Hi!
What have we done this week?
We’ve gone through the different uses of Modal verbs. Here’s the summary:
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Modals of probability ( present and future)
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Will
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won’t
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They express what we strongly believe to be true about the present. Based on our knowledge of people and things: routine, character etc.
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Is that the phone?
It’ll be John. He said he’d ring around now.
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Must
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can’t
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Must is used to express what we infer or conclude to be the most logical or rational interpretation of events. (less certain that “will”) / “can’t” is the negative of must.
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- Look over there! That must be Jon’s new car.
- She can’t have a ten-year-old daughter! She’s only 25!
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Should
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shouldn’t
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It expresses what may reasonably be expected to happen; also that we want that whatever is predicted to happen.
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- Our guests should be here soon. (If they haven’t got lost)
- This homework shouldn’t take you long.
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May
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may not
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It expresses the possibility that sth will happen or is already happening.
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- We may go to Greece for our holidays. We haven’t decided yet.
- We may not have enough money to go abroad this year.
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Might
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might not
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It expresses possibility bur in a more tentative way.
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- It might rain, but I doubt it.
- I might not be back in time for supper, so don’t wait for me.
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Could
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might not
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is used in a similar way to “might”
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- It could rain, but I doubt it.
- It looks like it could rain, but it might not.
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*The negative “couldn’t” has a similar meaning to “can’t,” only slightly weaker.
She couldn’t have a ten-year-old daughter! She’s only 25!
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Can
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We use it to express what it is generally and all-time true. It cannot be used to predict future possibility.(Will be possible or will be able to)
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Cycling in town can be dangerous.
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Modal auxiliaries in the past
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All the modal verbs given above are also used with have + past participle to express different degrees of certainty about the past.
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· You met a man with a moustache? That would have been my uncle tom.
· It won’t have been Peter you met at the party. He wasn’t invited.
· It must have been Simon. He looks like Peter.
· It can’t have been a very interesting party. No one seems to have enjoyed it.
· Where’s Henry? He should have been here ages ago!
· He might have decided not to come. He could have had an accident.
· He can hardly have forgotten to come.
· “Can have” is only used in questions or with “hardly, only or never”.
· Where can he have got to go?
· They can only have known each other for a few weeks.
We’ll go through other uses of modal verbs next week. (This is a promise, not a possibility!)
Despite all the modals, we had some time for idioms with “out of…”
· When do you feel out of breath?
· How long have they been out of work?
· Did you know that a translator computer translated the expression “out of sight, out of mind” into “invisible, insane”?
· Is this information out of date?
Finally, could you make the difference between these pair of words?
Policy /politics economic/ economics economy/economies safety/ security
take over / overtake complimentary / complementary