if四种条件句.pptxVIP

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if四种条件句

ZEROFIRSTSECONDTHIRDIf clauseMain clauseIf + Present simplePresent simpleIf I am late for school, my teacher gets angry.If I oversleep …I miss the bus.If I miss the bus, I am late for school.If I am late for school, my teacher gets angry.If clauseMain clauseIf + Present tensewill / can / may / must + verbIf I go to London, I will see the Big Ben.If I go to London …I will see the Big Ben.If I go to Buckingham Palace, I can take a photo of the Royal Guard.If you go to London, you must look right before crossing a streetIf clauseMain clauseIf + Past Simplewould / could / might + verbIf I were an astronaut, I would travel in a spaceship.If I were an astronaut, I would travel in a spaceship.If I travelled in a spaceship, I would go to Mars.If I went to Mars, I would meet a Martian.Nice to meet you!If I met a Martian, I wouldn’t understand him.?IfI avedIf I didn’t understand him, I would come back to the Earth.If clauseMain clauseIf + Past Perfect tensewould/could/might + have + past participleIf I had studied hard, I would have passed my exams.IIf you had studied hard, you wouldn’t have failed your exam.IIf you had passed your exam, you could have gone to the beach.IIf I had gone to the beach, I would have made sand castles.

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