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四年上册英语现在进行时

发布时间:2013-10-05 12:36:17  

Unit 2 What are you doing ?

现在进行时:表示正在发生或进行的动作或事情。

(一)句子结构:主语+be ( is , am , are )+动词ing

巧记:我(I)用am,你(you)用are,is连着她(she)、他(he)、它(it),单数is,复数are。

I am

You are

We are

They are

He is

She is

(二)动词ing的变化(现在分词的变化)

1、一般情况,在动词末尾加ing。

2、以不发音的e为结尾的动词,去掉e再加ing。(但是be,see不能去掉,因为e发音)

3、以重读的闭音节结尾,且末尾只有一个辅音字母的动词,先双写这一辅音字母,再加ing。

现在进行时:表示正在发生或进行的动作或事情。

(一)句子结构:主语+be ( is , am , are )+动词ing

巧记:我(I)用am,你(you)用are,is连着她(she)、他(he)、它(it),单数is,复数are。

I am

You are

We are

They are

He is

She is

1、I am watching TV now .

2、What are they doing ? They are playing .

What are you doing ? I am shopping .

What are you doing ? We are shopping .

What is she doing ? She is sleeping .

What is he doing ? He is sleeping .

3、

<1>What are they doing ? They are playing .

They are not playing.

Are they playing ?

Yes , they are . / No, they aren't .

<2>What are you doing ? I am shopping . I amn't shopping . Are you shopping? Yes , I am . / No, I amn't .

<4>What is she doing ? She is sleeping . She isn't sleeping . Is she sleeping ? Yes , she is . / No , she isn't . <3>What are you doing ? We are shopping . We aren't shopping. Are you shopping? Yes , we are . / No, we aren't . <5>What is he doing ? He is sleeping . He isn't sleeping . Is he sleeping ? Yes , he is . / No , he isn't .

(二)动词ing的变化

1、一般在动词后加ing。

play玩 playing正在玩 do doing laugh laughing eat吃 eating正在吃 read reading

study学习 studying正在学习 sing singing

sleep睡觉 sleeping正在睡觉 fish fishing

paint绘画 painting正在绘画 draw drawing

2、去掉末尾不发音e,再加ing,但是(be,see)不能去掉,因为e发音。 ( see seeing )

write写 writing正在写 have having ride riding

dance dancing

smile smiling

3、以重读闭音节结尾的动词,要双写最后一个辅音字母再加ing。

shop购物 shopping正在购物 swim swimming

run跑步 running正在跑步

以t结尾 以m,n结尾 以p结尾 以g结尾

sit sitting 坐 swim swimming游泳 shop shopping购物 dig digging挖 cut cutting 剪 run running跑步 stop stopping停 jog jogging慢跑

put putting 放 skip skipping跳绳 get getting 得到 clap clapping拍掌 drop dropping掉下

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