Modals with Multiple Uses

MODALS with MULTIPLE USES

1. MODALS with MULTIPLE USES

2. To show that something was probable in the past:
VERY CERTAIN
must (not) have V3
can’t have V3
couldn’t have V3

3. Jack had a stomachache after dinner.
Sofia was at a movie with me last night.
He must have eaten too much.
You couldn’t have seen her at the mall.

4. To show that something was possible in the past:
UNCERTAIN
could have V3
may (not) have V3
might (not) have V3

5. He could/may/might have missed the bus this morning.
Tanya was supposed to meet me before school.
David is usually here by now.
She may/might not have gotten the message.

6. PAST
must (not) V1
have to V1
have got to V1
had better (not) V1
should (not) V1
OPINION or ADVICE
PRESENT
should (not) have V3

7. Parents have got to monitor the shows
their children watch.
The kids have better not spend
so much time indoors playing
computer games.

8. I should have listened the advice
my parents gave me
about having a healhty life.
We should not have ignored the scientists’
warnings about global warming.

9. THANKS 
thechadash

10. THANKS 
thechadash