Unit 2 Honesty is the best policy. Grammar

Modals

Must
Expressing : Ability, permission, possibility, Impossibility, regrets

Present (must)
-I must stop when the traffic lights turn red
-I must be back at 10 o'clock
Past (must+have+past participle)
-She must have lost her phone
-I must have been the wrong place


Can't/couldn't
Expressing: Impossibility, regrets

Present/future (can't/couldn't)
-You can't fix the internet
-YOU couldn't take a picture

Past (can't/couldn't+have+past participle)

-She couldn't have remained
-You can't have eaten a different food

Should/ought to
Expressing: obligation, advice,

Future (Should/ought to)
-I should/ought to see a doctor
-you should/ ought to drive more carefully
Past (should+have+past participle)
-Luis should have studied before going to the beach
-I should have been surprised

Could/May/Might

Expressing: ability, permission, probability

Present/ Future (Could/May/Might)
-Excuse me could I just say something
-May I call you at night
-Might I use your phone

Past (Could/May/Might+have+past participle)

- Could have gone to the beach after the test
-He may have been sick
-She might have forgotten about the date of the party








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