八年级英语上册时态复习.doc

1、3eud教育网 百万教学资源，完全免费，无须注册，天天更新！语法专项II 动词一. 动词是表示动作或处于某种状态的词，它分为行为动词，系动词、助动词和情态动词，动词种类多，变化又复杂，是学习英语的难点之一，下面根据动词的特点进行归类，并提供一些辨别方法，以便于理解和掌握。 1. 行为动词在动词中数量最多，它含有实在的意义（又叫实义动词），表示动作或状态，在句中可以单独作谓语，行为动词又分为及物动词和不及物动词，及物动词后面必须加宾语，意义才完整，不及物动词后面不能直接带宾语，常需要在宾语前加介词才能带宾语。 eg: We study English very hard. She has a b

2、ook in her hand. The sun rises in the east. 2. 连系动词本身有一定词义，但不能独立作谓语，必须与表语一起构成谓语，常见的连系动词有：be, look, sound, get, become等。 eg: My parents are both farmers. The milk tastes terrible. The song sounds good. 3. 助动词本身无词义，不能独立作谓语，必须和主要动词构成谓语，表示疑问，否定，时态或其它语法形式。常见的助动词有：be, have, do, will, shall等。 eg: Do you ha

3、ve a brother? Have you got an English-Chinese dictionary? I didnt go to the cinema yesterday. 4. 情态动词本身有词义，但不能独立作谓语，只能和主要动词一起构成谓语，表示说话者的语气和情态，情态动词没有人称和数的变化，情态动词本身可以构成疑问和否定，常见的情态动词有：can, may, must, will, shall, need等。 eg: Can you sing the English song? Everyone must get to school on time. 二. 动词的时态：（一

4、）时态概述：作谓语的动词用来表示动作（情况）发生时间的各种形式称为时态，英语中的时态，就是通过特殊的动词词尾或加一些相关的助动词be, have（has）等，用来表示动作或事件发生的不同时间和方面。 eg: He reads newspapers every day. He read the newspaper yesterday. He is going to read the newspaper tomorrow. （二）一般现在时： 1. 动词变化：一般现在时主要用动词原形表示，但第三人称单数后要加词尾-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

5、加-sreads, writes, says以ch, sh, s, x, 或o收尾的词加-esteaches, washes, guesses, fixes, goes以“辅音字母+y”结尾的词变y为i再加-estrytriescarrycarries读音：情况读法例词在ptkf等清辅音后shelps, hates, asks, laughs在sztd3等音后izfaces, rises, wishes, watches, urges在其他情况下zplans, cries, shows 2. 一般现在时主要表示： （1）经常性或习惯性的动作，常与这样的时间状语连用：always, often,

6、 usually, sometimes等 eg: We always help each other. It often snows in winter. I get up early every morning. （2）表示主语现在的特征、性格、能力等。 eg: He loves sports. Jane is an outgoing girl. Tom and Tim both have medium height. （3）表示客观、普遍真理 eg: Two and four makes six. Water boils at 100 The moon moves round the ea

7、rth. 3. 一般现在时的疑问句一般以在句首加助动词do，does的方式构成。第三人称单数加does，其他加do，这时动词一概用原形；动词be只需与主语位置对调就行了。 eg: Do you like English? Do they have story books? What does she do every evening? Is she at home? Are you good at English? 4. 一般现在时的否定式是do not（dont）或does not （doesnt）动词原形来构成的，be动词做谓语动词只需在be后加not构成否定。 eg: I dont li

8、ke oranges at all. She doesnt work in the TV station. They arent students. Im not busy every weekend. 三. 现在进行时： 1. 动词变化：现在进行时由“am /is /are动词现在分词”构成。加-ing的规则如下： （1）一般在动词原形末尾加-ing。如： staystayingdodoing listenlisteningsuffersuffering workworkingspendspending looklooking （2）以不发音的字母e结尾的动词，先去掉e，再加-ing。如：

9、makemakingtaketaking givegivingrideriding pleasepleasingrefuserefusing closeclosingoperateoperating （3）以一个辅音字母结尾的重读闭音节词，先双写这个辅音字母，再加-ing。如： putputtingsitsitting runrunningwinwinning beginbeginning 2. 现在进行时的用法 （1）表示说话时正在进行或发生的动作，这时可以不用时间状语，也可以和now, at present, at the moment等时间状语连用。有时用一个动词，如look（看），li

10、sten（听）。 eg: What are you reading now? Listen! Someone is singing in the classroom. （2）表示当前一段时期的活动或现阶段正在进行的动作。 eg: They are working in a factory these days. More and more people are giving up smoking. （3）表示最近按计划或安排要进行的动作。 现在进行时有时可表示一个在最近按计划或安排要进行的动作，即可以用来代替将来时。 eg: When are you leaving? Are you goin

11、g to Tibet tomorrow? 3. 现在进行时的否定句和疑问句比较简单。否定句在be（am, is, are）后面加not；疑问句把be动词移到主语前。 eg: I am not working. What are you reading now? How are you feeling today? The train isnt arriving soon. 四. 一般过去时： 1. 动词变化：一般过去时主要表示过去的动作或状态，在句中由主语动词的过去式来表达。构成规则原形过去式一般在动词末尾加-edworkplantplayworkedplantedplayed结尾是e的动词在

12、末尾加-dlikelivechangelikedlivedchanged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-edplan（计划）stopdropplannedstoppeddropped以辅音字母加y结尾的，先变y为i再加-edcarrystudycrycarriedstudiedcried否定式疑问式否定疑问式简单回答I did not work. Did I work? Did I not work? Yes, you did. No, you didnt. You did not work. Did you work? Did you not work? Yes

13、, I did. No, I didnt. He / She / It did not work. Did he / she / it work? Did he / she / it not work? Yes, he / she / it /did. No, he /she /it didnt. We did not work. Did we work? Did we not work? Yes, you did. No, you didnt. You did not work. Did you work? Did you not work? Yes, we did. No, we didn

14、t. They did not work. Did they work? Did you they not work? Yes, they did. No, they didnt. 2. 一般过去时的基本用法： （1）带有确定的过去时间状语时，要用过去时。（eg: yesterday, last year, just now, two days ago, in the old days等） eg: He left just now. Lei Feng was a good soldier. 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