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请问这是一种什么语法现象,为什么是hearthemtalk.请问这是一种什么语法现象:Foreachquestion,check(X)"yes,idid."or"no,Ididn't"asyouhearthemtalk.

题目详情
请问这是一种什么语法现象,为什么是hear them talk.
请问这是一种什么语法现象:
For each question,check(X)"yes,i did." or "no,I didn't" as you hear them talk.
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答案和解析
hear 后跟的省去to的宾语补足语hear sb do sth