Look at these sentences.
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Animals cannot survive for long without water.
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So desert animals have to find different ways of coping.
The first sentence says what cannot happen or be done; the second tells us what must, therefore, be done, what it is necessary to do.
Complete these sentences using cannot and have to/has to.
1. You __________________ reach the island by land or air; you _______________ go by boat.
2. We ___________________ see bacteria with our eyes; we _____________________
look at them through a microscope.
3. He__________________ have a new bicycle now; he _________________wait till next year.
4. Old people often _______________ hear very well; they _______________ use a hearing aid.
5. Road users ______________ do what they wish; they _____________ follow the traffic rules.
6. She ________________ accept this decision; she __________________question it.
7. You ____________ believe everything you hear; you ____________ use your own judgement.
1. You cannot reach the island by land or air; you have to go by boat.
2. We cannot see bacteria with our eyes; we have to look at them through a microscope.
3. He cannot have a new bicycle now; he has to wait till next year.
4. Old people often cannot hear very well; they have to use a hearing aid.
5. Road users cannot do what they wish; they have to follow the traffic rules.
6. She has to accept this decision; she cannot question it.
7. You cannot believe everything you hear; you have to use your own judgement.