人教版八年级下册英语 Unit 3 Could you please clean your room 单元语法及练习（含答案）

Unit 3 Could You Please Clean Your Room 单元语法
一、语法知识聚焦
（一）情态动词 could 的用法
1. 礼貌请求：
结构：Could + 主语 + 动词原形 + 其他？
例句：
Could you please pass me the salt （你能把盐递给我吗？）
Could I borrow your dictionary （我可以借你的词典吗？）
回答：
肯定：Yes, of course. / Sure, here you are.
否定：Sorry, I’m using it now.
2. 过去的能力：
例句：When I was six, I couldn’t swim, but now I can.（我六岁时不会游泳，但现在会了。）
3. 委婉建议：
结构：You could + 动词原形 + 其他。
例句：You could ask your teacher for help.（你可以向老师求助。）
（二）祈使句的结构与使用
1. 肯定祈使句：
动词原形开头，省略主语。
例句：Clean your room now.（现在打扫你的房间。）
2. 否定祈使句：
Don’t + 动词原形 + 其他。
例句：Don’t leave the lights on.（别让灯开着。）
3. 带客套语的请求：
结构：Please + 动词原形 / 动词原形 + please。
例句：Please take out the trash. / Close the door, please.
（三）现在进行时表示当前活动
1. 结构：am/is/are + 动词现在分词（-ing）。
例句：
I’m washing the dishes right now.（我正在洗碗。）
She is sweeping the floor.（她正在扫地。）
2. 与家务活动结合：
常用短语：do the laundry（洗衣服）, fold clothes（叠衣服）, mop the floor（拖地）。
（四）动词短语与家务表达
1. 常见家务动词短语：
take out the trash（倒垃圾）
make the bed（整理床铺）
water the plants（给植物浇水）
cook dinner（做晚饭）
2. 请求帮助的句型：
Could you help me + 动词原形？
例句：Could you help me carry these boxes （你能帮我搬这些箱子吗？）
二、学以致用
（一）动词填空
1. — ______ you please ______ (clean) the windows
— Sure, I’ll do it later.
2. ______ (not forget) to turn off the TV before leaving.
3. My mom asked, “______ I ______ (use) your laptop for a minute ”
4. — ______ you ______ (cook) dinner yesterday
— No, I ______ (order) pizza instead.
5. ______ (be) quiet! The baby is sleeping.
（二）句型转换
1. “Could you pass me the book ” she asked.（改为间接引语）
→ She asked ______ pass her the book.
2. Don’t leave your shoes here.（改为肯定句）
→ ______ your shoes here.
3. He is washing the car now.（对划线部分提问）
→ ______ is he ______ now
4. You should finish your homework first.（用could改写为建议句）
→ You ______ finish your homework first.
（三）语法填空
Last weekend, my family 1. ______ (decide) to have a big cleaning day. My dad 2. ______ (say), “Could everyone 3. ______ (help) with the chores ” First, I 4. ______ (sweep) the floor, and my sister 5. ______ (mop) it. My mom 6. ______ (cook) lunch while 7. ______ (sing) her favorite song. Suddenly, the phone 8. ______ (ring). It 9. ______ (be) my aunt. She asked, “Could I 10. ______ (join) you ” We all laughed and said yes!
（四）阅读理解
A Busy Saturday Morning
It was 8 a.m. on Saturday. Lisa’s mom shouted, “Could everyone come downstairs We need to clean the house!” Lisa groaned but slowly got up. Her brother Jake was already in the kitchen, making pancakes. “Could you stop cooking and help me vacuum ” Lisa asked. Jake replied, “Sure, but let me finish these first.” Meanwhile, their dad was fixing a broken chair in the garage. By noon, the house sparkled, and they all sat down to enjoy Jake’s pancakes.
1. What time did Lisa’s mom call everyone
A. 7 a.m.
B. 8 a.m.
C. 9 a.m.
2. What was Jake doing when Lisa asked for help
A. Vacuuming.
B. Making pancakes.
C. Fixing a chair.
3. Where was Lisa’s dad working
A. In the kitchen.
B. In the garage.
C. In the living room.
4. How did the house look by noon
A. Dirty.
B. Sparkling.
C. Half-clean.
5. What did they eat after cleaning
A. Pizza.
B. Pancakes.
C. Sandwiches.
（五）翻译句子
1. 你能帮我倒垃圾吗？
→ ______
2. 请不要在房间里大声说话。
→ ______
3. 我妈妈正在整理床铺。
→ ______
答案
（一）动词填空
1. Could; clean
2. Don’t forget
3. Could; use
4. Did; cook; ordered
5. Be
（二）句型转换
1. if I could
2. Leave
3. What; doing
4. could
（三）语法填空
1. decided
2. said
3. help
4. swept
5. mopped
6. was cooking
7. singing
8. rang
9. was
10. join
（四）阅读理解
1. B
2. B
3. B
4. B
5. B
（五）翻译句子
1. Could you help me take out the trash
2. Please don’t talk loudly in the room.
3. My mom is making the bed.