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Md. Kamrul Haque (Masum)Headmaster

Komorgram High ShoolMobile No. 01739714050

Email- headmasum1@gmail.com

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INTRODUCING WITH TEACHER

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Class: Ten

By the end of the lesson, you will have learnt what a conditional sentence is.learnt classifications of conditional sentences.learnt the rules of conditional sentences.learnt the uses of conditional sentences.

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Objectives

Read the following sentences:If you walk slowly, you will miss the train.If he reads attentively, he will pass the exam.I shall help you if you need. He will buy a car if he wins a lottery.

Above sentences are conditional sentences. This condition is introduced by “If”.

So, we can say that the sentence which express condition is called a conditional sentence.

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what is called a conditional sentence?

Conditional sentences are of three classes.They are:- (a) 1st Conditional or Probable Conditional. (b) 2nd Conditional or Improbable Conditional. (c) 3rd Conditional or Impossible Conditional.

Besides these according to containing “if” Conditional sentences are of two classes:

(a) Open Conditional [The sentence containing “if”].

(b) Closed Conditional [The sentence except “if”].6

Classification of Conditional sentences

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Rules (Structures) & Examples of Conditional Sentences

[ If clause ] [ Subordinate clause] If+Present tense ,(+) Sub +shall/will/may/can+V1.

Example: (a) If Taherul comes, I shall help him.

(b) If Matin reads attentively, he may secure GPA-5.

[ If clause ] [ Subordinate clause] If+ Past indefinite, (+)Sub+ should/would/might/could +V1.Example: (a) If Mahbub passed the exam, he might get a prize. (b)If Sabina walked slowly, she would miss the train. [ If clause ] [ Subordinate clause] If+ Past perfect, (+)Sub+ should/would/might/could +have+V3. Example: (a) If Polash had bought a ticket, he might have a motorcycle. (b) If Laila had come earlier, she could have finished her works earlier.

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When the sentence starts with “If clause” a comma (,) is used after the clause.

But a comma (,) is not needed when the sentence starts with main clause.

Examples: If you run in the sun, you may become sick. (comma is used) You may become sick if you run in the sun. (comma is not

used) If Alomgir rises early, he will be healthy. (comma is used) Alomgir will be healthy if he rises early. (comma is not used) If you need, Tarique will help you. (comma is used) Tarique will help you if you need. (comma is not used)

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When we use comma in Conditional Sentences

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b

Now discuss the rules and structures in pairs and match the following sentences

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Class Works

1. If you read regularly2. You could catch the

bus3. If you want to go

abroad4. I shall go5. If you want to meet

Krishna

a. If you come todayb. You should go to her

school.c. You can pass well.d. If you rane. You must have a visa.

Complete the sentences:a)If Parvin came late, she-----b)If you give me a red pen, I shall----c)----- -----, you will get a prize.d)If I were a king, ------------.e)---------- he would buy a car.f)If Shakhawat runs in the sun------g)-----------------, he will not miss the train.h)If Mina gets a flower,------------.i) If Ataur gets one million taka, he-----------.j) If she needs any cosmetics, she ------------. 10

Home Work

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Thank You Everybody