Grammar: have to – don't have to / need – needn't 4. Read the sentences. Which shows that something is/isn't necessary? You have to pay the rent on time. You don't have to/needn't bring your own bedsheets. You need to pack your things properly.

Rule:

Have to means something is obligatory or necessary.

Don't have to / Needn't means something is not necessary.

Need means something is necessary.

Analysis:

• 'You have to pay the rent on time.' — This shows something is necessary/obligatory.
• 'You don't have to/needn't bring your own bedsheets.' — This shows something is not necessary.
• 'You need to pack your things properly.' — This shows something is necessary.

Answer: The second sentence ('You don't have to/needn't bring your own bedsheets.') shows that something is not necessary.