动词加ing的变化规则
1.一般情况下，直接加ing,如：cook-cooking
2.以不发音的e结尾，去e加ing,如：make-making, taste-tasting
3.如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing,如：run-running, stop-stopping
现在进行时专项练习：
一、写出下列动词的现在分词：
play________ run__________ swim _________make__________
go_________ like________ write________ _ski___________
read________ have_________ sing ________ dance_________
put_________ see________ buy _________ love____________
live_______ take_________ come ________ get_________
stop_________ sit ________ begin________ shop___________
二、用所给的动词的正确形式填空：
1.The boy __________________ （ draw）a picture now.
2. Listen .Some girls _______________ （ sing）in the classroom .
3. My mother _________________ （ cook ）some nice food now.
4. What _____ you ______ （ do ） now?
5. Look . They _______________（ have） an English lesson .
6.They ____________（not ,water） the flowers now.
7.Look! the girls ________________（dance ）in the classroom .
8.What is our granddaughter doing? She _________（listen ） to music.
9. It's 5 o'clock now. We _____________（have）supper now
10.______Helen____________（wash ）clothes? Yes ,she is .
三、句型转换：
1. They are doing housework .（分别改成一般疑问句和否定句）
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2.The students are cleaning the classroom . （ 改一般疑问句并作肯定和否定回答）
3.I'm playing the football in the playground .（对划线部分进行提问）
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4.Tom is reading books in his study . （对划线部分进行提问）
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