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1、助动词的用法总结及讲解一.助动词:情态助动词,基础助动词助动词的定义:助动词和情态动词都是英语中特殊动词,即:不能再句子中独立充当句子成分。而是与实义动词一起使用构成复合用语。常配合主要动词,协助构成否定句,疑问句,强调句,时态,语态等语法形式。基础助动词有:be,do情态助动词基本用法总结:情态动词用法否定式疑问式与简答can能力(体力,智力,技能)允许或许可(口语中常用)cannot/cannot/can’tdoCan…do…?Yes,…can./No,…can’t.may可以(问句中表示请求)祝愿(用于倒装句中)maynotdoMay…do…?Yes,…may.No,…m
2、ustn’t/can’t.must必须,应该(表主观要求)肯定,想必(肯定句中表推测)mustnot/mustn’tdoMust…do…?Yes,…must.No,…needn’t/don’thaveto.shall用于一三人称征求对方意见shallnot/shan’tdoShall…do…?Yes,…shall.No,…shan’t.should应当,应该(表义务责任)shouldnot/shouldn’tdoShould…do…?will意愿,决心请求,建议,用在问句中would比较委婉willnot/won’tdoWill…do…?Yes,…will.No,…won’t.
3、wouldwouldnot/wouldn’tdo二.助动词的功能助动词协助主要动词完成以下功用,可以用来: a.表示时态,例如: Whatareyoureading?(你正在阅读什么?) Iamreadingamagazine.(我正在阅读杂志。)Heissinging. 他在唱歌。Weareworkinghardinthegarden.(构成现在进行时) b.构成疑问句,例如: Doyoulikecollegelife? 你喜欢大学生活吗?DoyouliveinShanghai? c.与否定副词not合用,构成否定句,例如: Idon'tlikehim. 我不喜
4、欢他。 3助动词练习一.把下列句子变为一般疑问句。公式:助动词+主语+句子剩余部分。1.Itisalovelydog.________________________________________2.Sheisalovelygirl.________________________________________3.Weareclassmates.______________________________________4.Iamadoctor.________________________________________5.Thereisabirdinthetree
5、.________________________________6.Theyaregoodfriends.____________________________________7.Ilovemyparents._______________________________________9.Wehaveapleasanthome._______________________________10.TheygotochurchonSunday._____________________________11.Youareasinger._____________________
6、_________二.用dodoesbe填空1._____sheknowalltheanswers?Yes,she____.No,she_____.2._____thetwinsoftenfight?Yes,_____do.No,_____don’t.3._____yourdadlikelisteningtomusic?Yes,____does.No,_____doesn’t.4._____youhaveanewteacher?Yes,I______.No,I______.5._____sheateacher?Yes,she_____.No,she_____.6._____yo
7、urfathersmokinginthelivingroom?Yes,____is.No,he_____.情态助动词练习一.将下面各组词组成句子(注意:标点符号) 1.________________________(an,aeroplane,hear,Lucy,can) 2.____________________________(not,he,dance,can) 3.____________________________?(you,can,see,what) 4.______