AFFIRMATIVE
|
NEGATIVE
|
INTERROGATIVE
|
I can read.
|
I can’t / cannot swim.
|
Can I go to the toilet?
|
You can read.
|
You can’t / cannot swim.
|
Can you go to the
toilet?
|
He /she /it can read.
|
He /she /it can’t / cannot swim.
|
Can he /she / it go to
the toilet?
|
We can read.
|
We can’t / cannot swim.
|
Can we go to the
toilet?
|
You can read.
|
You can’t / cannot swim.
|
Can you go to the
toilet?
|
They can read.
|
They can’t / cannot swim.
|
Can they go to the
toilet?
|
SHORT ANSWERS (+, -)
|
Yes, subject + CAN.
|
No, subject + CAN’T.
|
2 MUST: OBLIGATION (Affirmative) ≠ MUSTN'T: PROHIBITION (Negative) - RULES
I must
study.
|
I mustn’t
/ must not smoke.
|
You must
study.
|
You mustn’t
/ must not smoke.
|
He / she / it must study.
|
He / she / it mustn’t / must not smoke.
|
We must
study.
|
We mustn’t
/ must not smoke.
|
You must
study.
|
You
mustn’t / must not smoke.
|
They must study.
|
They mustn’t / must not smoke.
|
HAVE TO /
NEED TO
|
DON’T HAVE
TO / DON’T NEED TO (NEEDN'T)
|
I have
to / need to speak English in class.
|
I don’t
have to pay. It’s free.
I don’t need to pay / I needn’t pay.
|
You have
to / need to speak English in class.
|
You don’t
have to pay. It’s free.
You
don’t need to pay / You needn’t pay.
|
He/she/ it has to / needs to speak English in class.
|
He/she doesn’t have to pay. It’s free.
He
doesn’t need to pay / He needn’t pay.
|
We have
to / need to speak English in class.
|
We don’t
have to pay. It’s free.
We don’t need to pay / We needn’t pay .
|
You have
to / need to speak English in class.
|
You don’t
have to pay. It’s free.
You
don’t need to pay / You needn’t pay
|
They have to / need to speak English in class.
|
They
don’t have to pay. It’s free.
They don’t need to pay / They
needn’t pay.
|
AFFIRMATIVE
|
NEGATIVE
|
INTERROGATIVE
|
I should do exercise.
|
I shouldn’t / should not eat a lot of
sweets.
|
Should I go to the gym?
|
You should do exercise.
|
You shouldn’t / should not eat a lot of
sweets.
|
Should you go to the gym?
|
He/she/it should do exercise.
|
He/she/it shouldn’t / should not eat a lot of
sweets.
|
Should he/she/ it go to
the gym?
|
We should do exercise.
|
We shouldn’t / should not eat a lot of
sweets.
|
Should we go to the gym?
|
You should do exercise.
|
You shouldn’t / should not eat a lot of
sweets.
|
Should you go to the gym?
|
They should do exercise.
|
They shouldn’t / should not eat a lot of
sweets.
|
Should they go to the gym?
|
SHORT ANSWERS (+, -)
|
Yes, subject + SHOULD.
|
No,subject SHOULDN’T.
|
OUGHT (NOT) TO + INFINITIVE:
It is slightly different to "should" and "ought to", because it implies there is a negative consequence to (not) performing the action.
5 MAY - POSSIBILITY, PERMISSION* MIGHT- REMOTE POSSIBILITY
|
I may / may not come. |
I might / might not come. |
|
You may / may not come. |
You might / might not come. |
|
He / she / it may / may not come. |
He / she / it might / might not come. |
|
We may / may not come. |
We might / might not come. |
|
You may / may not come. |
You might / might not come. |
|
They may / may not come. |
They might / might not come. |

