代老师初中英语动词和时态.pptVIP

一般过去时: Past Simple 概念: 表示过去发生的动作 结构: did 标志语：yesterday、... ago、 in 1992、 last week/month… 1）在确定的过去时间里所发生的动作或存在的状态。　 时间状语有：yesterday, last week, an hour ago, the other day, in 1982等。　 Where did you go just now?2）表示在过去一段时间内，经常性或习惯性的动作。　 When I was a child, I often played football in the street.　 Whenever the Browns went during their visit, they were given a warm welcome.　　　　　 比较：　　Mrs. Darby lived in Kentucky for seven years. 　 (含义：达比太太已不再住在肯塔基州。)　Mrs. Darby has lived in Kentucky for seven years.　( 含义：现在还住在肯塔基州，有可能指刚离去)　　 注意： 用过去时表示现在，表示委婉语气。1）动词want, hope, wonder, think, intend 等。　　　Did you want anything else?　　　I wondered if you could help me.2）情态动词 could, would.　　　Could you lend me your bike? 动词-ed形式的构成： 在动词后加-ed 以字母e 结尾的动词，只+d “ 辅音字母+y ” ，变y 为i, 再+ed 重读闭音节以一个辅音字母结尾的，双写+ed want answer move die carry cry stop plan wanted moved died carried cried stopped planned answered get go eat are do cut say got gotten went gone ate eaten cut cut were been did done said said take swim drink have come put see took taken swam swum drank drunk put put had had came come saw seen The twins ___________(wash) the clothes yesterday. The day before yesterday he ________ (play) basketball over there. _____ Sally ______(sing) two hours ago? washed played Did sing 现在完成时: Present Perfect 概念: 表示已经发生的动作 结构: has done、 have done 标志语：already、 yet、ever、 never、since…、for…、 现在完成时 1．现在完成时的构成：助动词have (has) + 动词的过去分词 注：has 用于第三人称单数，have 用于其他所有人称。 2．现在完成时的用法： （1）现在完成时表示过去发生或已经完成的某一动作对现在造成的影响或结果。通常与表示包括现在在内的时间副词just，already, before, yet, never, ever等状语连用。例如： ① I have never（从未） heard of that before. ② Have you ever（曾） ridden a horse? ③ She has already（已） finished the work. ④ Have you milked the cow yet（还）? Yes, I have done that already. ⑤ I’ve just（刚） lost my science book. 有时没有时间状语；多是一般疑问句。 （2）现在完成时表示过去已经开始，持续到现在,也许还会持