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1、-现在进行时和过去进行时 知识要点-第 3 页 过去 现在 将来时间轴现在进行时和过去进行时(1)现在进行时定义:现在进行时表示现在或当前一般时间正在进行的动作。时间状语:now,Look!,Listen!,Its o;clock,this week, these days构成:主语+be+动词ing现在分词形式 第一人称+am+v-ing 第二人称+are+v-ing 第三人称+is+v-ing be应为助动词,它应与主语的人称和数保持一致。 句式变化肯定句式:主语+be( am, is, are)+现在分词+其它. 否定句式:主语+be(am, is, are) +not +现在分词+其它
2、. 一般疑问句:Be(am, is, are) +主语+现在分词+其它? 特殊疑问句:疑问词+be(am, is, are)+主语+现在分词+其它? 对现在进行时的特殊疑问句的回答,它不可以用Yes或No直接作答,要根据实际情况回答。 (2)过去进行时 定义:表示过去某时正在进行的状态或动作。常用的时间状语this morning, the whole morning, all day yesterday, from nine to ten last evening, when, whileMy brother fell while he was riding his bicycle and
3、hurt himself. It was raining when they left the station. When I got to the top of the mountain, the sun was shining.句式:主语+was/were+动词ing+其他。1. was/were+Vingeg:My morther was cooking at 6:00p.m. yesterday.(直接表达)2. 用while连接eg:My mother was cooking while I was doing my homework.(可以持续动作时态一致)3. when表示eg:
4、I was doing my homework when my mother came in.(间接表达了具体时间)过去进行时的主要用法1.表示过去某一时间内(正在)进行的动作如:I was doing my homework at 9 p.m. last Sunday.2.表示一动作正在进行时,另一动作同时正在进行.如:I was reading books while he was cleaning the floor.3.表示一个动作正在进行时,另一个动作发生了如:He played when I was studying.4.表示过去将要发生的动作She told us Mr.Lee was arriving here.5.用于故事,以提供其时间背景6.表示礼貌 句型变化肯定句:主语+was/were+doing+其它否定句:主语+was/were+not+doing+其它一般疑问句及答语:Was/Were+主语+doing+其它 答语:Yes,I was./No,I wasnt. 特殊疑问句:特殊疑问词+was/were+主语+doing+其它