Structure 2013-08-14

p. 247 Ex 2
1
b has got to
c 'd better
d should
2
a 'll be able to
b can't
c ought to
d 'll have to
e may not
f Should
3
a can
b could
c can
d must
e be able to
f could
4
a must
b should
c may not
d has to
e couldn't
f must
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She may not be at home. = It is possible that she is NOT at home.
She couldn't be at home. = It is NOT possible that she is at home.

You must not come. = It is necessary that you do NOT come.
You don't have to come. = It is NOT necessary that you come.

p. 249
1 couldn't believe (could = past of can)
2 couldn't be ("You couldn't be more wrong if you tried.")
3 can keep / (is able to) / (will be able to)
4 may get rid of (future possibility)
5 should be / ought to be
6 had to go
7 must not know (conclusion, not prohibition)
8 won't have to worry about
9 may go
10 should get on / ought to get on
11 could win / might win
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Homework: p. 250, exercise 4
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supposed, confused, surprised  (silent -e- in -ed)
supposedly, confusedly, surprisedly (pronounce -e- in -ed)
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Regrets and Advisability in the past (Unit 16)
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also Homework: p. 259 questions
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modal perfect (for advisability about the past)
modal + have + past participle

She should have gone to bed earlier. = It was a good idea, but she didn't do it.
= She ought to have gone to bed earlier.

They could have called me. = It was a possibility, but they didn't do it.
= They might have called me.

They might have called me, instead of letting me find out the next day. = They didn't call me. (unreal possibility/blame - Unit 16)

They might have called me, but my phone was off at the time. = Maybe they called me, but I don't know. (real possibility - Unit 17)
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I regret things that I did. I blame you for things that you did.
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I should have told my daughter she was smart.
He shouldn't have discouraged me from applying to college.
I ought to have told my daughter she was smart.
(He ought not to have discouraged me from applying to college.)

I could have studied more, but I decided not to.
She could have studied more, but she didn't.

She might have asked me first, but she didn't.
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What should I have done differently? (What was the best choice?)
What could I have done differently? (What were other choices?)
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Homework: p. 250 and 259