1. MAY
1.1. PERMISSION
1.2. FUNTIONS
1.2.1. IT IS USED TO EXPRESS POSSIBILITY AND TO ASK FOR PERMISSION IN A FORMAL WAY
1.3. EXAMPLE
1.3.1. MAY I LEAVE NOW?
2. MIGHT
2.1. SMALL PROBABILITY
2.2. FUNTIONS
2.2.1. IS A MODAL VERB MOST COMMONLY USED TO EXPRESS POSSIBILITY
2.3. EXAMPLE
2.3.1. OUR NEIGHBORS MIGHT NOT BE AT HOME
3. MUST
3.1. RESPONSIBILITY
3.2. FUNTIONS
3.2.1. IT IS USED TO EXPRESS OBLIGATION, NEED, PROHIBITION AND DEDUCTION
3.3. EXAMPLE
3.3.1. YOU MUST NOT DRINK AND DRIVE
4. SHOULD
4.1. RECOMMENDATION
4.2. FUNTIONS
4.2.1. USED TO MAKE RECOMMENDATIONS OR GIVE ADVICE. IT CAN ALSO BE USED TO EXPRESS OBLIGATION AS WELL AS EXPECTATION
4.3. EXAMPLE
4.3.1. THEY SHOULD PRACTICE MORE IF THEY WANT TO WIN THE CHAMPIONSHIP
5. WILL
5.1. FUTURE
5.2. FUNTIONS
5.2.1. IT IS USUALLY USED TO SPEAK OF SPONTANEOUS DECISIONS OR OF FACTS THAT COULD HAPPEN IN A FUTURE
5.3. EXAMPLE
5.3.1. WILL THEY FIND A CURE FOR CANCER?
6. CAN
6.1. PRESENT ABILITY
6.2. FUNCTIONS
6.2.1. IT IS USED TO EXPRESS A SKILL THAT HAS A PARTICULAR PERSON, AS WELL AS TO GIVE TO KNOWING A POSSIBILITY OR TO ASK FOR PERMISSION.
6.2.2. EXAMPLE
6.2.2.1. I CAN SPEAK FIVE LANGUAGES
7. COULD
7.1. PAST ABILITY
7.2. FUNTIONS
7.2.1. IT IS USED TO EXPRESS ABILITY IN THE PAST AND TO EXPRESS COURTESY.
7.2.2. EXAMPLE
7.2.2.1. I COULDN'T SLEEP LAST NIGHT
8. SHALL
8.1. OBLIGATION
8.2. FUNTIONS
8.2.1. IT IS USED FOR SUGGESTIONS AND OBLIGATIONS AND TO EXPRESS SOMEONE'S OBLIGATION.
8.3. EXAMPLE
8.3.1. THE HIRER SHALL BE RESPONSIBLE FOR THE MAINTENANCE OF THE VEHICLE
9. OUGHT TO
9.1. FORMAL RECOMMENDATION
9.2. FUNTIONS
9.2.1. WE USE OUGHT TO WHEN TALKING ABOUT THING WHICH ARE DESIRED OR IDEAL
9.3. EXAMPLE
9.3.1. SHE OUGHT TO QUIT SMOKING
10. WOULD
10.1. PAST (USED TO)
10.2. FUNTIONS
10.2.1. IS A PAST TENSE EXPRESSION THAT DESCRIBES A HABIT THAT SOMEONE ONCE HAD
10.3. EXAMPLE
10.3.1. I WOULD LIKE TO PLAY TENNIS ON SUNDAYS