Put the verbs in the correct form.
1. If she .........works...........(work) hard, she ..........will pass...........(pass) the exam.
2. If I………had….….(have) a lot of money now, I……would buy……..(buy) a new car.
3. If I ..........comes........(come) soon, I ..........will phone..........(phone) you.
4. She .......... Will feel.........(feel) sad if you .......  don't give.............(not, give) her a gift.

5. Many people would be out of work if that factory……closed…..(close) down.
6. If Peter .......... Goes............(go) to work late again, he ......... will be........(be) sacked.

7. No one ............... Can know..........(know) the truth if you ........ don't reveal........(not, reveal)

8. If you …………have…..….(have) time, please write to me.
9. What would you do if you……won………(win) a million dollars?
10.If you press this button, the machine ………will stop……..(stop)

EX 2. Put the verbs in brackets into the correct form of conditional sentence type 2.

1. were - would pass 

2. were - wouldn't eat

3. wouldn't increase 

4. would sort - were 

5. polluted - would recover 

6. didn't throw - wouldn't know  

7. didn't dump - would die 

8. would - do - were

9. weren't - would reduce 

10. owned - would build 

Put the verbs in brackets into the correct form of conditional sentence type 2 

1. If I(be) ...were......the qresident, I(pass) ....would pass.....harder regulations for using fertilizers in agriculture 

2. If I(be) .....were.....you, I(not eat) .....wouldn't eat...that genetically modifed poetatoes 

3.If big corporations( care) ...cared......more dbout the environment and less about their own pockets, the pollution from factories( not increase).....wouldn't increase.....so fast 

4. He( sort)....would sort..... his trash if(be)......were....smart

5.If the seas( pollute)....polluted.....,  maybe the population of whrow( recover)....would recover......

6. If I(not throw)....didn't throw.......this can of coke into the bushes, I(not know).......wouldn't know.....that coke is poison for wild animals

7. If the factories( not dunp) ....didn't dump......untreated waste into the ocean, fish( die).....would die...massively

8. What( do) ....would you do.....you if you( be).....were....Preident 

9. If the air(not be) ..weren't........dirty, the breathig problems( reduce)......would reduce.....

10.If I(own)....owned....a lonely, island, I(build).....would build.... a huge house by the beach 

1. If I (be) were the president, I (pass) would pass harder regulations for using fertilizers in agriculture.

2. If I (be) were you, I (not eat) wouldn't eat that genetically modified potatoes.

3. If big corporations (care) cared more about the environment and less about their own pockets, the pollution from factories (not increase) wouldn't increase so fast.

4. He (sort) would sort his trash, if he (be) were smart.

5. If the seas (pollute) polluted , maybe the population of whales (recover) would recover .

6. If I (not throw) didn't throw this can of Coke into the bushes, I (not know) wouldn't know that Coke is poison for wild animals.

7. If the factories (not dump) didn't dump untreated waste into the ocean, fish (die) would die massively.

8. What (do) would you do if you (be) were President.

9. If the air (not be) weren't dirty, the breathing problems (reduce) would reduce .

10. If I (own) owned a lonely island, I (build) would build a huge house by the beach.

1 will give

2 will pass

3 will go

4 will pick

5 will sit

6 will choose

7 take - drink

8 will turn

1. If she works hard, she will pass the exam.

2. If I come soon, I will phone you.

3. She will feel sad if you don't give her a gift.

4. If Peter goes to work late again, he will be sacked.

5. No one will know  the truth if you don't reveal

6. If the boy eats that apple, he will be ill.

7. If you don't hurry, you will miss the bus.

8. Tell him about this story if you see him.

9. If you have a day off where will you go?

10. If he cooks the meal himself, help him.

11. If few people come to the meeting, please postpone to the other day.

12. If it isn't  warm this afternoon, we will put off the game.

13. will Your father  pick you up if you come back late?

14. What will you speak if you meet a foreigner?

15. Unless he answers all my questions, I won't help him

Put the verbs in correct form of conditional sentence type 1:

1.   If he (be) ___is_______ late, we (go) _will go_________ without him.

2.   If she (need) _____needs________ computer, her brother (give) ___will give_______ her his computer.

3.   If we (not/ have) ____don't have____________ time this afternoon, we (meet) __will meet________ tomorrow.

4.   He (talk) ____will talk__________ to her if you (not/ want) ____don't want_____________ to do it.

5.   You (not/ win) _____won't win___________ the game if you (not/ know) __don't know__________________   the rules.

6.   If you (speak) ___speak_______ English, you (get) ____will get_______________ along with them perfectly.

7.   If she (come) _comes_________ to see us, we (go) _____will go____________ to the zoo.

8.   I (take) ____will take_________ the bus home if my father (not/ pick) ___doesn't pick__________________ me up.

9.   If you (not/ ask) ___don't ask__________________, he (not help) __won't help________ you.

10.  I (stay) _____will stay___________ at home if it (not / rain) __doesn't rain___________.

11. If I _____go___________ (go) out tonight, I ___will go_____________ (go) to the cinema.

12. If you _____get___________ (get) back late, I ______will be__________ (be) angry.

13. If we ______don't see__________ (not/see) each other tomorrow, we ____will see____________ (see) each other next week.

14. If he _____comes___________ (come) , I __will be ______________ (be) surprised.

15. If we ___wait_____________ (wait) here, we ____will be____________ (be) late.

1.is-'ll go

FURTHER PRACTICE: CONDITIONAL SENTENCES TYPE 1

I. Give the correct form of the verbs in brackets.

1. If he (do)………DOES……… well in the exam, his parents will buy me an MP3 player.

2. If my sister borrows my clothes again, I (scream)……………WILL SCREAM…………..!

3. We’ll leave at 6 o’clock if the weather (be)…………IS………… bad.

4. They (not mind)………………WON'T MIND………………… if we’re a bit late this afternoon.

5. Sarah will be very annoyed if Dave (not call)…………DOESN'T CALL………. her this evening.

6. WILL You still (go)…………GO…………. to the concert if the tickets cost 60 euros?

7. If Rania doesn’t come to the party, WILL Greg (be)…………BE……… upset?

8. I’ll be surprised if Doug and Dana (not get)…………………DON'T GET……………….. a new car soon.

9. If she (leave)……………LEAVES…………… at five o’clock, she’ll be there by half past seven.

10. We (call) ……………………WILL CALL……………………you if we have any problems.

11. He’ll be late for the train if he (not start)……………DOESN'T START………………. at once.

12. If I lend you $100, when WILL you (repay)…………………REPAY………………… me?

13. Unless I have a quiet room, I (not be able)……………WON'T BE ABLE………….. to do any work.

14. If we leave the car here, it (not be)………………WON'T BE…………….. in anybody’s way.

15. Someone (steal)…………………WILL STEAL……………… your car if you leave it unlocked.

16. Unless he (work)……………WORKS………… harder, he will be fired.

17. If you come late, they (not let)……………WON'T LET…………… you in.

18. If you (not go) ………DON'T GO……………away, I’ll call the police.

19. If he (eat) …………EATS……………..all that, he will be ill.

20. What (happen) …………WILL HAPPEN…………….if my parachute does not open?

II. Find and correct the mistake.

1. I get rid of my old car if you don’t need it.

get -> will get

2. You won’t be able to use grammar correctly unless you don’t understand it.

unless -> if

3. Nobody will like you if you won’t change your behaviour.

won't -> don't

4. If I’ll order the new TV set tomorrow, we’ll get it on Monday.

I'll -> I

5. Anna doesn’t come to the party if you don’t invite her.

doesn't -> won't

6. Jack won’t go to dance unless Marry will ask him.

will ask -> asks

7. If you will need my help, I will be in my office until 4:00.

will need -> need

8. If you finish your dinner, you are allowed to watch TV.

are -> will be

9. If we will go shopping tomorrow, I’ll probably buy a new dress.

will go -> go

10. If mum is tired tonight, I cook dinner.

cook -> will cook

11. John will tell us if there will be any news.

will be -> is

12. If I won’t get a good mark in the geography test, I’ll be very annoyed!

won't -> don't

13. You are tired in the morning if you don’t go to bed soon.

are -> will be

14. If you see Karen, do you ask her to call me?

do -> will

15. Does Frank come with us if we go to the beach at the weekend?

Does -> Will

16. If you need help, will tell me!

will tell -> tell

17. If we goes on holiday this summer, we’ll go to France.

goes -> go

18. We won’t have a picnic if the weather didn’t improve.

FURTHER PRACTICE: CONDITIONAL SENTENCES TYPE 1

I. Give the correct form of the verbs in brackets.

1. If he (do)………does……… well in the exam, his parents will buy me an MP3 player.

2. If my sister borrows my clothes again, I (scream)……………will scream…………..!

3. We’ll leave at 6 o’clock if the weather (be)…………is………… bad.

4. They (not mind)………………won't mind………………… if we’re a bit late this afternoon.

5. Sarah will be very annoyed if Dave (not call)…………doesn't call………. her this evening.

6.  Will You still (go)…………go…………. to the concert if the tickets cost 60 euros?

7. If Rania doesn’t come to the party, will Greg (be)…………be……… upset?

8. I’ll be surprised if Doug and Dana (not get)…………………don't get……………….. a new car soon.

9. If she (leave)……………leaves…………… at five o’clock, she’ll be there by half past seven.

10. We (call) …………………will call………………………you if we have any problems.

11. He’ll be late for the train if he (not start)…………………doesn't start…………. at once.

12. If I lend you $100, when will you (repay)…………………repay………………… me?

13. Unless I have a quiet room, I (not be able)……………won't be able………….. to do any work.

14. If we leave the car here, it (not be)…………won't be………………….. in anybody’s way.

15. Someone (steal)……………will steal…………………… your car if you leave it unlocked.

16. Unless he (work)…………works…………… harder, he will be fired.

17. If you come late, they (not let)……………won't let…………… you in.

18. If you (not go) …………don't go…………away, I’ll call the police.

19. If he (eat) …………eats……………..all that, he will be ill.

20. What (happen) …………will happen…………….if my parachute does not open?

II. Find and correct the mistake.

1. I get rid of my old car if you don’t need it.

get -> will get

2. You won’t be able to use grammar correctly unless you don’t understand it.

don't -> bỏ / unless -> if

3. Nobody will like you if you won’t change your behaviour.

won't -> don't

4. If I’ll order the new TV set tomorrow, we’ll get it on Monday.

I'll -> I

5. Anna doesn’t come to the party if you don’t invite her.

doesn't -> won't

6. Jack won’t go to dance unless Marry will ask him.

will ask -> asks

7. If you will need my help, I will be in my office until 4:00.

will -> bỏ

8. If you finish your dinner, you are allowed to watch TV.

are -> will be

9. If we will go shopping tomorrow, I’ll probably buy a new dress.

will go -> go

10. If mum is tired tonight, I cook dinner.

cook > will cook

11. John will tell us if there will be any news.

will be -> is

12. If I won’t get a good mark in the geography test, I’ll be very annoyed!

won't get -> get

13. You are tired in the morning if you don’t go to bed soon.

are -> will be

14. If you see Karen, do you ask her to call me?

do -> will

15. Does Frank come with us if we go to the beach at the weekend?

Does -> will

16. If you need help, will tell me!

will tell -> tell

17. If we goes on holiday this summer, we’ll go to France.

goes -> go

18. We won’t have a picnic if the weather didn’t improve.

didn't -> doesn't

18. We won’t have a picnic if the weather didn’t -> doesn't improve.

III. Choose IF or UNLESS to complete the following sentences.

1. UNLESS my teacher helps me, I’ll be unable to do it.

2. IF I meet his father, I’ll tell him the whole truth.

3. You won’t get well UNLESS you stop eating junk food.

4. UNLESS you exercise regularly, you won’t be able to lose some weight.

5. IF you exercise regularly, you’ll lose some weight.

6. The teacher will be mad IF you don’t do the homework.

7. You can’t go on vacation IF you don’t save your money.

8. You will feel cold UNLESS you wear a jacket.

9. They’ll arrive on time IF they hurry.

10. Don’t call me late UNLESS it’s an emergency.

IV. Rewrite the following sentences.

1. If you don’t study harder, you’ll fail the next exam.

=> Unless you study harder, you'll fail the next exam

2. If he doesn’t practice writing every day, he can’t improve his writing skill.

=> Unless he practices writing every day, he can’t improve his writing skill

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

=> If this man isn't  a driver, he can’t help you move by car

4. Unless you go out more often, you might fall ill.

=> If you don't go out more often, you might fall ill

5. If you don’t return this book to the library today, you’ll have to pay a fine.

=> Unless you return this book to the library today, you’ll have to pay a fine 

6. If you don’t practice harder, you will lose in the next game.

=> Unless you practice harder, you will lose in the next game

7. If Nam doesn’t speak English every day, he will easily forget how to use it.

=> Unless Nam speaks English every day, he will easily forget how to use it.

8. Unless our team had joined the competition, we would not have achieved this prize.

=> If our team had not joined the competition, we would not have achieved this prize

9. If students don’t return books to the library this week, they’ll have to pay a fine.

=> Unless students return books to the library this week, they’ll have to pay a fine

10. If Peter doesn’t study hard, he will get low marks.

=> Unless Peter studies hard, he will get low marks

11. This movie was so boring, so he didn’t watch it.

=> Because this movie was so boring, he didn’t watch it

12. I haven’t seen Mai for 4 years.

=> I last saw Mai 4 years ago

13. Bao was ill yesterday. He did all his homework.

=> Although Bao was ill yesterday,he did all his homework

14. Nowhere is more comfortable than my home.

=> My home is the most comfortable place

15. I started teaching English three years ago.

=> I have taught English for three years

16. Walk faster or you will miss the bus.

=> If you ​don't walk faster, you will miss the bus

17.  I won’t enjoy the film if you aren’t with me.

=> Unless you are with me, I won't enjoy the film

18. You must leave home early or you will miss the flight.

=> If you don't leave home early, you will miss the flight

19. John will pass the driving exam if he isn’t nervous.

=> Unless John is nervous, he will pass the driving exam

20. They will go on holiday if they have time.

=> Unless they don't have time, they will go on holiday

21. You have to get up early or you will be late for school.

 => If you don't get up early, you will be late for school

22. He will take a taxi if it rains.

=> Unless it rains, he will not take a taxi

1.There  boy (run).............is running............................in the street at the moment.

2.Water (boil).................boils.........................at 100 degree C.

3.If she (work) hard,she (pass).............will pass................the final exam.

4.Did you like going(swim)...................swimming.........................last summer?

5.Are you able (write)..................to write.......................letters in English?

6.Look! It (rain)...............is raining....................heavily outside.

7.She spends an hour (do)...............doing...........................her homework everyday.

8.It (often be)....................is often....................hot in summer.

17. If Mai doesn’t work hard, she (not fail) _______won't fail___________ the exam.

18. We (not meet)  __________haven't met______ her since we lived here.

19. I don’ know many English words. I wish I (know) ___knew______more English words.

20. Tuan and Huong  (not/go) ______did not go_______ to the cinema last night.

21. My brother used to ( go ) _____go_________ to work by motorbike. Now he cycles

24.  My father suggested that I _____should not borrow____ (not borrow) money from friends.