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After the operation John was able to walk again.(single past occasion) I’m able to play tennis twice a week. (circumstances permit me to do this) I will be able to visit Paris next year. (nothing should prevent me from doing this)
I managed to get two tickets for the concert. (a degree of difficulty was involved) I manage to play tennis twice a week. I hope you will manage to come. (even though you may encounter difficulty in doing this)
I can swim.
You can’t be hungry, you have just eaten two pizzas.
I could swim when I was seven.
week.
has an alibi.
arrive.
request)
wife.
because it’s very bitter.
If you had invited him he might have come to your party.
disappointed
must all work together.
pass this exam. (subjective obligation) All expenses must be approved by the manager.
(emphatic)
light is red. (imposed obligation)
I don’t have to go to work tomorrow. I didn’t have to water the flowers yesterday because it rained.
umbrella?
will be back tomorrow. (not necessary) I needn’t have watered the flowers because it rained in the afternoon. (done but not necessary)
pass the exam.
by now.
You ought not smoke so much.
off.
every day.
very cold.
tired.
just said.
year?
your permission.