单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,动词,形式,原形,三单式,现在,分词,过去式,-ed,过去,分词,-ed,do,does,doing,did,done,.,*,动词原形三单式现在过去式过去dodoesdoingdiddo,1,系动词,也叫连系动词。系动词本身有含义，但它不能单独做谓语，后面必须接表语，用来说明主语的状况、性质、特征等。,一起构成主系表结构。,你还记得什么是表语吗？,表语：由形容词、名词、介词短语担任,.,*,系动词也叫连系动词。系动词本身有含义，但它不能单独做谓语，后,2,系动词,be动词,：最常用的系动词,She,is,beautiful.,I,am,a student.,They,are,in the classroom.,表示感受的“,感官动词,”：look,taste,smell,sound,feel感官动词+adj.：He,feels,cold.,become,turn,get,.,*,系动词be动词：最常用的系动词.*,3,Be动词用法口诀,I,是am,you是are,is 前面三个他（她，它）,其它复数都用are,am,is was过去式/,/,are were过去式/,/,.,*,Be动词用法口诀I是am,you是are,.*,4,情态动词,情态动词表示说话人情绪、态度和语气。,本身有词义，但词义不完全，不能单独作谓语，其后接,动词原形,一起构成谓语。,常见的有can(could),may(might),will(would),shall(should),must,have to,had better,注意,情态动词v.原,.,*,情态动词情态动词表示说话人情绪、态度和语气。注意.*,5,情态动词,情态动词没有人称和数的变化,He,can,speak English.,He,speaks,English very well.,.,*,情态动词情态动词没有人称和数的变化.*,6,情态动词详解,can表示个人能力所及或可能性,may表示允许、请求及可能性。用may提问，肯定回答一般是Certainly.或Yes,you may.否定回答一般用cant,mustnt,must表示必须、一定是(must be),.,*,情态动词详解can表示个人能力所及或可能性.*,7,例释,I can make kites.,That cant be Mr.Baker.,-May I ask you a question?,-Certainly.,Your glasses may be in your pocket.,We must be careful when we cross the road.,-Wheres Alex?-He must be at home.,.,*,例释I can make kites.*,8,must 问句的回答,must 表示“必须”的问句，肯定回答用must,否定回答用neednt.,Must we clean the classroom this afternoon?,Yes,you must.,No,you neednt.,No,you dont have to.,.,*,must 问句的回答must 表示“必须”的问句，肯定回答,9,had better 最好做,had better+v.原,had better not+v.原,We had better go back to the station now.,Youd better not speak because the baby is sleeping.,.,*,had better 最好做had better+v.,10,shall,shall 常用于第一人称，用在问句中表示：征求意见,Shall we go to the supermarket this weekend?,.,*,shall shall 常用于第一人称，用在问句中表示：征求,11,should,should 表示“应该”,We should speak to the old people politely.(adv.有礼貌地）,.,*,should should 表示“应该”.*,12,need,1.实义动词：放在肯定句、疑问句和否定句中,need+sth.,need to do sth.,We need more chairs.,We need to plant more trees.,2.情态动词：放在疑问句和否定句中,You neednt do it in such a hurry.,.,*,need1.实义动词：放在肯定句、疑问句和否定句中.*,13,助动词,协助主要动词构成谓语的动词叫助动词，它对谓语动词起辅助作用。被协助的词叫主要动词。助动词本身没有含义，不可单独使用。,常见助动词：be,do(does,did),shall,will,have(has),Tom,doesnt like,watermelons.,.,*,助动词协助主要动词构成谓语的动词叫助动词，它对谓语动词起辅助,14,助动词的使用,助动词本身没有意义，它只是帮助主要动词构成谓语，表示问句、否定句、时态等。,1、表示时态,We will sing and dance at the party.,2、构成疑问句,Do you like collecting stamps?,Did you study Chinese before you came to China?,3、与not合用，构成否定句,I dont want to visit that farm.,They havent finished the work yet.,.,*,助动词的使用助动词本身没有意义，它只是帮助主要动词构成谓语，,15,助动词do,根据时态、主语人称、数的变化，do/does/did,一般现在时：do,does(用于第三人称单数)，do用于其他人称，,一般过去时:did,I,do,nt like English.,He,does,nt,do,his homework at night.,We,did,nt clean the room yesterday.,注意,do,does,did+v.原,.,*,助动词do根据时态、主语人称、数的变化，do/does/,16,Exercise,我们是同班同学。,他是我的同班同学。,我是他的同班同学。,.,*,Exercise 我们是同班同学。.*,17,We are classmates.,He/She is my classmate.,I am his/her classmate.,.,*,We are classmates.*,18,