Bildung: 


Das Modalverb "müssen" wird im Englischen mit "to have to" gebildet

Das Modalverb "must" kann nur in der Present Simple verwendet werden. 

Seine Verneinung ist "needn't

 

Beispielsatz in allen Zeiten: 


Present Simple: He must/has to wash her car.

Past Simple: He had to wash her car. 

Present Perfect: He has had to wash her car. 

Past Perfect: He had had to wash her car.

Will-Future: He will have to wash her car.

 

Verneinung:  


Present Simple: He needn't/ doesn't have to wash her car.

Past Simple: He didn't have to wash her car.

Present Perfect: He hasn't had to wash her car.

Past Perfect: He hadn't had to wash her car.

Will-Future: He wont have to wash her car.

 

Fragen: 

Present Simple: Does he have to wash her car?

Past Simple: Did he have to wash her car? 

Present Perfect: Has he had to wash her car?

Past Perfect: Had he had to wash her car?

Will-Future: Will he have to wash her car?