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Modals of Obligation

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Questions and Answers

Which of the following is the correct usage of the modal verb 'must' to express obligation?

I must to go to the store.

I must going to the store.

I must go to the store. (correct)

I must went to the store.

Choose the correct sentence that expresses obligation using 'must' in the negative form.

She must not to leave early.

She mustn't leave early. (correct)

She mustn't leaving early.

She must not leave early.

Which of the following is a correct question form using 'must' to express obligation?

Must you to finish the report?

Must you finishing the report?

Must you finish the report? (correct)

Must you finished the report?

Which of the following sentences correctly uses the modal verb 'have to' to express obligation?

They have to be at the meeting at 9 AM. Signup and view all the answers

Which of the following is the correct negative form of the sentence 'He has to clean his room.'?

He doesn't have to clean his room. Signup and view all the answers

Which of the following questions is formed correctly using the modal verb 'have to' to express obligation?

Do you have to go to the party? Signup and view all the answers

Study Notes

'Must' is used to express strong obligation or necessity.
In the negative form, 'must' expresses prohibition or something that is not allowed.

Correct Usage of 'Must' for Obligation

The correct sentence using 'must' in the negative form to express obligation is in the form of "You must not do something".
Example: "You must not smoke in the building."

Correct Usage of 'Have to' for Obligation

'Have to' is used to express obligation or necessity, similar to 'must'.
The correct sentence using 'have to' to express obligation is in the form of "Someone has to do something".
Example: "He has to clean his room."

Negative Form of 'Have to'

The correct negative form of the sentence "He has to clean his room" is "He doesn't have to clean his room".
This sentence expresses that he is not obligated to clean his room.

Forming Questions with 'Have to'

The correct question form using 'have to' to express obligation is "Does someone have to do something?"
Example: "Does he have to clean his room?"

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Description

Test your knowledge of modals of obligation with this quiz! Explore various scenarios and choose the correct usage of the modal verb 'must' to express obligation. Challenge yourself with questions on affirmative, negative, and question forms.