Zero Conditional

If clause:  If + Present tense    

Main clause:   Present tense

  • If I have time, I usually go to the movies.
  • If they come here, they always bring a present.
  • If we don't go out on Saturdays, we rent a video and stay home.
  • If you freeze water, it turns into ice.
  • If I work too much, I get tired.

First Conditional

If clause:   If + Present tense

Main clause:   will / can / may / must + verb

  • If I have time, I'll visit my parents this afternoon.
  • If it is warm tomorrow, we'll go to the beach.
  • If she doesn't call you, you can call her.
  • If you work hard, you may become a millonaire someday.
  • If they don't want to go out, they can stay home.

Second Conditional

If clause:   If + Past Simple

Main clause:  would / could / might + verb

  • f I won the lottery, I would travel around the world.
  • If we didn't have to work today, we could have a picnic.
  • If you went to Brazil, you wouldn't want to come back.
  • If I didn't want to go, I would tell you.
  • If they worked for that company, they might have better salaries.

Third Conditional

If clause:    If + Past Perfect tense

Main clause:    would/could/might + have + past participle

  • If I had won the lottery, I would have traveled around the world.
  • If we had studied harder, we might have passed the test.
  • If she had explained me the problem, I would have understood it.
  • If my sister had been here, she would have enjoyed this.
  • If they hadn't drunk so much last night, they wouldn't have felt sick today.

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