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e office after he had called Davy.否定句:She hadn’t had dinner before she went out. 一般疑問(wèn)句:Had she learnt English before she moved here?特殊疑問(wèn)句:how many English words had he learnt by the end of last year?Simple PresentI have been to Canada. Have you been to Hongkong?Where have you been?I have never been here.過(guò)去完成時(shí)had + (過(guò)去分詞)過(guò)去的過(guò)去:by+過(guò)去的時(shí)間;表“過(guò)去某動(dòng)作或時(shí)間以前”的時(shí)間狀語(yǔ)。He has gone to Beijing.They have gone to the cinema.3.He has always been a good father. I have always been busy.They have always been in America.2.陳述句:I have already told Davy. Davy has known this matter.He has lived here for nearly 10 years.否定句:I haven’t finished my homework..Tim hasn’t e yet.We haven’t heard any news about him一般疑問(wèn)句: Has he worked here since he came here?特殊疑問(wèn)句: How long have you worked in this pany?特別注意:1.動(dòng)作或狀態(tài)發(fā)生在過(guò)去但它的影響現(xiàn)在還存在;也可表示持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。recently/lately。 till now。by+現(xiàn)在時(shí)間;so far。陳述句:I was doing my homework at that time.We were having a party while he was sleeping.否定句:He was not sleeping at 11 o’clock last night.一般疑問(wèn)句: Were you watching TV at that time?特殊疑問(wèn)句: What were you doing at that moment?現(xiàn)在完成時(shí)、過(guò)去完成時(shí)時(shí)態(tài)名稱(chēng)結(jié)構(gòu)常連用的詞主要用法現(xiàn)在完成時(shí)have/has+ (過(guò)去分詞)already;just;befo