"Did you heard someone knocking at the door?"为什么要用at?RT3Q

do did does怎么用?你听说过吗?Do you heard that?还是Did you heard that?还是does...that Did you----the niose last night?Yes,I ----it.A hear..heard B heard...heard C hear...heared you heard 英语翻译你听到那个消息了吗 用过去式,是did you hear that news?还是do you heard that news?还是 did you heard that news? Did you heard someone knocking at the door?为什么要用at?RT3Q you do what when heard did alarm fire the(?)连词成句 Did you hear anything?Yes,we heard something.这是什么句型 Have you heard of __________about JeremHave you heard of __________about Jeremy Lin? Yes. He did quite well in the NBA basketball math. A.anything exciting B.something 用所给单词的适当形式填空：What ____ did you take when you heard the argument?(act) What did you hear last night? I seemed someone knock at the door.A hearB.to have heardC.to hearD.having heard did you heard about the news 这个句子对吗?但是答案选的heard from ,不是说助动词开头的疑问句后的动词用原形吗? 一道反意疑问句的题目I heard that you wen to park它后面的否定形式用did not you 还是did not Have you ever heard you heard the old .Did you _____ the noise outside the house last night?A.listen to B.hear C.heard D.hear of how did you know the news I heard it _the radio.a,on b,from并说明理由 Did you enjoy meeting your former classmates last weekend?Yes,of course.I__(heard)them since weleft school __a noise just then?A.Have you heard B.Were you hearing C.Are you hearing D.Did you hear请说明理由