4. You SHOULDN'T wear a suit if you don’t want to.
must
needn't
mustn't
2a 5. You mustn't put your foot on the seat.
It's not allowed.
It's not necessary.
2a 3. You shouldn't go out without a coat.
It’s not necessary.
It’s not a good idea.
2a 4. We don’t need to go out later.
It’s not a good idea.
It’s not necessary.
3. It’s a public holiday tomorrow, so the office is closed and we MUSTN'T go to work.
must
have to
don’t need to
2a 1. I have to finish this report by 5 p.m.
It's not necessary.
It's necessary.
2. You MUST TO see a doctor if you're not feeling well.
don’t have to
mustn't
should
2a 6. You don’t have to sit there.
It's not allowed.
It's not necessary.
2a 2. We needn’t do this by the end of the day.
It's not necessary.
It's necessary.
1. should practise speaking 2. don't have/need to be 3. shouldn't spend hours studying 4. should study 5. have to/need to/should/must 6. don't have/need to
2b 1. You DON'T HAVE TO go into that room while the paint is drying or you'll get paint on you.
needn't
mustn't
should