to be able to – to have to – to be allowed to

Simple Present

George can speak English.
George is able to speak English.
George kann Englisch sprechen.

Can George speak English?
Is George able to speak English?
Kann George Englisch sprechen?

Simple Past 

George could understand the questions.
George was able to understand the questions.
George konnte die Fragen verstehen.

Could George understand the questions?
Was he able to understand the questions?
Konnte er die Fragen verstehen?

Simple Present

Mr. Miller can’t use his notebook.
Mr. Miller isn’t allowed to use his notebook.
Mr. Miller darf sein Notebook nicht benutzen.

Can Mr. Miller use his notebook?
Is Mr. Miller allowed to use his notebook?
Darf Mr. Miller sein Notebook benutzen?

Simple Past 


Maria couldn’t use her phone.
Maria wasn’t allowed do use her phone.
Maria durfte ihr Telefon nicht benutzen.

Could Maria use her phone?
Was Maria alowed to use her phone?
Durfte Maria ihr Telefon benutzen?

Simple Present 

Ben and Ferid must go to school.
They don’t have to sleep at school.
Sie müssen …………
Must they help their parents?

Müssen sie ihren Eltern helfen?
Daniel didn’t have to worry.
Sie mussten / mussten nicht………

Did they have to write a test?Mussten sie einen Test schreiben?

Simple Past 

Yagmur had to do her homework.
Daniel didn’t have to worry.
Sie mussten / mussten nicht………

Did they have to write a test?
Mussten sie einen Test schreiben?