常见的一般过去时精讲ppt.ppt

Lesson 3 一、一般过去时之概述 1.定义： (1)表示过去某个时间发生的动作或存在的状态----与表示过去的时间状语连用 我昨天7点起床。 I got up at 7:00 yesterday. 我爸爸昨天下午在工作。 My father was at work yesterday afternoon. (2)也表示过去经常或反复发生的动作---与表示频度的时间状语和表示过去的时间状语连用。 他去年总是坐公交去上班。 He always went to work by bus last year. 我上学时每周去看一场电影。 I went to the cinema once a week when I was at school. 我在乡下时经常在河边散步。(contryside,riverside) When I was in the countryside, I often walked by the riverside. 2.表过去的时间状语： yesterday, last night, three days ago, one day, that winter, in 1990等 3.频度副词： often always once a week 等 last 3.与ago 连用： a moment two minutes three hours five days one week six months four years one 6.与in 连用： in 1980 in those days in the old days (1)刚刚 just now； (2)前几天 the other day； (I saw him in Paris the other day.) (3)从前 once upon a time (4)很久很久以前 long long ago 二、一般过去时之谓语变化 E.g. You are right. 一般现在时 I want to go to school. We are doing our housework now. 现在进行 时 The bus is leaving at 8:00. be动词(was,were) 助动词(did) 主语+谓语 情态动词(could,might) 实义动词(worked, played) 例如： They were happy. Did you play baseball yesterday? I could do it. He worked here. 3、 最后三个字母辅元辅音，先双写，然后才能加-ed。 stop→stopped plan(计划) →planned drop -- dropped beg -- begged 4、“辅音字母+y”尾，y改为i, 再加 -ed。 carry -- carried study -- studied 巧记不规则动词过去式 keep→kept， feel→felt， sleep→slept，sweep→swept 1.ee:中间去e，末尾加t??? 如：  build→built，lend→lent， send→sent，spend→spent 　2.结尾d变t??? 如：  ring→rang，sit→sat， drink→drank， sing→sang，swim→swam，begin→began， give→gave 　3.遇见i改为a ??如： ride→rode，drive→drove，write→wrote 4.“骑(马)”“开(车)”“写(字)”——把i变o如：? think→thought，buy→bought， bring→brought，figh