Question Mark

A question mark is, naturally, a mark which shows the sentence is a question. 



A question mark is required at the end of an interrogative sentence.



Interrogative sentences (sentences which ask a question) may not be clearly identified by a question word (who, what, when, where, why, how). An interrogative sentence must be identified by a question mark, so the reader understands the writer’s intended meaning.



Correct: When do you need to have this finished?

Correct: I need to have this finished by tonight.

Correct: You need to have this finished by tonight?



Correct: Will you eat dinner with me?

Correct: You will eat dinner with me.

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