现在进行时(一)
▶定义:现在进行时表示现在(说话瞬间)或现阶段正在进行或发生的动作。
▶结构
①肯定句:主语+be+动词-ing形式+其他.
②否定句:主语+be+not+动词-ing形式+其他.
③一般疑问句:Be+主语+动词-ing形式+其他?
肯定回答:Yes,主语+be.
否定回答:No,主语+be+not.
④特殊疑问句:特殊疑问词+be+主语+动词-ing形式+其他?
▶用法
①表示现在(说话瞬间)正在进行或发生的动作。
如:He is reading a newspaper now.他现在正在看报纸。
②表示当前一段时间内的活动或现阶段正在进行的动作。
如:They are working on the farm these days.这些天他们在农场干活。
▶时间标志
现在进行时的标志词常有now,look,listen等。
▶动词-ing形式的构成
①一般直接在动词原形末尾加-ing。
如:play→playing;read→reading
②以不发音的字母e结尾的动词,先去掉e,再加-ing。
如:come→coming;write→writing
③以重读闭音节结尾的动词,且词尾只有一个辅音字母,变动词-ing形式时,应双写该辅音字母再加-ing。
如:shop→shopping;get→getting;
sit→sitting;run→running

答案略

一、写出下列动词的-ing 形式。
1.paint
2.study
3.make
4.swim
5.brush
6.bring
7.cut
8.carry
9.jog
10.practise

1.painting 2.studying 3.making 4.swimming 5.brushing 6.bringing 7.cutting 8.carrying 9.jogging 10.practising

二、根据句意,用括号中所给单词的适当形式填空。
11.Look! Tom (run) on the playground.
12.Be quiet, Kate! I (talk) on the phone.
13.Mr Miller (write) a book these days.
14.Jim and John (do) their homework in the classroom.
15.It's 9:20 a.m.The students (have) an English class.

11.is running 12.am talking 13.is writing 14.are doing 15.are having

三、按要求完成下列句子。每空一词。
16.Mary is playing the piano.(改为否定句)
Mary the piano.
17.They are playing Chinese chess over there.(改为一般疑问句)
playing Chinese chess over there?
18.Is Alice drawing pictures?(作否定回答)
, she .
19.Her brother is exercising at the park.(对画线部分提问)
her brother at the park?
20.我们正在餐厅吃早餐。(翻译句子)
We in the dining hall.

16.isn't playing 17.Are they 18.No;isn't 19.What is;doing 20.are having breakfast