人教版八年级英语上时态讲义及练习.docVIP

时态一般现在时-s，另外be和have有特殊的人称形式。 在加词尾-s时要注意： 情况 加法 例词 一般情况 加-s reads, writes, says 以ch, sh, s, x, 或o收尾的词 加-es teaches, washes, guesses, fixes, goes 以“辅音字母+y”结尾的词 变y为i再加-es try－tries carry－carries 二．一般现在时表示: (1)表示现在的状态, 例如:He’s twelve. (2)表示经常性的或习惯性的动作, 常与often, usually, sometimes, always, every day等表示经常性的或习惯性的时间状语连用.例如:I go to school every day. (3)表示主语具备的性格和能力, 例如:She likes apple. （4）三 句型 1. 肯定句结构:(1) 行为动词:a. 主语为第一、二人称复数人称They go to school every day.b.主语为第三人称单数s/es+宾语。 Lily often likes singing.(2)系动词(be): I am... They/We/You are… He/She/It is…2.否定句结构:(1) 行为动词:a. 主语为第一、二人称,复数人称don’t+动词原形They don’t go to school every day. b.主语为第三人称单数doesn’t +动词原形Lily doesn’t like singing.(2)系动词(be): is/am/are后加not I am not a worker.3. 一般疑问句结构:a. 主语为第一、二人称,复数人称 Do+they/we/you+动词原形Do they go to school every day? （Yes, they do. No, they don’t.）b.主语为第三人称单数 Does +he/she/iIt+动词原形Does Lily often like singing? (Yes, she does. No, she doesn’t.)（2) 系动词(be): is/am/are主语  Are you a worker? (Yes, I am. No, I’m not.) 4.特殊疑问句结构 特殊疑问词（what, how often, which, where,who）+一般疑问句？ （1）行为动词  What do they do every day?  How often does Peter go fishing? （2) 系动词(be):一般过去时 构成规则 原形 过去式 一般在动词末尾加-ed work plant play worked planted played 结尾是e的动词在末尾加-d like live change liked lived changed 末尾只有一个辅音字母的重读闭音节词，先双写这个辅音字母，再加-ed plan（计划） stop drop planned stopped dropped 以辅音字母加y结尾的，先变y为i再加-ed carry study cry carried studied cried 二．一般过去时表示: （1）表示过去某个时间发生的动作或存在的状态.常与yesterday…, last…, …ago, in1990等表示过去状态的时间状语连用What did you have for breakfast this morning? （2）表示过去某一段时间内经常或反复发生的动作，这时常和表示频度的状语连用，如Last term we often did experiments. 三．句型1. 肯定句结构:(1) 行为动词: 主语+动词的过去式The twins went to school two hours ago.(2) 系动词(be): I/ He/She/It+was… They/We/You+were… I was at home last night.2.否定句结构:(1) 行为动词: 主语+didn’t+动词原形The twins didn’t go to school two hours ago.(2)系动词(be): wasn’t/weren’t+表语。 I wasn’t at home last night.3. 一般疑问句结构:(1) 行为动词: Did+主语+动词原形…?Did the twin