Mustn't or Don't Have to?
Quiz Which of the following sentences is incorrect?
- You mustn't smoke in here.
- She doesn't have to come if she wants to stay home.
- They mustn't donate if they prefer not to.
- We really don't have to talk about it.
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Answer
The incorrect sentence is sentence number three:- They mustn't donate if they prefer not to.
Why?
This sentence means to say that the choice is theirs. They can donate if
they wish, and if they don't want to – it's ok too. "Mustn't" turns the sentence into a command, so it's incorrect.
The same sentence
corrected
To correct the sentence, we could say:- They don't have to donate if they prefer not to.
See also:
Synonyms
and AntonymsEnglish Vocabulary Activities
Building Vocabulary and Some Common Mistakes
English Vocabulary Quizzes
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