6 Match the modals to their meanings. An ability is something we can
do. An obligation is something we have to do.
o Can you play the guitar?
1 You need to come to the class at 9.30.
2 You don't have to bring anything to the lesson.
3 We must have six people in the class.
4 You needn't pay today.
5 could play the piano when / was four.
6 had to buy a music book for the course.
A past ability
B present obligation
C past obligation
D no obligation
E present ability