过去进行时复习.pptVIP

The Past Continuous Tense 过去进行时 Revision: 过去进行时 1. 概念: 表示过去某一时刻或某段时间内正进行的动作。 2. 构成: was/were + 动词现在分词 句式:肯定句：主语+was/were+ doing sth. +时间状语 否定句：主语+was\were +not +doing sth.+时间状语 一般疑问句：Was\Were+主语+doing sth.+时间状语？ 肯定回答：Yes，主语+was\were. 否定回答：No，主语+wasn’t\weren’t . 3.标志词:at that time, at+点时间+yesterday, at+点时间+ last night, from A to B this morning 或者由when，while引导的时间状语从句. Tom play football at this time of yesterday. was ing She was read a book at 2:30 p.m. yesterday. ing What was Tom doing at this time of yesterday? What was Lucy doing at 2:30 p.m. yesterday? They watch TV from 6 to 8 last night. were ing The twins think were ing. What were they doing from 6 to 8 last night? What were the twins doing at this time yesterday? ??现在分词的构成 1) 一般动词在词尾加-ing, 如go--going。 2) 以不发音字母e结尾的动词, 先去掉e, 再加-ing。 come--coming???make--making?? write--writing 3) 以重读闭音节结尾的动词, 如果末尾以一个 辅音字母结尾, 应先双写这个字母, 再加ing， x和w结尾的除外。 如: get--getting????swim--swimming? show--showing ?? 4) 以字母y结尾的单词, 直接加ing。 ????如carrying、playing、studying。 5) 以字母ie结尾的动词, 变ie为y, 再加ing。 ?? die → dying???????????? lie →lying 6) 以元音字母加e结尾, 或以e结尾, 且e发音的 动词, 直接加- ing。 ??? see--seeing????????????be--being ?? 以when和while引导的时间状语从句 1) 延续性动词和非延续性动词 ????延续性动词指动作可以延续一段时间, 而不是 瞬间结束。 ????如: work、study、drink、eat等。 ????非延续性动词指动作极为短暂，瞬间结束。 ????如: start、begin、hit、jump、knock等。 2) 在本单元中, 出现了以when和while引导的 时间状语从句。 when表示“当……的时候”。从句中既可用延续性 动词, 又可用非延续性动词, 这些动词既可以 表示动作, 又可表示状态。 while表示“在……的时候”、“在……期间”。 它强调主句的动作与从句的动作同时发生或 主句的动作发生在从句的动作过程中。While 从句中必须是表示动作或状态的延续性动词。 当...的时候 1.when + 现在时 / 过去时 2. while + 进行时态. 含义：表示过去某个时刻 正在进行的动作。 结构： was/were + doing 例句： What were you doing at this time yesterday? ? We were having a math class. 含义：表示现在 正在进行的动作。 结构： am/is/are + doing 例句： What are you doing now? ? We are having an English class. 现在进行时 过去进行时 过去进行时和一般过去时的区别 过去进行时表示过去正在进行的动作, 而一般过去时则表示一个完整的动作。如： They were writi