Question

I must tell the truth (pick out the modal auxiliary verb and state its function)​

Answer 1

Answer:

Must tell is the auxiliary verb.

Answer 2

AnswEr :-

I must tell the truth.

↠ Modal auxiliary verb - must.

↠ Function - It is used to express obligation.

Extra Information :-

Modal auxiliary verbs shift the meaning of the main verb uniquely, expressing things such as possibility, ability, permission, obligation etc.

Examples of modal auxiliary verbs are - can, may, must, ought, shall, should, will etc.

Examples :-

• I must go now.
• You should stop drinking.
• May I come in, please?