8 a) Read the study box. Find examples of (absence of) necessity in the dialogue.

Explanation of (absence of) necessity:

• 'have to': Expresses external necessity or obligation.
• 'don't have to': Expresses the absence of necessity; something is not obligatory.

Examples from the dialogue (implied in the context of Ex. 3a, if it were available):

Assuming the dialogue in Ex. 3a involves tasks or plans, examples could be:

• If the dialogue was about preparing for a trip and someone said, 'I need to pack my bag', this implies necessity.
• If someone said, 'It's Sunday tomorrow, so I don't have to get up early', this shows the absence of necessity.

From the study box itself:

• 'I have to take the dog for a walk before I leave. (it is necessary)' - This clearly shows necessity.
• 'I don't have to go to school today. (it is not necessary)' - This clearly shows the absence of necessity.