现在进行时情况下，动词的现在分词构成规律（规则变化）具体如下：

1.一般情况下，直接在动词词尾加ing，如：

work—working,sleep—sleeping,study—studying

2.如果动词以不发音的e结尾，则要把动词的词尾e去掉加ing，如：

take—taking,make—making,dance—dancing

3.如果动词是重读闭音节形式结尾，则双写这个动词的词尾再加ing，如：

cut—cutting,put—putting,begin—beginning

练习题

1.It's nine o'clock.My father______(work)in the office.

2.Look,the boy_______(put)the rubbish into the bin.

3.—______he______(clean)the classroom?

—No,he isn't.He______(play).

4.—Where is Make?

—He______(run) on the grass.

5.Look!The boy______swim with his mother in the pool.

6.Listen!She_____in the classroom.

A.is singing

B.sing

C.to sing

D.is sing

7.Today Jim______his white shirt and brown trousers.

A.is putting on

B.wear

C.put on

D.is wearing

8.They _____TV in the evening.They do their homework.

A.are watching

B.can't watching

C.don't watch

D.don't watching

9.The children______football.

A.is playing

B.are playing

C.play the

D.play a

10.The twins______their mother do the housework.

A.are wanting

B.help

C.are helping

D.are looking N8pO0AW5xZayfJ4pYFTXqk14VHGT8GjJPgJKnUAz5/2Uatr78JTCVlluHmC52Xa6