Which sentence correctly uses a modal verb to express an obligation in...
The correct answer is Option D, "She should have submitted the report by now." The modal verb "should" in the past form ("should have") is used to express an obligation or expectation related to an action that was supposed to happen in the past.
Interesting fact:
"Should have" is used to indicate an obligation or expectation that was not fulfilled in the past, suggesting that the report was expected to be submitted by a certain time but wasn't.
Which sentence correctly uses a modal verb to express an obligation in...
Explanation:
Modal verbs for expressing obligation:
Modal verbs are used to express obligation, such as 'should', 'must', 'ought to', etc. These verbs indicate that something is necessary or required to be done.
Correct answer:
The correct answer is option 'D': She should have submitted the report by now. This sentence uses the modal verb 'should' to express an obligation in the past. It implies that submitting the report was necessary or expected to have been done by a certain time.
Explanation of other options:
a) They might have completed their homework.
- This sentence uses 'might', which expresses possibility or uncertainty, not obligation.
b) You must finish your meal.
- This sentence correctly uses 'must', which expresses a strong obligation in the present or future, not the past.
c) He could have gone to the gym yesterday.
- This sentence uses 'could', which expresses possibility or ability, not obligation.
Conclusion:
Using modal verbs correctly is essential for conveying obligations clearly in a sentence. In this case, the modal verb 'should' effectively communicates the obligation in the past tense.
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