1. MODALS AND THEIR FUNCTIONS

2. Obligation, necessity
must
have to
ought to
need

3. advice
should (not)

4. lack of obligation
don't have to
don't need to
needn't

5. prohibition
mustn't
can't
ought not to
shouldn't

6. ОТ ЧЕГО ЗАВИСИТ
ИСПОЛЬЗОВАНИЕ
МОДАЛЬНЫХ ГЛАГОЛОВ?

7. 2. НАСКОЛЬКО ОБЯЗАТЕЛЬНО?
1. КТО РЕШИЛ?
2. НАСКОЛЬКО ОБЯЗАТЕЛЬНО?

8. MUST HAVE/HAS TO NEEDN`T DO/ESN`T HAVE TO MUSTN`T CAN`T
CHOOSES HIMSELF
IS TOLD TO
OBLIGATION
LACK OF OBLIGATION
PROHIBITION
MUST
HAVE/HAS TO
NEEDN`T
DO/ESN`T HAVE TO
MUSTN`T
CAN`T

9. ability, possibility
can

10. speculation
must
may (not)
might (not)
could
can`t

11. TO EXPRESS OUR GUESSES WE USE MODAL VERBS FOR SPECULATION
TO EXPRESS OUR GUESSES WE USE MODAL VERBS FOR SPECULATION. To use them correctly you should consider two questions:
How sure are you in your guess?
What time does your guess refer to?

12. HOW SURE YOU ARE IN YOUR GUESS?
CERTAINLY TRUE
MUST
POSSIBLY TRUE
COULD, MAY, MIGHT
POSSIBLY FALSE
MAY NOT, MIGHT NOT
CERTAINLY FALSE
CAN`T

13. WHAT TIME DOES YOUR GUESS REFER TO?
PRESENT PAST FUTURE
(at the moment) (usual or unknown)
PROGRESSIVE INFINITIVE PERFECT INFINITIVE SIMPLE INFINITIVE
BE + VING HAVE + V V