初中英语时态讲解初中阶段，要求学生掌握动词六种时态的基本结构(一般现在时，一般过去时，现在进行时，过去进行时，现在完成时和一般将来时态)及它们的主要用法和区别。
了解过去将来、过去完成时态的基本用法，解题时注意找出关键词，正确判断出时态，按时态结构正确变化动词。
注意句子时态的一致性，注意对特殊时态的处理。
1、一般现在时。
一般现在时通常表示目前阶段经常发生的动作或存在的状态。
通常用“usually, often, every day, sometimes”。
结构:1）be动词。
有一顺口溜：我用am ，你用 are ，is 用于他，她，它, 单数is，复数are.肯定式:主语+ am /is/are +其他否定式:主语+ am/is/are +not + 其他疑问式:Am /Is /Are + 主语+ 其他?简略回答: (肯) Yes,主语 + am/ is /are(否) No,主语 + am /is/are not2）行为动词（实义动词）除主语是第三人称单数外，都用动词原形，主语是第三人称单数时，在动词词尾加-s或-es 。
“动词第三人称单数”的加法即“如何从动词原形变为第三人称单数”1、一般情况加s.2、以o, s, x, ch, sh 结尾加es.3、以“辅音字母+y”结尾改y为i +es肯定式:主语+动词原形/动词的第三人称单数否定式:主语+助动词 don't/doesn't +动词原形+其他疑问式:Do/Does+主语+动词原形+其他简略回答:(肯)Yes,主语+do/does (否)No,主语+do/does not缩写形式: don't == do not doesn't ==does not 注意：have的第三人称单数为has 用法：1.表示事实,现状,性质或经常的,习惯的动作,常与often, usually, always, sometimes, today,every day,once a week, every five minutes, on Sundays等时间状语连用, eg. He hasa brother.2.表示普遍真理. eg. The earth goes round the sun.3.表示在现在时间里所发生的一个动作 . eg. Here comes the train.4.在时间和条件状语从句中代表一般将来时 . eg.I'll go with you if you are free tomorrow.一般现在时用法专练:一、用括号内动词的适当形式填空。
1. He often ________(have) dinner at home.2. Daniel and Tommy _______(be) in Class One.3. We _______(not watch) TV on Monday.4. Nick _______(not go) to the zoo on Sunday.5. ______ they ________(like) the World Cup?二、改错(划出错误的地方，将正确的写在横线上)1. Is your brother speak English? __________________2. Does he likes going fishing? __________________3. He likes play games after class. __________________4. Mr. Wu teachs us English. __________________5. She don’t do her homework on Sundays. _________________2、现在进行时。
通常用“now/look/listen”.1．现在进行时表示现在正在进行或发生的动作，也可表示当前一段时间内的活动或现阶段正在进行的动作。
2．现在进行时的结构：.肯定句：主语+be（is,am,are ） +动词现在分词-ingeg: I am(not) doing my homework.You/We/They are(not) reading.否定句：主语+be（is,am,are ）+not + 动词现在分词-ing一般疑问句：Is(Are)+主语+动词现在分词-ing？特殊疑问：疑问词+ be + 主语 + 动词ing?3.动词加ing的变化规则1)一般情况下，直接加ing，如：cook-cooking2)以不发音的e结尾，去e加ing，如：make-making, taste-tasting3)如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running, stop-stopping,swim—swimming4. 现在进行时专项练习：用所给的动词的正确形式填空：1.The boy __________________ ( draw)a picture now.2. Listen .Some girls _______________ ( sing)in the classroom .3. My mother _________________ ( cook )some nice food now.4. What _____ you ______ ( do ) now?5. Look . They _______________( have) an English lesson .6.______Helen____________(wash )clothes? Yes ,she is .3、一般过去时态一般过去时通常用“a moment ago, just now, yesterday, last…”等。
1．一般过去时表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语连用。
一般过去时也表示过去经常或反复发生的动作感谢。
2．Be动词在一般过去时中的变化：⑴am 和is在一般过去时中变为was。
（was not=wasn’t）⑵are在一般过去时中变为were。
（were not=weren’t）⑶带有was或were的句子，其否定、疑问的变化和is, am, are一样，即否定句在was或were 后加not，一般疑问句把was或were调到句首。
4.动词过去式的变化：不规则动词的变化：原形过去式原形过去式原形过去式原形过去式sweep swept teach taught have had go went keep kept think thought do did find found sleep slept buy bought eat ate say said feel felt drink drank is/am was take took read read give gave are were mean meant put put sing sang drive drove meet met cut cut begin began speak spoke make made let let ring rang write wrote see saw fly flew run ran ride rode come came draw drew sit sat hear heard tell toldgrow grew learn learned/learntget got know knew5.特殊疑问句：⑴疑问词+did+主语+动词原形？如： What did Jim do yesterday?⑵疑问词当主语时：疑问词+动词过去式？如：Who went to home yesterday?过去时练习:一、用be动词的适当形式填空1. I _______ at school just now.2. He ________ at the camp last week.3. We ________ students two years ago.4. They ________ on the farm a moment ago.5. Yang Ling ________ eleven years old last year.6. It ______ Ben’s birthday last Friday.二、用行为动词的适当形式填空1. He _________ (live) in Wuxi two years ago.2. The cat ________ (eat) a bird last night.3. We _______ (have) a party last Halloween.4. Nancy ________ (pick) up oranges on the farm last week.5. I ________ (make) a model ship with Mike yesterday.6. He _______ football now, but they _______ basketball just now. (play)7. _______ they ________ (sweep) the floor on Sunday? No, they _____.三、中译英1．格林先生去年住在中国。
2. 昨天我们参观了农场。
4.过去进行时：肯定句：主语+助动词be (was,were)+动词现在分词-ing+其它否定句：主语+助动词be (was,were)+not+动词现在分词-ing+其它一般疑问句：Was(Were)+主语+动词现在分词-ing+其它？特殊疑问句：疑问词+was(were)+动词现在分词-ing+其它?用法:1、表示在过去某一时间正在进行的动作，往往有表示过去的时间状语then, at that time, this time yesterday等，或与过去发生的某事同时发生的动作（即与when, while引出的时间状语从句连用）。
例：They were talking about a film at six yesterday evening. 昨晚6点他们正在谈论一部电影。
What were you doing at this time last week? 上周的这个时候你在干什么？When the teacher came in, they were talking. 老师进来时，他们在讲话。
2、表示在过去某一段时间内进行的动作。