一、写出下列单词的现在分词：

　　Play___ sit___ buy___ begin___ take___ listen___

　　Sing___ swim___ put___ have___ see____ shop___

　　Stop___ dig____ run____

　　二、按要求改写句子

　　1. The boy was playing basketball.

　　否定句：____________________________

　　一般疑问句：_________________________

　　肯定回答：__________________________否定回答：______________________

　　2.She was closing the door now.

　　否定句：____________________________

　　一般疑问句：_________________________

　　3.I was doing your homework.

　　否定句：____________________________

　　一般疑问句：_________________________

　　.The Young Pioneers were helping the old woman.

　　否定句：____________________________

　　一般疑问句：_________________________

　　三、用过去进行时完成下列句子:

　　1.What_________you__________(do)?

　　2.I_____________(sing) an English song.

　　3.What________he____________(mend)?

　　4.He______________(mend) a car.