1. If you don’t leave the office, I will call the police. (or)
→ ………Leave the office or I will call the police  ………………………………..…………………………………………….…………………………………

2. If he doesn’t sweep the floor, he won’t be played soccer. (Unless)
→ ………Unless he sweep the floor, he won’t be played soccer ………………………………..…………………………………………….…………………………………

3. If I didn’t say sorry, I wouldn’t be here. (otherwise)
→ ………I say sorry, otherwise I wouldn’t be here ………………………………..…………………………………………….…………………………………

4. You can’t visit Paris unless you get a visa. (If)
→ …………If you don't get a visa, you can’t visit Paris ……………………………..…………………………………………….…………………………………

5. If it weren’t for the view, this would be a lovely room. (But for)

→ ……But for the view,this would be a lovely room …………………………………..…………………………………………….…………………………………

1.-> If they had left the house early, they wouldn't have late for the play.
2.->If it stops raining, we will go out.
3.->If you had kept your feet dry, you wouldn't have caught cold.

1. They didn’t leave the house early so they were late for the play.

-> If they ………had left the house early, they wouldn't have been late for the play……………………………………………

2. Unless it stops raining, we won’t go out.

-> If it ……doesn't stops raining, we won't go out…………………………………………….

3. You caught cold because you didn’t keep your feet dry.

-> If you …had kept your feet dry, you wouldn't have caught cold…………………………………………………………..

4. Review the lesson carefully; otherwise you can’t do the test well.

->  Unless you……revise  the lesson carefully, you can’t do the test well.………………………………………………

5. “If you happen to see the man, you may give this book to him.” He said to the girl.

-> He said to the girl ……if she happened to see the man, she might give that book to him………………………………………………

6.  “I wouldn’t have been upset if she had written to me earlier,” the man said.

-> The man said …he wouldn't be upset if she had written  to him earlier…………………………………………………

7.  “The boss would complain if we didn’t report it to him.” David said to his colleagues.

-> David said …the boss would complain if they didn't report to him…………………………………………………

8.  “Mum would be cross if you went on doing like this,” the girl said to her younger brother.

-> The girl said …to her younger brother Mum would be cross if he went on doing like that…………………………………………………

Finish each of the following sentences so that its meaning stays the same.

66. Unless it rains, they go for a picnic tomorrow.

=> If it ___rains, they won't go for a picnic tomorrow______________________________________________.

67. If Hoa doesn’t invite us, we won’t come to the party.

=>Unless___Hoa invites us, we won’t come to the party. ____________________________________________.

68. I had a big lunch but I still felt hungry.

=> Although_____I had a big lunch, I still felt hungry._______________________________________.

69. My father started working as a teacher in 2011.

=> My father has____worked as a teacher since 2011._____________________________________.

70. Mark likes playing basketball best.

=> Basketball is_____best at playing basketball_____________________________________.

IX. Make correct sentences from the words and phrases given.

71. You/ not/ play/ more/ computer games/ free time.

You shouldn't play more computer games in your free time.

72. Doctor/ asking/ Mai/ questions/ about/ health problems.

The doctor is asking Mai  questions about her health problems

73. Vitamins/ play/ important/ role/ our diet.

Vitamins play an important role in our diet

74. We/ keep/ our bodies/ warm/ avoid/ flu/ a cold.

We keep out bodies warm to avoid having flu and a cold

75. Getting/ enough/ rest/ help/ you/ concentrate/ school.

Getting enough rest helps you concentrate at school

X. Use the given words to write the complete sentences.

76. Your homework/ be/ easy/ than/ my homework.

______Your homework is easier than my homework_______________________________________________________.

77. No/ other singer/ our country/ be/ popular/ than/ her.

______No other singer in our country is more popular than her_______________________________________________________.

78. Ha Long/ be/ most beautiful/ bay/ Vietnam.

______Ha Long is the most beautiful bay in VN_______________________________________________________.

79. They/ watch television/ living room/ now.

_______They are watching television in the living room now______________________________________________________.

80. Look/ Hoa/ play soccer/ friends/ her class.

_______Look! Hoa is playing soccer with her friends in her class______________________________________________________.

1. They didn’t leave the house early so they were late for the play.

-> If they ………had left the house early, they wouldn't have been late for the play……………………………………………

2. Unless it stops raining, we won’t go out.

-> If it ……doesn't stops raining, we won't go out…………………………………………….

3. You caught cold because you didn’t keep your feet dry.

-> If you …had kept your feet dry, you wouldn't have caught cold…………………………………………………………..

4. Review the lesson carefully; otherwise you can’t do the test well.

->  Unless you……revise  the lesson carefully, you can’t do the test well.………………………………………………

5. “If you happen to see the man, you may give this book to him.” He said to the girl.

-> He said to the girl ……if she happened to see the man, she might give that book to him………………………………………………

6.  “I wouldn’t have been upset if she had written to me earlier,” the man said.

-> The man said …he wouldn't be upset if she had written  to him earlier…………………………………………………

7.  “The boss would complain if we didn’t report it to him.” David said to his colleagues.

-> David said …the boss would complain if they didn't report to him…………………………………………………

8.  “Mum would be cross if you went on doing like this,” the girl said to her younger brother.

-> The girl said …to her younger brother Mum would be cross if he went on doing like that…………………………………………………

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

Chọn câu trả lời đúng cho mỗi câu sau.

1. My dog ___ bark unless it is hungry.

​A. don’t​B. won’t

2. Unless you ___ to go to bed early, we should go out.

​A. wants​B. want

3. ___ you don’t slow down, we are going to crash!

​A. If​B. Unless

4. You cannot go into bars ___ you are over 18.

​A. If​B. unless

5. In my country, ____ you cannot speak English, it’s hard to get a good job.

​A. if​B. unless

6. She’ll fail the exam if she ___ study.

​A. if​B. doesn’t

7. We’ll be late ____ we leave soon.

​A. if​B. unless

8. ___ I am not feeling better tomorrow I will go to the doctor’s.

​A. Unless​B. If

9. ____ you do not make the payment in time, your car will be confiscated.

​A. If​B. Unless

10. You will lose your job ___ you change your attitude and become friendlier.

​A. unless​B. If

11. She won’t know the truth ___ you tell it to her.

​A. unless​B. if

12. ____ you arrive early, you’ll be able to meet the customers before the meeting.

​A. Unless​B. If

13. ____ she eats healthy food, she won’t lose some weight.

​A. Unless​B. If

14. They won’t arrive on time ___ they finish the work early.

​A. unless​B. if

15. Will she able to eat some cake ___ I put eggs in it?

​A. unless​B. if

1. Shall we have dinner together tonight? (ABOUT)
=> How ____about having dinner together___________________________________ tonight?
2. If you don’t lend us some money, we won’t be able to go to the theatre. (UNLESS)
=> we won’t be able to go to the theatre _unless you lend us____________________________________some money.
3. June doesn’t staying up late and Terry doesn’t, either. (NOR)
=> Neither ___June nỏ Terry_____________________________________staying up late.
4. I was surprised when I discovered the truth (FIND)
=> I was surprised ___when I found out________________________________the truth was.
5. They say the ice in Antarca is getting thinner all the time. (SAID)
=> The ice in Antarca ______is said to be _________________________________ getting thinner all the time.

1. How about having dinner together tonight?
2. Unless you lend us some money, we won't be able to go to the theatre.
3. Neither June nor Terry likes staying up late.
4. I was surprised when I found out the truth.
5. The ice in Antarctica is said to be getting thinner all the time.

Use UNLESS INSTEAD of IF:

1. if you are not careful, you will cut yourself with that knife.

- Unless you are careful, you will cut yourself with that knife.

2. If you do not like this one, I'll bring you another.

-Unless you like this one, I'll bring you another.

3. She'll be late if she does not hurry.

-Unless she hurries, she will be late.

4. If you don't sneeze, he won't know that we are there.

-]Unless you sneeze, he won't know that we are there.

5. Turn down the gas or the rice will burn.

-Unless you turn down the gas, the rice will burn.