Needn’t, don’t need to, didn’t need to, needn’t have

Needn’t, don’t need to, didn’t need to, needn’t have

Exercise 3

Complete the sentences using the verb in brackets with a suitable form of ‘need’.

EXAMPLE: We didn’t need to call the vet because the dog recovered. (call)

Please wait...

1We . We've got plenty of time. (hurry)

2We a table. The restaurant was completely empty. (book)

3We a babysitter because my sister offered to stay with the kids. (call)

4You my suitcase for me. It's not that heavy. (carry)

5You me dinner. I would have been fine with a sandwich. (cook)

6I for anything while I was there. All our meals were provided. (pay)

7Children over the age of 4 a car seat. (use)

8You any dinner for me. I had a huge lunch. (make)

9We the plumber because Gary managed to fix the tap himself. (call)

10You a new pen. You can borrow one of mine. (buy)

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Needn’t, don’t need to, didn’t need to, needn’t have

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We use the expressions needn’t, don’t need to, didn’t need to, and needn’t have to express an absence of necessity. Although each of these forms has its own function and construction, they are easily confused because they all come from the same verb.

Need can act either as a normal verb (don’t need to do) or as a modal verb (needn’t do, needn’t have done).

Absence of necessity in the present

We can use needn’t + infinitive or don’t need to + infinitive to talk about the absence of necessity. The form needn’t is more common in formal language and in British English and is normally used to give someone permission NOT to do something. It is also common to use don’t need to to say the same thing.

• You needn’t mop the floor. I’ve already done it.
• You don’t need to mop the floor. I’ve already done it.

However, to talk about a general absence of necessity (in general, not on one specific occasion), we normally use don’t need to rather than needn’t.

• People don’t need to get a degree to find a good job.
• People needn’t get a degree to find a good job.

Absence of necessity in the past

Although they both express an absence of necessity in the past, didn’t need to and needn’t have can have very different meanings.

When referring to an action that happened in the past that was unnecessary, it is more common in British English to use needn’t have. Needn’t have is followed by the main verb in its past participle form. Using didn’t need to in this way is also OK.

• You needn’t have brought dessert. (This form is more common in the UK.)
• You didn’t need to bring dessert.

However, when referring to an action that didn’t happen in the past, we can only use didn’t need to. Didn’t need to is always followed by an infinitive.

• He started to feel better, so I didn’t need to call the doctor.
• He started to feel better, so I needn’t have called the doctor.

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