roky0071 A) The instructor explains the diagram to students who ask questions during the lecture. Why "explain" and "ask" is used here in present simple not in present continuous? There is no way to decide without further context.
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roky0071A) The instructor explains the diagram to students who ask questions during the lecture. Why "explain" and "ask" is used here in present simple not in present continuous?There is no way to decide without further context. Either verb form (as well as past and future!) are possible.
roky0071B) He had been listening to loud music
roky0071you need further context? I put a link here /owl.english.purdue.edu/owl/resource/601/04/ where I found the first sentenceThat is just a sample sentence to explain why past simple should not be used with present simple there. It offers no further context, and my original statement above stands: the sentence could be cast in any set of compatible verb
roky0071The present simple is used in habitual situationThe context could easily be habit—the usual procedure in classes.