2023年中考语法时态专项现在完成时态复习课件

Present Perfect Tense 现在完成时态 past now future I have already read Treasure Island . 过去读的书,强调现在对书有一定的了解了。 read Tom has already finished his homework,he can play outside. I have cleaned room, it’s clean now. I have lost my pen. 作业已经完成了,导致的后果是现在可以出去玩 房间已经打扫好了,所以房间现在是干净的 笔丢了,可能导致现在无笔可用 past now future live She has lived here for five years. 表示从过去住到现在,可能还会继续住下去 I have taught here since 2018. Bob has known Eric for 3 years. I haven’t seen her these day. 现在完成时态 1. 表示过去发生的动作/状态对现在造成的影响或结果。 2. 表示在过去某个时间开始并持续到现在的动作或状态, 有可能还会继续下去。 1.定义 2.现在完成时构成 I have eaten lunch . have/has done(过去分词) We have cleaned room, it’s clean now. He has lost my pen. 过去分词的构成 动词过去分词的规则变化:_ stay → _ → _ work → _ → _ taste → _ → _ like → _ → _ study → _ → _ copy → _ → _ stop → _ → _ drop → _ → _ stayed stayed worked worked tasted tasted liked liked studied studied copied copied stopped stopped 与该动词的过去式相同 一般情况下直接 + ed 以不发音e结尾的直接+ d dropped dropped 以辅音字母+y结尾的,把y变i 再 + ed 以重读闭音节“辅元辅”结构 结尾的, 双写尾字母,再+ed 动词过去分词的不规则变化:_ cut → _ → _ cost → _ → _ hit → _ → _ put → _ → _ read →_ → _ hurt → _ → _ cut cut cost cost hit hit put put read read hurt hurt 与该动词的原形及过去式相同 AAA型 P136-137 动词过去分词的不规则变化:_ become → _ → _ come → _ → _ run → _ → _ became become came come ran run 与该动词的原形相同 ABA型 P136-137 动词过去分词的不规则变化:_ begin → _ → _ speak → _ → _ choose → _ → _ forget → _ → _ drive → _ → _ write → _ → _ break → _ → _ eat → _ → _ began begun spoke spoken chose chosen forgot forgotten drove driven wrote written broke broken ate eaten 与该动词的原形与过去式都不同 ABC型 P136-137 3.现在完成时标志词 already(已经),yet(还,仍然),ever(曾经),just(刚刚), before(以前),so far(到目前为止)never(从未)等。 already 意为“已经”,用于肯定句,可放在助动词之后,过去分词之前,也可以放在句末。 yet 在疑问句中表“已经”,在否定句中表“还”,常放在句末。 Have you read this book yet? No, I haven’t read it yet. I have already read this book. I have already read Treasure Island. I haven't read Treasure Island yet. Have you read Treasure Island yet ? already的肯定句变否定句或疑问句时, 要将already变为yet, 并置于句末。 I have cleaned classroom. Have you cleaned classroom (yet)? 陈述句 一般疑问句 Yes,