小升初专项：一般现在时.doc

专项：一般现在时三单变化：1.多数在动词后s play plays like likes2以s ,x ,sh ,ch , o 结尾的es, go goes wash washes 3以辅音字母加y结尾，把y改成i 再加 es fly flies cry cries在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。但有些同学们对于哪些主语是第三人称单数还不十分清楚，现归纳总结如下： 一、人称代词he, she, it是第三人称单数。如： He likes watching TV. 他喜欢看电视。 She has lunch at twelve. 她十二点吃午餐。 It looks like a cat. 它看起来像只猫。 二、单个人名、地名或称呼作主语；是第三人称单数。如： Han Mei looks like her mother. 韩梅看起来像她的母亲。 Beijing is in China. 北京在中国。 Uncle Wang often makes cakes. 王叔叔经常做蛋糕。 三、单数可数名词或this / that / the+单数可数名词作主语时，是第三人称单数。如： A horse is a useful animal. 马是有用的动物。 This book is yours. 这本书是你的。 That car is red. 那辆小汽车是红色的。 The cat is Lucys. 这只猫是露茜的。 四、不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数。如： Everyone is here. 大家到齐了。 There is something wrong with the watch. 这块手表有毛病。 This is a pen. 这是一支钢笔。 That is an eraser. 那是一块橡皮擦。 五、不可数名词作主语时为第三人称单数。如： The milk is in the glass. 牛奶在玻璃杯里。 The bread is very small. 那面包很小。 六、当数字或字母作主语时，看作第三人称单数。如： 6 is a lucky number. 6是个吉利数字。 I is a letter. I是个字母。Hello, boys and girls.我是一般现在时，你们想知道我的故事吗？Let me tell you!首先，介绍我的本领。我的本领有三样：1.表示事物或人物的特征、状态。如：The sky is blue.天空是蓝色的。2.表示经常性或习惯性的动作。时间状语always, usually,regularly,every morning/night/evening/day/week,often,sometimes,occasionally,from time to time,twice a week,rarely,seldom,once a month, hardly, ever,never.如：I get up at six every day.我每天六点起床。3.表示客观现实和普遍真理。如：The earth goes around the sun.地球绕着太阳转。Shanghai lies in the east of China第二，请看我的面目-构成：1. be动词：主语+be(am,is,are)+其它。如：I am a boy.我是一个男孩。2.行为动词：主语+行为动词(+其它)。如：We study English.我们学习英语。当主语为第三人称单数(he, she,it)时，要在动词后加-s或-es。如：Mary likes Chinese.玛丽喜欢汉语。第三，我的变化-否定句、一般疑问句、特殊疑问句：1. be动词的变化。否定句：主语+ be + not +其它。如：He is not a worker.他不是工人。 一般疑问句：Be +主语+其它。 如：-Are you a student? -Yes. I am. / No, Im not.特殊疑问句：疑问词+一般疑问句。如：Where is my bike?2.行为动词的变化。 否定句：主语+ dont( doesnt ) +动词原形(+其它)。如： I dont like bread. 当主语为第三人称单数时，要用doesnt构成否定句。如： He doesnt often play. 一般疑问句：Do( Does ) +主语+动词原形+其它。如： - Do you often play football? - Yes, I do. / No, I dont. 当主语为第三人称单数时，要用does构成一般疑问句。如： - Does she go to work by bike? - Yes, she does. / No, she doesnt.4）一般现在时判断依据（如何判断一个句子是一般现在时）：be动词是am、is、are动词用原形或加s、es没有时间状语或有usually、often、everyday、sometimes等不是具体的时间4、常用标志词（时间状语）：always, every week (day, year, month), once a week, every, sometimes, at, on Sunday uauslly often,never,hardly.随堂练习一、写出下列动词的第三人称单数形式。(讨论第三人称单数形式的变化规则)Model: clean cleans1) watch _ 2) have _ 3) cook_ 4) go _ 5) fly _ 6) make _ 二用动词的正确形式填空。1. We often_(play) in the playgound.2. He _(get) up at six oclock.3. _you _(brush) your teeth every morning.4. What_(do) he usually_(do) after school?5. Danny_(study)English,Chinese,Maths, Science and Art an school.6. Mike sometimes _(go) to the park with his sister.7. At eight at night, she _(watch) TV with his parents.8. _ Mike_(read) English every day?9.Tom _ (swim) in the river now.10.Its eight oclock now. The boys _ (watch) TV.11.She usually_(do) her homework in the evening.12.Tom and Tony cant _ (swim).13.What does your father _ (do)? Hes a worker.14.Look! Jim and Tom (run) there.15. He often _(have) dinner at home.三改句子1. Daniel watches TV every evening.(改为否定句)_2. I do my homework every day.(改为一般疑问句，作否定回答)_3. She likes milk.(改为一般疑问句，作肯定回答)_4. Amy likes playing computer games.(改为一般疑问句，作否定回答)_5. We go to school every morning.(改为否定句)_6. He speaks English very well.(改为否定句)_7.