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Expressing Necessity
Present
- I have to buy some more eggs for my famous cake.
- I have got to repair that old car of mine. (informal)
- I must see the doctor soon because I don't feel well.
- It is necessary that I take a taxi. I'm late.
Past
- I had to work extra hours to pay my bills.
Future
- I'll have to to borrow money.
Lack of necessity
Present
- I don't have to drive fast.
- I don't need to write the report myself. My secretary can do that for me.
- I needn't buy all these things.
Past
- I didn't have to tell him about my project.
Future
- I won't have to revise my lessons. I learn them by heart.
Expressing Obligation
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