CONDITIONAL SENTENCES – P.5

This unit helps understand conditional sentences in english grammar using IF 1, IF 2, Unless

Conditional sentence one (If 1)

When we want to say that something is going to happen id a certain condition is fulfilled, we normally use a future simple tense in the main clause and a present tense( simple, continuous or perfect) in the if clause. We do not use a future tense after If. Verbs used in the results part of the sentence are will and shall.

 

Note: When you start with If , there must be a comma used.

 

Example

  1. If I go home, I will wash my stockings.
  2. If daddy buys me a bike, I shall be very happy.
  3. I shall be pleased if you send me a gift.
  4. They will complete their work if they get time.

Complete the following sentences in any way you like.

  1. If I go home early, …………………………..
  2. If you complete your home in time, ………………………..
  3. If we get there on time, we ………………………..
  4. If she sees him today, she …………………………….
  5. if my father comes tomorrow, I ………………………
  6. They will come and see us if, ………………………..
  7. George will pass the examination if …………………….
  8. I will go tomorrow if …………………………….
  9. Musoke will be happy if ………………………….
  10. We shall stop the game if ……………………………………..

 

  1. Use of: Unless

Unless refers to…if…not or except if…..

If you are to use unless at the beginning of a sentence, the following rules are followed:

  1. If you have positive sentences in both the if clause and the main clause and you are told to begin with unless, make the main clause negative.

Examples

(a) If I go to the post office, I will post my letter.

– Unless I go to the post office, I won’t post my letter.

(b) If I see him, I will believe he is an American.

– Unless I see him, I won’t believe he is an American.

  1.  If you have negative sentences in both clauses and you are told to begin with unless,     leave the main clause as it is.

Examples

  • If you don’t practise the language, you won’t learn it.

-Unless you practise the language, you won’t learn it.

(b)If you don’t have enough airtime, you won’t make an international call.

-Unless you have enough airtime, you won’t make an international call.

  1. If you have a positive sentence in the If clause but a negative in the main clause and you are told to begin with unless, make the main clause positive.

Examples .

  • If I have your letter, I will not reply it.

-Unless I receive your letter, I will reply it.

(b) If the army gets the rebels, it will not forgive them.

– Unless the army gets the rebels, it will forgive them.

  1. If you have a negative sentence in the if clause but a positive one in the main clause and you are told to begin with unless, don’t make any other changes in the main clause, and leave it positive.

Examples

  • If you don’t come to my birthday party, I will get annoyed with you.

-Unless you come to my birth day party, I will get annoyed with you.

(b) If Rajab doesn’t stop playing in class, he will fail.

– Unless Rajab stops playing in class, he will fail.

NOTE

A comma is very important in this conditional structure.

 

Examples

  1. if it doesn’t rain, I shall go swimming.

Unless it rains, I shall not go swimming.

  1. If I don’t come early. I shall not enter the classroom.

Unless I come early, I shall not enter the classroom.

Evaluation

Rewrite the given sentences using unless.

  1. If Peter does not pay my money, he will end up in prison.
  2. If it doesn’t rain soon, farmers will not plant crops.
  3. If James does not drive carefully, he will cause an accident.
  4. If those boys don’t wash the car, I won’t give them food.
  5. If Joseph does not come, we shall ring him.
  6. If you don’t see him, he will go away un happy.
  7. If I don’t hear from you, I will not do anything about it.
  8. If I don’t get a first grade, I shall repeat the class.
  9. If Opio and Okia are not late for school, they will be permitted in class.
  10. If we don’t reply to their letter, we shall not be considered good people.

Using: If No 2

We use If(2) when we are imagining what would happen if the impossible came true. In If (2), the condition cannot be fulfilled. It is just day dreaming.

Examples

  1. If I was God, I would leave man to live for ever.
  2. If I were you, I wouldn’t eat posho.

 

Note: In If ( 2) we use would in the result part of the sentence.

Comparison of IF1 and IF2

If1(conditional sentence one)If2(conditional sentence two)
(a) I will buy a new car if I get money.I would buy a new car if I got money.
(b) If you disturb a dog, it will bite you.If you disturbed a dog, it would bite you.
(c) If you work hard, you will pass.If you worked hard, you would pass.
(d) She will be clever if she reads hard.She would be clever if she read hard.

A comma is very important in this structure if the sentence begins with a condition.

Evaluation

Change the following sentences to If ( 2)

  1. If she writes to me, I will be happy.
  2. If she doesn’t come, we shall go to her home.
  3. If my problem is solved, I will grow fat.
  4. If the bank is open, I will draw some money.
  5. If it rains today, mother will sow her beans.
  6. If my brother buys a car, I shall learn to drive.
  7. If I am given enough text books, I shall pass my final exams.
  8. If he misses the train, he will go by bus.
  9. If they come back early, hey will fetch water.
  10. If they don’t have money, they will not have anything to eat.

THIS VIDEO SHOWS THE USE OF CONDITIONAL SENTENCES

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