Can you tell me which one is correct:<br/><br/>1. "Did you <b>had</b> a chance to look at. . ."<br/><br/>2."Did you <b>have</b> a chance to look at. . ."<br/><br/>I assume it is #2 because after did the verb has to be in infinitive. Is that correct?<br/><br/>Also does that mean that I should always write:<br/><br/>Did he have a snack? (as oppose to "Did he has a snack?")<br/><br/>I'm genuinely confused about how Have/Has/Had function when used after Did?<br/><br/>thanks!