A 篇章学习:朗读对话，回答问题
Cindy: Hello, John. What are you doing now? Are you watching TV?
John: No, I'm not watching TV. I am cooking lunch for my parents right now.
Cindy: Wow! You're so great! But what are your parents doing? Aren't they at home?
John: They are sleeping now. They were still working at 1:00 this morning.
Cindy: Oh, by the way, I didn't see Amy in the park this morning. Do you know what she was doing? Was she sleeping then?
John: No, she wasn't. She was writing a novel at that time,so she wasn't playing outside.
B 语法聚焦1: 过去进行时和现在进行时的比较
过去进行时表示过去某一时刻正在进行的动作，或过去某一阶段一直进行的动作。
基本结构：be的过去式（was / were）+动词-ing
现在进行时表示说话时正在进行的动作或现阶段一直在进行的动作。
基本结构：be的现在式（am / is / are）+动词-ing
练习1 在空格中填入be 动词的正确形式。
1 I _____________ watching TV now.
2 He _____________ doing his homework at that time.
3 My father _____________ not washing his socks at 8:00 last night.
4 Look! They _____________ flying a kite in the park.
5 She _____________ not reading books right now.
C 语法聚焦2: 肯定句和否定句的比较
小贴士
现在进行时标志性的时间状语有：now, at this moment, at present,these days等，还有两个动词标志：look, listen。
过去进行时标志性的时间状语有：at that time, at this time yesterday,at 8:00 yesterday evening, when, then等。
练习2 按要求改写下列句子。
1 Listen! They are having a music class right now. （改为否定句）(www.xing528.com)
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2 Miss Green was reading this book at 9:00 last night. （改为否定句）
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3 He wasn't making a snowman with Tom at that time.（改为肯定句）
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4 The cat isn't drinking water now.（改为肯定句）
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D 语法聚焦3:一般疑问句和特殊疑问句的比较
练习3 选择合适的答语。
单元练习
练习4 单项选择。
1 ( ) Look! A fat cat ________ a mouse now.
A. caught B. is catching C. was catching
2 ( ) Who ________ at the door at 6:00 yesterday morning?
A. knocks B. is knocking C. was knocking
3 ( ) My father ________ TV and my mother ________ the floor right now.
A. is watching; is sweeping
B. watches; sweeps
C. watched; sweeps
4 ( ) ________ your grandpa ________ newspaper at this time yesterday?
A. Is; reading B. Did; reading C. Was; reading
练习5 按要求改写下列句子。
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