can

cannot

können

We can speak English.

to be able to

to be not able to

können, fähig sein

They were able to run faster.

may

may not

dürfen, möglich sein

On this road wild animals may cross.

to be allowed to

to be not allowed to

dürfen, erlaubt sein

She wasn't allowed to go to the party

must

need not

müssen

In this park you must keep off the lawn.

should

should not

sollen

The road is dangerous. You should drive carefully.

need

must not

brauchen

Children only need to pay half the price.