一般现在时.语法讲解PPT

1、一般现在时一般现在时、概念：、概念： 经常、反复发生的动作或存在的状态及经常、反复发生的动作或存在的状态及现在的某种状态。现在的某种状态。 1 、肯定式、肯定式 1)主语主语 + be (am/is/are)+表语表语 I am a student. It/ She/He is a teacher. You/They are classmates. 2)主语主语 +情态动词（情态动词（can, must, may, need, shall） I can speak English. She must go to school. 、构成形式、构成形式: 3)They call me Tom.4)

2、He runs very fast.注意：在一般现在时态的肯定句中，注意：在一般现在时态的肯定句中，当主语是第三人称单数（当主语是第三人称单数（she, he, it），），行为动词要加行为动词要加-s或者或者 es.2.一般现在时态的否定和疑问式一般现在时态的否定和疑问式(1).Be动词肯定句：She is a student. 否定句：She is not a student .一般疑问句：Is she a student ?肯定回答：Yes ,she is .否定回答： No ,she isnt.（2）.情态动词e.g. She can speak Chinese.否定句：She can

3、t speak Chinese.一般疑问句：Can she speak Chinese?肯定回答：Yes, she can. 否定回答：No, she cant.(3)行为动词1.e.g. I run very fast.否定句：I dont run very fast .一般疑问句：Do you run very fast ?肯定回答：Yes, I do. 否定回答： No, I dont.2.e.g. She likes Maths.否定句：She doesnt like Maths.一般疑问句：Does she like Maths?肯定回答：Yes, she does. 否定回答： N

4、o, she doesnt.注意：在一般现在时态中，当谓语动词是注意：在一般现在时态中，当谓语动词是行为动词的时候，变否定和一般疑问句时，行为动词的时候，变否定和一般疑问句时，要借助助动词要借助助动词dodo和和doesdoes帮忙。当主语是第帮忙。当主语是第三人称单数三人称单数(she, he, it)(she, he, it)的时候用的时候用doesdoes，其他人称用其他人称用do. do. 借助助动词借助助动词dodo和和doesdoes以后，以后，动词要用动词原形。动词要用动词原形。 、一般现在时态的用法：、表示目前或现在存在的状态或特征. e.g. She is often lat

5、e.、表示客观存在及普遍真理。 e.g. The earth is round.、表示现在经常和习惯性发生的动作，常与 sometimes, often, usually, always, everyday 等时间状语连用。、在时间状语从句中表示将来发生的动作。 e.g. If it doesnt rain tomorrow, well go to the park.、表示按时间或计划将要发生的动作，常与时 间状语连用，常用动词为： come, begin, go, leave, arrive, stop, start, return, E.g. Our holidays begin in a

6、 week. 、 就单词的正确形式填空1.He _ (look) tired. 2.The earth_ (go) round the sun.3. _ (may) I have your pen?4.Practice _ (make) perfect.5.They usually_ (come) to school earlier.6.Class_ (begin) at eight every morning.7.When he _ (come), well go out to meet him.8.How _(be) your father ?9.There _ (be) a school

7、 there.looksgoesMaymakescomecomesbeginsisis一、写出下列动词第三人称单数的变化形式写出下列动词第三人称单数的变化形式be have comego stay teach write take study watch fly play 、 Homework二、将下列句子变成否定式和一般疑问句 1Her name is Li Ling.2We go to school at night.3My brother works in a factory.Her name isnt We dont My三、单项选择 1. The Browns _ a nice ca

8、r and Browns brother _ a nice jeep. A. have, have B. has, has C. have, has D. has, have2. If their house _ not like ours, what_ it look like? A. is, is B. is, does C. does, does D. does, is3. - _ you think he will come? - If it _ tomorrow, he will not come. A. Do, rains B. Are, rains C. Do, will rain D. Are, will rain4. The little