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Viceidol Posted 18 years ago
Grammar

past tense + must have done ?

0She01b00 01font00thought02font02b01font00 02font00that her purse 01b01u01font00must 02font00not have been02u02b00 found by one of the shoppers. (=...01b01font00couldn't02font00 have been02b00 found by...)02br
02br
00May I ask if the above sentence is acceptable? I know that we can probably say "It 01b00mustn't been found02b00 by...", but I'm not sure if we can use "must not" in the above occasion.02br
02br
00Please give me your opinion, thank you!!0-
  

Top answer

0I prefer 01i 00could02i 00 in this negative sentence. 0-

  • 0I prefer 01i 00could02i 00 in this negative sentence.
  • 0-
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1 Answers
0
0I prefer 01i00could02i00 in this negative sentence. 0-

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