一般现在时试讲

一般现在时（The Simple Present Tense）

一、概述

一般现在时表示习惯性、经常性、反复性的动作或存在的状态。“习惯性、经常性、反复性”是一般现在时的三大特性，它不表示特定时间内发生的事。

1.经常性或习惯性的动作或状态。

常与表示频率的时间状语 [often, always(总是), sometimes, usually, every day/ week/year(每天/周/年)]连用。

每天早晨起床，刷牙，洗脸，上学，一星期去几次超市或书店等（有的有规律，有的偶尔几次）

e.g. I always get up at 6:30.

Sometimes he goes to school by bike.

Mike reads English every day.

2. 表示主语具备的性格，能力，特征等： e.g. She likes rabbits.

They speak English.

The sky is blue

3.普遍真理、自然规律以及名言警句：

e.g. The moon goes around the earth. （月球绕着地球转）

The sun rises in the east and sets in the west.

Summer follows Spring

Knowledge is power .

二、一般现在时的结构

1. be 动词的一般现在时的句式： 主语+be(am,is,are) +其他（n/adj等做表语）

e.g. I am a boy. I am a teacher

2. 实义动词的一般现在时句式：

① 主语（I/We/You/They/复数）+实义动词+其他

e.g. We often go swimming on the weekend .

② 主语（He/She/It/三单）+实义动词三单形式+其他

e.g. she always watches TV in the evening.

Sandy often ________ his homework on Sundays .

三、一般现在时的一般疑问句和否定句

1. 含be动词的句子：

① 否定句：主语+be+ not+表语

e.g. He is not a worker.

② 一般疑问句：Be+主语+表语?

e.g. Is he a worker? Yes, he is./No, he isn’t.

2. 含实义动词的句子：

 当主语不是第三人称单数时，一般疑问句在句首加Do，否定句在动词前加don’t。

 当主语为第三人称单数时，用does来帮助提问与否定，这是谓语动词要还原为动词原形。

① 否定句：主语＋ don't( doesn't ) ＋ 动词原形( 其它)。如：

e.g. I don't like bread. He doesn't come from Canada.

② 一般疑问句：Do( Does ) ＋ 主语 ＋动词原形＋ 其它。

如： e.g. - Do you often play football? - Yes, I do. / No, I don't.

- Does she go to work by bike? - Yes, she does. / No, she doesn't.

四、主语是第三人称的单数时，谓语动词的变化规律

在一般现在时中，当主语为第三人称单数时，谓语动词要用第三人称单数形式。

可以简单叙述为“主语为三单，其后动词s添 ”。何谓第三人称单数？用一句话概括就是“非你、非我、非复数”。 如he, my sister, our English teacher, Tom, Liu Jia, China, my book, etc.

e.g. He sometimes goes to school by bike.

e.g. My father works in the hospital.

五、动词第三人称单数的构成

动词第三人称变化的规则与可数名词复数变化的规则相同，分为规则变化和不规则变化两种。

1．动词第三人称单数的规则变化

① 一般在词尾加-s。如：looks, puts. reads, see, skis等。

② 以-o, -s, -x, -sh, -ch结尾的加-es。

如：goes, does, fixes mixes，washes teaches,等。

③ 以辅音字母加y结尾的，变y为i，再加-es。注意一定是辅音字母加y才变，若是元音字母加y，则直接加-s。

如：fly → flies, study → studies / buy → buys, say play—plays

2. 动词第三人称单数的不规则变化有一个，have → has。

六、动词三单小结口诀：

主语若是他她它，谓语动词有变化。

五种形式是一家，es加上做尾巴。(注：以-o , -s, -x, -sh, -ch结尾的) ，

have结尾是ve， s来把ve替。

其他形式最好记，加上s要注意。

巩固练习

1.写出下列动词的三单形式

→ says

go__________ catch_________ brush（刷）_____ like________

have___________ watch________drink ___________ learn ___________

make __________ look ____ pass__________

二、用括号内动词的适当形式填空。

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) the World Cup?

6. What _______they often _______(do) on Saturdays?

7. _______ your parents _______(read) newspapers every day?

8. The girl _______(teach) us English on Sundays.

9. She and I ________(take) a walk together every evening

11. They _______(have) the same hobby

12. You always _______(do) your homework well.

13. She _______(go) to school from Monday to Friday.

14. Liu Tao _______(do) not like PE

15. Su Hai and Su Yang _______(have) eight lessons this term.

16.Bill speaks Japanese. He ________________(not speak) Chinese.

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 is at home now.(改为否定句)

5. We go to school every morning.(改为否定句)

6. He wants some cakes.(改为否定句)

9. She is a good student.(改为一般疑问句，作否定回答)

10. Simon and Daniel like going skating.(改为否定句)

四、改错

1.Lily and Lucy doesn’t want to clean the blackboard.

2.Mr Green likes work in China very much.

3.My mother often go to the shop on Sundays.

4.She doesn’t likes bread or cakes.

5.Where is Jim and Kate now?