A. Tony is buying some fruits.

B. Lucy and Lily are doing their homework.

C. I am singing in the washroom.

D. They are playing football .

E. She is enjoying her visit.

3. 现在进行时: 肯定句 be doing

否定句 be not doing

一般疑问句，Be动词提前到句子开头

e.g I'm visiting my friends now.

He isn't writing a postcard.

Is she enjoying her visit?

Are they buying postcards?

句型转换: 1) She is watching a ballet. (变否定句)

She isn't watching a ballet.

2) We're waiting for our teacher. (变一般疑问句)

Are you waiting for your teacher?

3) Is Tony calling a friend? (作肯定问答)

Yes, he is.

4) They are lying in the sun. (画线提问)

What are they doing?

4. 常与现在进行时态连用的词:now, listen, look, it's +时间. 等。

如：What are you doing now? (你在干什么？)

I'm reading now. (我现在正在读书。)

Listen! She is singing. (听，她正在唱歌。)

Look! My parents are watering the flowers. (看,我的父母亲正在浇花.)

Step Two To look at the picture2 and answer the questions one by one

1. What is the boy doing? He is swimming in the sea.

2. What is the girl doing? She is cleaning the blackboard.

3. What are the students doing? They are dancing.

4. What are the boys doing? They are fishing.