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Red lime Posted 9 years ago
Grammar

Which sounds more natural?（must, should）

Good day


Which is correct or better?


I can't find my English textbook.

I(must / should)have left it in my classroom.


I saw this sentence in my high school end-of-term exam. My teacher said must is the only answer, but I'm not sure why you can't use should here.

  

Top answer

red lime My teacher said must is the only answer Your teacher is right. I can't find it, so I must have left it in the classroom. ~ I can't find it, therefore by logical deduction, the conclusion is that I left it in the classroom.

— CalifJim

  • red lime My teacher said must is the only answer Your teacher is right.
  • I can't find it, so I must have left it in the classroom.
  • ~ I can't find it, therefore by logical deduction, the conclusion is that I left it in the classroom.
  • red lime I'm not sure why you can't use should here.
  • It doesn't make sense.
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2 Answers
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red limeMy teacher said must is the only answer

Your teacher is right.

I can't find it, so I must have left it in the classroom.
~
I can't find it, therefore by logical deduction, the conclusion is that I left it in the classroom.
red limeI'm not sure why you can't use should here.
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"must" is the only suitable word in this sentence

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