Presentation on theme: "OBLIGATION PROHIBITION SUGGESTION NECESSITY MUST/MUSTN’T OUGHT TO/ OUGHT NOT TO NEED TO/ DON’T NEED TO HAVE TO/ DON’T HAVE TO SHOULD/ SHOULDN’T."— Presentation transcript:
OBLIGATION PROHIBITION SUGGESTION NECESSITY MUST/MUSTN’T OUGHT TO/ OUGHT NOT TO NEED TO/ DON’T NEED TO HAVE TO/ DON’T HAVE TO SHOULD/ SHOULDN’T
Do not feed the animals! No smoking! Do not enter! No eating! No talking!
(lack of) PERMISSION REQUEST (lack of) ABILITY POSSIBILITY 1. Could/Would you help me with the homework? 2. You can’t/mustn’t/may not smoke in here. 3. You can/may borrow my dictionary. 4. He can play the piano really well. 5. He could/may/might have the flu. 6. I can’t speak French.
Past & Perfect Modals should have phoned didn’t have to clean ought not to have been rude needn’t have bought weren’t able didn’t need to
Lack of necessity You don’t have to/don’t need to/ needn’t wake up early in the morning. It’s Sunday))) She didn’t need to/ didn’t have to wake up early yesterday because it was Sunday. You needn’t have left so early last night.
Use can, can’t, have to, don’t have to & needn’t buy a ticket to travel on the bus buy a monthly travel pass travel free if you are over 65 eat or drink in the vehicle buy tickets in advance
1. We took our time because we _________ be there until 11 o’clock. 2. You ____________ gone to see a doctor a doctor if you were feeling so ill. 3. Andy _____________ said that to Julie. He really upset her, didn’t he? 4. I was busy last Saturday, so I __________ gone to his party even if I’d wanted to. 5. You ___________ come to pick me up – there are plenty of taxis. 6. He ___________ arrived by now, because he left at least an hour ago. 7. We _____________ rushed, because we got there with plenty of time to spare. 8. If you had sprained your ankle, you ____________ walked here. 9. You ______________ let Paul know what we were doing – he was waiting for us. 10. We _______________ take an exam at the end of the course.
Making Deductions Present Certainty: He must be tired. Uncertainty: He might be tired. Certainty: He can’t be tired. Past Certainty: He must have been at work. Uncertainty: He might have been at work. Certainty: He can’t have been at work.
What might have happened ? Stressed Exhausted Tired Frustrated Angry