Hi dear,
First let him explain the modal auxiliaries must and mustn㦙:
Must (subjective obligation)
We often use must to say that something is essential or necessary, for example:
Structure of Must
Must is a modal auxiliary verb. It is followed by a main verb. The structure is:
subject + must + main verb
The main verb is the base verb (infinitive without "to").
Must not, Mustn īt (prohibition)
We use must not to say that something is not permitted or allowed, for example:
- Passengers must not talk to the driver.
Structure of Must not
Must is an auxiliary verb. It is followed by a main verb. The structure for must not is:
subject + must not + main verb
The main verb is the base verb (infinitive without "to").
ACTIVITY:
Let him show a picture of a person and say that he is a diabetic. Now let him show two pictures 1.Sweet 2. Medicine. Now he asks children to answer what this should person do? When he points at medicine pupils say he must take medicine and when he points at sweet the pupils say he mustn㦙 eat sweet. Similarly he can make some more exercises with pictures.
ACTIVITY 2
Prepare a chart that has so many obstacles which has on entrance and one exit. Now blind fold one child and the other child should guide him only while using must and mustn㦙
For example ; you must take right ; You must not go down ;You must move upwards etc., the other child should ensure that he/she guides the blind folded child properly and reaches the exit.
if I am helpful I am happy or else please let me know
All the best for you friend.
Bharat