Question

Rewrite the following sentence using another modal auxiliary showing ‘compulsion’:
You have to constantly watch out and talk to yourself.

Answer 1

Hint: A modal auxiliary verb is used to change the meaning of other verbs by expressing one experimental process.

Complete step by step answer:
Definition: Modal Auxiliary Verbs are auxiliary Verbs which help the main verbs in providing information like- mood, possibility, time, expectation, permission, ability and obligation.
Must is a modal verb that is used to express necessity: You must come today.
‘Must’ is used to express fixed determination: I must have an opportunity to do what is needed to be done.
“Must”
‘Must’ indicates a situation of necessity or urgency.
1) He must leave the place right now. (urgency)
2) She must behave properly with the others. (necessity)
3) They must refrain from illegal activities as soon as possible. (necessity)
4) You must teach him a lesson for what he did. (necessity)
5) We must report the incident to police for investigation. (urgency)
The above sentences indicate urgency indicating that the action must be performed immediately.
The answer to the given question is: You must constantly watch out and talk to yourself.

Note: The meaning of the sentence should be known well to use auxiliary verb as every auxiliary verb has a definite use.