Mustn't, needn't word order
Must
Must - it is necessary to do something. Mustn't - it is necessary not to do something.
Must and infinitive
Must is followed by the infinitive without to.
Must affirmative
I must stop the car.
He / She / It must stop the car.
Must negative
Use must not in prohibitions.
I mustn't stop the car.
He / She / It mustn't stop the car.
Needn't
Needn't: It is not necessary to do something.
Needn't examples
I needn't stop the car.
He / She / It needn't stop the car.
English Must need exercises
Mustn't or needn't? Fill in exercises - Things you needn't do at school and things you mustn't do at school - fill in exercises. Fill in needn't or mustn't.
Online exercises English grammar and courses
Free tutorial Must need. English Must need exercises. English grammar easy to learn.