1、一般现在时讲解, 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。 二、单个人名、地名或称呼作主语；是第三人称单数。如： Han Mei likes salsd . 韩梅喜欢萨拉。 Beijing is in China. 北京在中国。 Uncle Wang often plays vol
2、leyball 王叔叔经常打排球。 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： This book is yours. 这本书是你的。 That car is red. 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。Everyone is here. 大家到齐了。 There is a watch on the table. 桌上有块手表。 This is a pe
3、n. 这是一支钢笔。That is an eraser. 五、不可数名词作主语时为第三人称单数。如：,1. 一般现在时的基本用法：,1) 经常性或习惯性的动作，常与表示频率副词的时间状语连用。 通常与副词every day（每天），always（总是）,usually（通常）,often（经常）sometimes（有时）,等时间状语连用。 例：（1）表示事物或人物的特征、状态。例如： I wake up at six Oclock every morning. My friends often go to the park on Sundays.,2) 用于表示客观真理，客观存在，科学事实。
4、例如： The earth moves around the sun. 地球绕着太阳转。 Tomorrow is Tuesday. 明天是星期二,3) 用于格言或警句中。 例如： Where there is a will, there is a way.有志者事竟成。 4) 用于表示现在时刻的状态、能力、性格、个性。 例如： She is a good girl and always help others.她是一个好女孩，经常帮助别人。 My watch is very new。我的手表很新。,2. 一般现在时的构成： 当主语是第一人称，第二人称或第三人称复数时，谓语动词要用动词原形。 当
5、主语是第三人称单数时，谓语动词要用第三人称单数形式, 动词三单形式的变化规则： 1.（1）多数直接在动词词尾加-s. play plays like likesask-asks work-works get-gets call-calls （2）以字母s, x, ch, sh或o结尾的动词，在词尾直接加-es. watch-watches wish-wishes do-does go-goes,（3）以“辅音字母加 - y”结尾的动词，要先变y为i再加-es.try-tries study-studies cry-cries fly-flies 2.不规则变化：be- is have-has,
6、3. 一般现在时的句子转换：,（1） 当句子中有be动词或情态动词时，则把be动词或情态动词提到主语的前面变成疑问句;在be动词或情态动词后面加not变成否定句. （2） 当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do, does变成问句；在主语后谓语动词前加助动词dont, doesnt变成否定句，助动词后的谓语动词要变成动词原形。,一般现在时态专练,二、用Be动词填空。 1. you Li Fen ? No,I not . 2. Mr. green very busy? Yes , he . 3This book very interesting . 4. What cl
7、ass you in ? 5. You and I good friends . 6. The basketball club fun .,一、 用括号中所给词的适当形式填空； 1I often _ (go) swimming on Sunday. 2My daughter _ (watch) TV every day. Sometimes she _ (see) a film on Sunday.3Li Wei _ (have) a daughter. 4Her mother _ (teach) English at a middle school.5Jack often _ (listen
8、) to the radio.6He _ (say) that Li Lei is tired.,go,watches,sees,have,teaches,listens,says,二、用括号内动词的适当形式填空。 1. He often _(have) dinner at home. 2. Daniel and Tommy _(be) in Class One. 3. We _ _(not watch) TV on Monday. 4. Nick _ _(not go) to the zoo on Sunday. 5. _ they _(like) pears? 6. _ your pare
9、nts _(have) eggs every day? 7. There _(be) some water in the bottle. 18. Mike _(like) cooking. 9. They _(have) the same hobby. 10. Liu Tao _ _(do) not like PE. 11. This boy often _(watch) TV in the evening.,二、将下列句子变成否定式和疑问式：1We go to school at night.2My brother works in a factory.3Her name is Mei Li
10、ng.,We dont go to school at night.Do you go to school at night?,My brother doesnt work in a factory. Does your brother work in a factory?,Her name isnt Mei Ling. Is her name Mei Ling?,4You have got a red pencil.5She has lunch at home.,You havent got a red pencil. Have you got a red pencil?,She doesn
11、t have lunch at home. Does she have lunch at home?,三、按照要求改写句子 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. John comes from Canada（加拿大）.(对划线部分提问) _ 7. She is a good student.(改为一般疑问句，作否定回答) _,
