什么时候用一般现在时?怎么用/

如题所述

一般现在时基本用法介绍

【No. 1】一般现在时的功能

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。如:I get up at six every day.我每天六点起床。

3.表示客观现实。如:The earth goes around the sun.地球绕着太阳转。

【No. 2】一般现在时的构成

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。

【No. 3】一般现在时的变化

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, I'm 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+ don't( doesn't ) +动词原形(+其它)。如:

I don't like bread.

当主语为第三人称单数时,要用doesn't构成否定句。如:

He doesn't 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 don't.

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 doesn't.

特殊疑问句:疑问词+一般疑问句。如:How does your father go to work?
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第1个回答  2007-01-01
一般现在时的用法

1) 经常性或习惯性的动作,常与表示频腮度的时间状语连用。
时间状语: every…, sometimes, at…, on Sunday
I leave home for school at 7 every morning.

2) 客观真理,客观存在,科学事实。
The earth moves around the sun.
Shanghai lies in the east of China.
3) 表示格言或警句中。
Pride goes before a fall. 骄者必败。

注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。
例:Columbus proved that the earth is round..

4) 现在时刻的状态、能力、性格、个性。
I don't want so much.
Ann Wang writes good English but does not speak well.
比较:Now I put the sugar in the cup.
I am doing my homework now.

第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时。

////////////一般现在时表将来

1)下列动词:come, go, arrive, leave, start, begin, return的一般现在时表将来。这主要用来表示在时间上已确定或安排好的事情。
The train leaves at six tomorrow morning.
When does the bus star? It stars in ten minutes.

2)倒装句,表示动作正在进行,如:
Here comes the bus. = The bus is coming.
There goes the bell. = The bell is ringing.

3)在时间或条件句中。
When Bill comes (不是will come), ask him to wait for me.
I'll write to you as soon as I arrive there.

4)在动词hope, take care that, make sure that等后。
I hope they have a nice time next week.
Make sure that the windows are closed before you leave the room.

参考资料:参考资料:http://www.hongen.com/eng/pub/yufac/1101.htm

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