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The four conditional sentences are:
• Zero conditional sentences express general truths or known facts.

• First conditional sentences express possible future events or actions that are likely to happen.
• Second conditional sentences express unlikely or unrealistic future events.

• Third conditional sentences express hypothetical past outcomes or consequences.

Here are some examples of each type.
• Zero Conditional Sentences (truths and facts)

Examples : If you freeze water, it turns to ice.

It gets dark outside when the sun sets.
When the sun rises, it is day.

• First Conditional Sentences (possible or real condition)
Examples : If it rains, I will stay home.

If you do not water the plants, they will shrivel up and die.
If you exercise every day, you will be fit.

[In place of will, can and may are also used.]

• Second Conditional Sentences (impossible or unreal condition)

Examples : If I won the lottery, I would travel around the world.
(Chances of winning a lottery are extremely unlikely, so travelling is impossible)

If he worked hard, he would pass.

(He does not work hard, so passing is impossible.)

• Third Conditional Sentences (unfulfilled past)

Examples : If you had asked me, I would have helped you.
(You did not ask me, so I did not help you.)

If you had been careful, you would not have lost your wallet.
(You were not careful, so you lost your wallet.)

1. Now identify the type of conditional sentence.
1. If you mix green and yellow, you get blue. (_____________________________)

2. If I had attended the interview, I would have got the job. (_____________________________)

3. If we had gone early, we would have got tickets. (_____________________________)

4. If you drop the cup, it will break. (_____________________________)

5. If she ate less, she would lose weight. (_____________________________)

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