Unit 8 Life in the future 4-语法讲义（学生版＋教师版）

中小学教育资源及组卷应用平台 Unit 8 Life in the future Grammar 语法学习—过去进行时 1、过去进行时表示过去某一时刻或者某段时间_____的动作，常和表过去的时间状 语连用，如： I _____ my homework at this time yesterday. 昨天的这个时候我正在做作业。 They _____ you yesterday.他们昨天一直在等你。 二、过去进行时的构成： 　　肯定形式：_____ 　　否定形式：_____ 　　疑问形式：_____　　 三、基本用法： 1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。常与之连用的时间状语有， at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…)，when sb. did sth等时间状语从句， 如：What _____ at 7p.m. yesterday 昨天晚上七点你在干什么？ I first met Mary three years ago. She _____at a radio shop at the time. 我第一次遇到玛丽是在三年前，当时她在一家无线电商店工作。 I _____when she knocked at the door. 她敲门时我正在做饭。 2. when后通常用表示暂短性动词，while后通常用表示持续性动词，因此它所引导的状语从 句中，谓语动词常用进行时态，如： When the car exploded I was walking past it.= _____ I was walking past the car it exploded. 3. when用作并列连词时，主句常用进行时态，从句则用一般过去时，表示主句动作发生的过 程中，另一个意想不到的动作发生了。如： I_____ in the street when someone called me. 我正在街上走时突然有人喊我。 4. when作并列连词，表示“（这时）突然”之意时，第一个并列分句用过去进行时，when引 导的并列分句用一般过去时。如： I _____ when I met him. 我正在散步，突然遇见了他。 We_____when it began to rain. 我们正在外边玩，这时下起雨来了 四、一般过去时与过去进行时的用法比较： 一般过去时表示“在过去某个时间发生的动作或存在的_____”，而过去进行时则表示“在过去 某个特定时间_____的动作”。如： Tom _____ to his friend last night. 　　汤姆昨晚给他的朋友写了封信。（信写完了） 　　Tom _____ to his friend last night. 　　汤姆昨晚一直在给他的朋友写信。（信不一定写完，只是强调了动作的延续性）。 语法练习 一、单项选择。 1.Students in Grade Nine _____a maths exam at this time yesterday. A. take B. are taking C. were taking D. have taken 2.Amon _____ his ship in a big storm when a giant fish came out of the sea. A. will sail B. is sailing C. was sailing D. has sailed 3.--Hurry up! --One moment. I _____ my e-mail and then I’m ready to go. A. read B. am reading C. was reading D. have read 4.--I’ve never seen Mr. Taylor before. --Don’t worry. I _____ him to you before the meeting. A. will introduce B. introduced C. have introduced D. had introduced 5.— I called you last night, but nobody answered. Where were you then — Oh, I _____ my pet dog in my yard. A. walked B. was walking C. am walking D. will walk 6.–Linda, Dad has finished his work and we _____ to the gym to pick you up. -Thank you, Mum. A. drive B. drove C. have driven D. are driving 7.—It's ten years since we came here. —How time flies! We ____ in China for so long. A. work B. worked C. will work D. have worked 8. While we _____ the picnic, it _____ to rain. A. are having; started B. have; is starting C. were having; started D. were having; was starting 9. He ____ ... ...