curriculum/challenges/english/blocks/learn-how-to-ask-and-share-about-educational-and-professional-background/65f3212e767d81dbcfbeb0cc.md
When you want to ask about something that happened in the past, you can often use did to start the question. The word did helps to turn a statement into a question. For example:
You worked on the project. - This is a statement in the past tense. The verb worked shows the action happened in the past.
Did you work on the project? - This is a question. Here, did is added at the beginning, and the main verb work stays in the base form.
That's interesting. So you BLANK work on many programming projects during your studies, BLANK you?
didn't
Brian is asking a question about something that didn't happen in the past. This word is a contraction of did not.
did
This word is used to form a question in the past tense.
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