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過去某階段或某一時刻正在發(fā)生 What were you doing at 8:30 last night? (過去某時刻正在發(fā)生) -短暫性動詞用過去進行時表示按計劃、打算 During that time he was going with us.(表示打算) -與always ,often ,usually 等連用表喜愛,討厭等感情色彩?! e was always Changing his mind.過去進行時與一般過去時的區(qū)別(1)過去進行時與一般過去時,兩者都表示過去發(fā)生的動作,但過去進行時表示在過去某一特定的時間點或時間段正在進行的動作,而一般過去時表示在過去時間完成的動作?例如: I was typing a letter last night. 昨晚我在打一封信?(可能沒打完) I typed some letters last night. 我昨晚打了一些信?(已經(jīng)打完) A. 過去進行時卻表示動作在持續(xù)或未完成,而一般過時往往表示某一動作已經(jīng)完成?! was reading the book at that time. (未讀完,“讀”的片段) I read the book yesterday. (已讀完,表整個“讀”) B、一般過去時表示只做一次動作,而過去進行時卻表示動作反復地進行。 She waved to me. 她朝我揮了揮手。 It was raining all night.(優(yōu)先用was raining ,rained 為持續(xù)動詞,故也可使用) He was writing a letter the whole of afternoon. (短暫動詞與持續(xù)時間連用,表反復,連續(xù)發(fā)生,不可用一般過去時) when 和while的用法區(qū)別 兩者的區(qū)別如下: ①when是at or during the time that, 既指時間點,也可指一段時間; while是during the time that,只指一段時間,因此when引導的時間狀語從句中的動詞可以是終止性動詞,也可以是延續(xù)性動詞,而while從句中的動詞必須是延續(xù)性動詞。 ?、趙hen 說明從句的動作和主句的動作可以是同時,也可以是先后發(fā)生;while 則強調(diào)主句的動作在從句動作的發(fā)生的過程中或主從句兩個動作同時發(fā)生。 ③由when引導的時間狀語從句,主句用過去進行時,從句應用一般過去時;如果從句和主句的動作同時發(fā)生,兩句都用過去進行時的時候,多用while引導,如: a. When the teacher came in, we were talking. 當此句改變主從句的位置時,則為: While we were talking, the teacher came in. b They were singing while we were dancing.過去進行時練習題三、 選擇題。1. I ______ cooked a meal when you _____ me.a. cooked, were ringing b. was cooking, rangc. was cooking, were ringing160