小学英语语法专题十：（时态）过去进行时 课件

语法专项课件（过去进行时）考点大观易错辨析通关训练过去进行时定义过去进行时表示过去某一时刻或某一段时间内正在进行或发生的动作。考点大观易错辨析通关训练过去进行时的结构否定形式问句形式was/were + not + doing Was/Were+ 主语+doing? was/were + doingHe was sleeping at that time.He wasn’t sleeping at that time.Was he sleeping at that time?肯定形式考点大观易错辨析通关训练过去进行时标志词then, at that time, this time yesterday, at 5 o’clock last night, all night, all the morning, from 7:00 to 9:00 yesterday…They were having a class this time yesterday.I was drawing a horse when the teacher came in.考点大观易错辨析通关训练动名词变化规则口诀规则例子直1. 一般情况下，直接在动词后加 -ing 。play –playing去2. 动词以不发音的 -e 结尾，要去 -e加 -ing 。take – taking双3. 重读闭音节的动词，要双写词尾字母，再加 -ing 。cut – cutting变4. 以 -ie 结尾的动词，把 ie 变成 y 再加 -ing 。lie - lying考点大观易错辨析通关训练易错点 1when 的用法when 和 while 引导时间状语从句1. 状语从句表示短时间的动作，主句常用进行时态或完成时态。When I came in, he was reading the newspaper.非延续性动词： come, go, leave, arrive, meet, die 等。考点大观易错辨析通关训练易错点 1when 的用法when 和 while 引导时间状语从句2. 状语从句表示长时间的动作或状态，主句常用进行时态。When she was making a call, I was writing a letter.考点大观易错辨析通关训练易错点 1when 的用法when 和 while 引导时间状语从句3. 表示突然发生某事，意思是“正在……时突然”，主句常用过去进行时， when 从句常用一般过去时。I was just coming along to see you when I ran into Wilson.考点大观易错辨析通关训练易错点 1while 的用法when 和 while 引导时间状语从句1. 主句和从句都用一般过去时。She listened carefully while he read.延续性动词： read, study, sleep, write, listen, watch等。考点大观易错辨析通关训练易错点 1while 的用法when 和 while 引导时间状语从句2. 从句用过去进行时，主句用一般过去时。Wh...