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Match the sentence beginnings and ends. (A)
1 You mustn’t drink alcohol a to enjoy it.
2 You mustn’t keep medicines b when you go into a pub.
3 You don’t have to be a member с if teachers object to the new curriculum.
4 You don’t have to play golf well d to run up and down the aisle of the aircraft.
5 Newspapers mustn’t e to use the tennis club.
6 You don’t have to drink alcohol f when you drive.
7 Newspapers don’t have to say g who provided their information.
8 Children mustn’t be allowed h where children can get them.
9 You mustn’t be surprised i mislead the public.
24.2 Underline the more likely answer. If they are equally likely, underline them both. (C)
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Mustn’t and needn’t / don’t have to
We use mustn’t to say that something is NOT ALLOWED and needn’t (or don’t need to) or don’t
have to to say that something is NOT NECESSARY:
• You mustn’t walk on the grass here.
• You mustn’t put anything on the shelves until the glue has set hard.
• They proved that watching a chess match needn’t be boring.
• We needn’t go into details now, but we seem to agree on the general principles.
D Need, needn’t, and don’t need to / don’t have to
Need can be used as a modal verb (before a bare infinitive) or as an ordinary verb. Compare:
a • You needn’t speak so loudly. (= modal verb)
• • She needn’t come with us if she doesn’t want to. (= modal verb)
• She’s thirsty. She needs a drink. (= ordinary verb)
• Jim and Bob are here. They say they need to see you urgently. (= ordinary verb)
When it is a modal verb need is most commonly used in negative sentences, although it is
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