2019年秋人教版八年级上册英语课件：Unit 1 Grammar(共16张PPT)

Unit 1 八年级英语RJ版·上册 Grammar 授课人：XXXX 一、新课引入 Find out the past tense of the verbs in Section A, and make a list. stay visit seem stayed visited seemed go do take buy taste went did took bought tasted 二、新课讲解 规则动词和不规则动词的过去式 1.规则动词过去式的变化 规则 示例 一般在词尾加-ed help-helped, play-played 以e结尾的加-d live-lived, hope-hoped 以辅音字母+y结尾的， 变y为i加-ed carry-carried, study-studied 重读闭音节词词尾只有一个辅音字母时， 先双写这个辅音字母，再加-ed stop-stopped, plan-planned 二、新课讲解 2. 常见不规则动词过去式的变化 分类 示例 过去式与动词原形相同 let-let, put-put, read-read,cut-cut i变为a swim-swam, sing-sang, give-gave 中间去e，末尾加t feel-felt, keep-kept 过去式以-ought和-aught结尾的动词 bring-brought, buy-bought i变为o ride-rode, drive-drove ow/aw变为ew know-knew, grow-grew, draw-drew 以d结尾的动词，把d变成t lend-lent, build-built,send-sent 二、新课讲解 一般过去时态 1.构成：动词的过去式(规则变化/不规则变化) 2.用法：表示过去某个时间发生的动作或存在的状态。 表示过去经常或反复发生的动作。 3.常用时间状语：(the day before) yesterday last night / week in 2019 / just now