asma28hd
2011-03-14, 18:51
Rule
We expresse
1/ obligation
Must – have to
Youmust/have to do the exam
2/ absence of obligation
/no obligation/ optional
Don’t have to
You don’t have to writ this activity
3/ prohibition
Must not
You must not smoke
We expresse
1/ obligation
Must – have to
Youmust/have to do the exam
2/ absence of obligation
/no obligation/ optional
Don’t have to
You don’t have to writ this activity
3/ prohibition
Must not
You must not smoke