Conditionals NCERT Solutions | English Grammar (Communicative) Interact In English Class 10 PDF Download

B.2 Follow the patterns discussed in B1 and write sentences using the ideas in the table below. You will need to match the items first

example: I'll go for a walk if the weather is fine.

Answer:
1. I shall write a letter if we don't have enough of work.
2. We shall go to cinema, if you get the tickets.
3. I'll go shopping tomorrow, if I earn enough money today.
4. You'll pass exams if you do not go out.

B. 3 Complete the following conditional sentences using the clues given.

1. I'll take you out in the evening if ......................
 (let/ do/ work/ now - persuasion)

Ans. I'll take you out in the evening if  you let me do my work now.

2. If you travel without reservation, ............
 (be/ ask/ to get off the train-warning)

Ans. If you travel without reservation, you will be asked to get off the train.

3. If you insult my brother again, .....................
 (complain/ to/ the principal - threat)

Ans. If you insult my brother again, I'll complain to the principal.

4. If the rain continues to be heavy, ....................... 
 (school sports day/ be/ cancel- possibility)

Ans.  If the rain continues to be heavy, school sports day may be cancelled.

5. If he exercises regularly .................................
 (lose weight -ability)

Ans. If he exercises regularly, he can lose weight.

6. If your claims are in order, ......................... (get a refund -possibility)
 Ans. If your claims are in order, you may get a refund.

7. If you've completed your project, .................................. (leave at once- permission)
 Ans. If you've completed your project, you can leave.

8. .........................................., if you want me to give you good marks.
 (improve/ handwriting -command)
 Ans. Improve your handwriting, if you want me to give you good marks.

9. If you meet my sister, ____________________________? (you/ ask/ her/ call/ me- request)
 Ans.  If you meet my sister, will you ask her to call me.
OR  
If you meet my sister, please ask her to call me.

C. The 'Unreal' or 'Hypothetical' Conditional.

C.1 Read the imaginary situations given below and complete the sentence that describes the situation in each case. One has been done for you as an example.

Answer:

C.2 Complete the sentences below in the same pattern as in the example, choosing the words from the box.

1. If I were ____________
 Ans. If I were the Principal of my school, I would allow students come in casuals.

2. If I were _________
 Ans. If I were the God, there would be less tearful world.

3. If I were ____________
 Ans.  If I were the Environment Minister, I would take strict action against those who destroy wildlife.

4. If I were ____________
 Ans.  If I were tall, I would be the best basketball player in the school.

5. If I were ____________
 Ans. If I were hardworking, I would score better in the examination.

D. The Impossible Conditional

D.2 Basic Form

If + past perfect
would + have + past participle

If they had brought the man to the hospital immediately after the accident, his life would have been saved.

Construct sentences in the above pattern using the clues given:

1. We wasted time. We missed the train.
Ans. If we hadn't wasted time, we would not have missed the train.

2. He did not take the advice of his accountants. He lost a lot of money.
Ans. If he had taken the advice of his accountants, he would not have lost a lot of money.

3. There was an accident on the way. I did not reach the office in time.
Ans.   If there had not been an accident on the way, I would have reached the office in time.

D.4 Read the clues below and say what the company should have done/ should not have done in order to produce a more successful car.

Some years ago, a three-wheeled electric car was launched by Hindustan Electric Company. Although it was a revolutionary vehicle, it was a commercial disaster. The Company did very little research, but believed the product would be successful. The car did not have a very powerful engine, so it was not very fast. As a result it did not appeal to adults. However, even though it was small and slow, the car was not suitable for children either. It did not appear to be safe to use on the road because it was so small. It was also very expensive. The Company had to stop production, after losing millions of rupees.

Because so many things were wrong with the car, it was impossible for the company to sell it successfully. The company should have been more careful.

Read the clues below and say what the company should have done/ should not have done in order to produce a more successful car.

1. (carry out) (proper market research) (realise) (success) 
Ans.  If the company had carried out proper market research, it would have realised the car would not be a success.

2. (powerful) (fast)
Ans.  If the car engine had been powerful, it would have moved fast.

3. (expensive) (suitable)
Ans.  If  it hadn't been expensive, it would have been suitable for children.

4. (size) (safety)
Ans.  If it had been larger in size, it would been safer.

D.5 Ashok had a terrible day yesterday. Look at the chain of events that happened to him.

Now he is lying in bed thinking of what might have happened if……………

Use the type of sentence you used in the last exercise to write down his thoughts. Start like this:

"If the alarm had gone off, I wouldn't have got up late. If I hadn?'t  got up late, I wouldn't have been caught in traffic jam. If I hadn't been caught in traffic jam, I would have reached office on time. If I had reached office on time, the boss would not have scolded me. If I hadn't  shouted at my boss, I wouldn't have lost my job."

E. Zero Conditional Sentences to Express a General Truth.

E.1 In pairs, complete the sentences below as shown in the example:

1. If you do not regularly oil the moving parts of a bicycle, ________
Ans. 1. If you do not regularly oil the moving parts of a bicycle, they jam.

2. ___________________when you leave the kettle for too long.
Ans. The tea spoils, when you leave the kettle for too long. 

3. When the tectonic plates of the earth's crust move, ___________
Ans. When the tectonic plates of the earth's crust move, there occurs an earthquake.

4. ______________if you press the FF> button on a cassette player.
Ans. The tape moves forward, if you press the FF> button on a cassette player.

5. If a plant does not get enough sunlight, _____________
Ans. If a plant does not get enough sunlight, it does not grow properly.

F. Conditionals without 'IF’

Tick the correct option from the words in italics. Think carefully.

1. We will go to Changu Lake on Saturday provided that/ unless the weather is fine.
 Ans. We will go to Changu Lake on Saturday  unless the weather is fine.

2. Unless/ As long as the shop gives a good discount we will place our order with them.
 Ans.  As long as the shop gives a good discount we will place our order with them.

3. Unless/ If we look into his complaints the situation is going to get worse.
 Ans.   If we look into his complaints the situation is going to get worse.

4. Provided that/ Unless you avoid the bandits, they will kill you.
 Ans.  Unless you avoid the bandits, they will kill you. 

5. Unless/ As long as peace is what all governments want, we should all learn the art of peace-making.
 Ans.  As long as peace is what all governments want, we should all learn the art of peace-making.

Make similar sentences using the clues given below. Do not use if.

1. children - receive love (develop)
2. people    - eat well, exercise (healthy)
3. examination - on time (waste a year)
4. movie - short, interesting (hit)
5. journal - useful, attractive (popular)

Answer:
1. As long as children receive love, they develop stronger.
2. Unless people do not eat well, exercise alone will not make them healthy.
3. Providing examination are not being conducted on time, it will waste a year.
4. Unless the movie is short and interesting, it will not be a hit.
5. Provided that journal is not useful and attractive, it will not become popular. 

G. Conditionals - Summary

Match the phrases from columns A and B to form meaningful sentences. Rewrite them in the space provided below. The first one has been done for you.

Answer:
1.  If I save enough money, I may go to America this summer.
2.  I will come over to your place, provided that I have finished my homework.
3.  As long as you pay, you can be a member of the club.
4.  If you need money, let me know
5.  I’ll miss my flight, unless I get up early tomorrow.
6.  If I were rich, I would run a charity home.
7.  I shall be selected for the Olympics, provided I win this race.
8.  I wouldn’t have gone for a swim, if you had warned me about the pollution.
9.  If you put salt in water, it dissolves.
10.  You would probably have passed the exam, if you had worked harder.