小学一般现在时.doc
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1、如有侵权,请联系网站删除,仅供学习与交流小学一般现在时【精品文档】第 7 页一般现在时一、一般现在时的用法1表示经常的或习惯性的动作,常与表示频度的副词连用。常用的频度副词有: always、often、 usually、seldom、never、sometimes, every week (day, year, month), once a week, on Sundays。频度副词在句中通常放在行为动词之前,系动词、助动词之后。e.g. He often goes swimming in summer.他夏天经常游泳。I usually leave home for school at 7
2、 every morning. 每天早上我七点离开家。2表示现在的状态。e.g. My father is very busy now. 我父亲很忙。 The boy is twelve. 这男孩十二岁。3表示主语具备的性格、特征和能力等。e.g. All my family love football .我全家人都喜欢足球。Ann writes good English but does not speak well. 安英语写得不错,讲的可不行。4表示客观真理,客观存在,自然现象。e.g. The earth moves around the sun. 地球绕太阳转动。Shanghai l
3、ies in the east of China. 上海位于中国东部。二、动词的第三人称单数词尾变化当主语是第三人称单数时,谓语动词需加-s或-es:规则动词原形第三人称单数形式一般在词尾加-s,(清辅音后读s,在浊辅音后读z;在t后读ts,在d后读dz。)playleaveswimplaysleavesswims以字母s, x, ch, sh, o结尾的词加-es,读iz,如果动词原形词尾已有e,则只加-s。passfixteachwishdopassesfixesteacheswishesdoes以辅音字母加y结尾的词,先变y为i, 再加-es,读z。studycarryflystudie
4、scarriesflies注意:动词have的第三人称单数是has.三、一般现在时的句子转换:1)e.g. 陈述句:She is a student. 疑问句 Is she a student? Yes, she is./No, she isnt. 否定句 She is not a student. 陈述句:I can swim. 疑问句 Can you swim? Yes, I can. / No, I cant. 否定句 I can not swim.小结:当句子中有be动词或情态动词时,则把be动词或情态动词(can, could等等)提到主语的前面变成疑问句;在be动词或情态动词后面加
5、not变成否定句.2)e.g.陈述句:We get up at 7:00 every morning. 疑问句Do you get up at 7:00 every morning? 否定句We dont get up at 7:00 every morning. 陈述句:She has a little brother. 疑问句 Does she have a little brother? 否定句 She doesnt have a little brother. 小结:当句子中既没有be动词,也没有情态动词时,则在主语前加助动词do (you,以及复数), does(单数she, he,
6、 it)变成问句;在主语后谓语动词前加助动词dont(I, you ,以及复数), doesnt(单数she, he, it)变成否定句,助动词后的动词要变成动词原形。常见考点、典型例题与练习 练习: drink- go- stay-make- look- have- pass- carry- come-watch- plant- fly-study- brush- do-teach- swim- jump-walk- eat- copy-write plays- buy-小结:动词第三人称变化规则:一般情况下在单词后面加-s。 以s, x, ch, sh, o结尾的在单词后面加-es。以辅音
7、字母加-y结尾的,把y变i再加-es, 以元音字母加-y结尾的,直接加-s。have 的第三人称单数形式是has.练习:(一)选择题( )1._Aliceoftenplaythepiano.No,she_.A.Do;doB.Does;doesC.Does;doesnt( )2.-Whatdoyouusuallydoontheweekend?-I_.A.goesswimmingB.goswimmingC.visitinggrandparents( )3.I_astudent.Igotoschool_buseveryday.A.is;byB.am;onC.am;by( )4.Mymotherand
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