现在进行时：表示现在正在发生的动作或存在的状态。通常与现在进行时连用的词有：Look (看),Listen (听), now (现在) , It’s seven o’clock等等
构成：be(am/is/are) + doing
He is playing tennis now.
*变一般疑问句：Be提到句首，加问号；
*变否定句：be+not；
*变特殊疑问句（也叫划线提问）：疑问词+be+其他+？
*some变否定句或疑问句变为any；
*I am 或 We are 变疑问句改为 Are you....;
* my 或 our改为 your。 E.g.
Tom is looking for his book. （否定句，一般疑问句，划线提问）
Tom isn't looking for his book.
Is Tom looking for his book?
Yes, he is. / No, he isn't.
What is Tom looking for? **动词-ing的变化形式** A. look--looking listen--listening
B. arrive--arriving like--liking
C. play--playing fly--flying
D. sit--sitting stop--stopping Exercise
动词-ing变化
请写出下列动词的-ing形式：
look _________ like __________ use ___________
do ________ go _________ ask _________ listen __________
come __________ help __________ tell ________ say ________
have ________ write _________ miss ________ call _________
guess ________ play _________ give __________ sit ________
begin _________ leave _________ fly ________ feed _________
read __________ get ________ run _________ meet _________
make _________ teach _________ take ________ sing ________
用所给单词的适当形式填空
1. Tom ___________ (play) football on the playground now.
2. Look ! He ___________ (look) for his pen.
3. Listen ! My sister ___________ (sing) a song in her room.
4. It's seven o'clock. We ____________ (have) lessons.
5. —— What ______ your father _______ (do) now ?
—— He ___________ (read) a book in the living room.
6. Please be quiet! The baby ____________ (sleep) in the room.
7. —— ______ your brother _________ (do) his homework?
—— Yes, he is.
改写句子 （否定，一般疑问，划线）
1. We are doing our homework in the classroom now.
2. My cousin is travelling to Sanya this weekend.
3. A boy is riding his bicycle in the park.
4. Peter and Danny are playing football.
5. The wind is blowing strongly.（划线）
6. I am looking for my book everywhere.
7. Kitty is talking to Laura on the Internet.
8. Alice is doing her homework carefully.
9. She is catching a fly.
10. Two little boys are dozing on the bench.
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