won't pass the exam.

eeeee

1. If it isn't sunny, we can't go for a picnic .

Unless .....it is sunny , we can't go for a picnic...........................................

2. If Mai doesn't listen care fully, she can't in stall the machine 

Unless ....Mai listens carefully , she can't install the machine........................................

3. If they don't go out now, they will be punished .

Unless ........they go out now , they will be punished........................................................

4. Unless he does the test carefulyy , he can't get good marks .

If ...........he doesn't do the test carefully , he can't get good marks.........................

5. Unless they try their best, they won't pass the exam .

If .....they don't try their best , they won't pass the exam ........................................ 

I. Rewrite the sentences，beginning as shown：

1. They don't have enough time so they cannot do me a favour.

If they had enough time, they could do me a favour.

2.I can't send you a postcard if you don't give me your address.

Unless you give me your address, I can't send you a postcard.

3. He lost his savings because he wasn't careful.

If he had been careful, he wouldn't have lost his savings.

4. If he were not so lazy，he would be more successful.

Were he not to be so lazy, he would be more successful.

5. If you had finished your work，you would have been awarded

Had you finished your work, you would have been awarded.

6. Bill never does anything unless you tell him what to do.

If you don't tell Bill what to do, he never does anything.

1. If I (have)_______had_____a typewriter, I could type it myself

2.You could make much progress if you (attend)_____attended_________class regularly

3.If I ( know)_______knew______his telephone number, I would give it to you.

4.If you are kind to me, I (be)__am____ goog to you

5.He (come)______would come____ if you waited

6.If he (study)_______studies_____harder, he can pass an exam.

7.She may be late if she ( not hurry)___doesn't hurry_______

8.What (you/do)_______would you do_____ if you got fat?

9.If you (ring)______rang_____the bell, the servant would come.

10.If it (not,rain)_______didn't rain_______ a lot, the rice crop wouldn't grow.

11.If today (be)_____were______Sunday, we wouldn't have to work.

12.We lost the match. If you (play)____played____ for us, we (win)____would won______.

13.They would not be paid unless they (do)____didn't do_____ their work well.

14.If I became very rich, I (build)_____would build_______a hospital for the poor.

15.If he (give)______gives____ up smoking, as his doctor orders, he will be soon well again.

16.You would have to stay in bed unless your health (improve)___________improved____________.

17.If I (have)______had____ a typewriter, I could type it my self.

18. You could make much progress if you (attend)_____attended______ class regularly.

19.If I (know)______knew______his telephone number, I would give it to you

20. If he (study)_____studies______harder, he can pass an exam