2025新人教版八年级英语上册Unit 2 Home Sweet语法及写作讲解学案
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| 名称 | 2025新人教版八年级英语上册Unit 2 Home Sweet语法及写作讲解学案 |  | |
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| 科目 | 英语 | ||
| 更新时间 | 2025-06-28 06:47:43 | ||
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2025新人教版八年级英语上册Unit2语法及写作讲解
一、语法解析：
情态动词can和could用法：can和could为情态动词，没有人称的变化，在句中位于行为动词前，不可单独使用。具体用法如下：
（1）表示能力：can表示现在和将来的能力；could表示过去的能力。
Eg: I can swim.
我会游泳。
Could you speak English then
那时候你会说英语吗？
（2）表可能性：can表示客观可能性；could表示可能性时，语气更加委婉。
Eg: That big cinema can seat 2,000 people.
那家大电影院能坐2000人。
He could be very friendly at times.
他有时会很友好。
（3）表示请求或许可：can和could都可以用于请求或许可，但could语气更加委婉。
Eg: Can I use your car
我可以借用你的车吗？
Could I use your car
我可以借用你的车吗？
（4）表示推测：can在表示推测时，常用于疑问句和否定句中；could表示对过去情况的推测。
Eg: This can’t be true.
这不可能是真的。
He could have finished the task.
他可能已经完成了任务。
（5）虚拟语气：could在虚拟条件句中表示对现在或将来情况的虚拟。
Eg: If I could fly, I would go to the moon.
如果我能飞，我会去月球。
【即学即用】
( )1. I ______ swim very well when I was five years old.
A.can B. could C. can’t D. couldn’t
( )2. My little brother ______ ride a bike now.
A.can B. could C. can’t D. couldn’t
( )3. She _______ speak English fluently last year, but now she can.
A.can B. could C. can’t D. couldn’t
( )4. Tom _____ play football very well, and he often wins the games.
A.can B. could C. can’t D. couldn’t
( )5. When I was younger, I _______ run faster than I can now.
A.can B. could C. am able to D. will be able to
答案：BADAB
二、写作：
本单元写作主题为“写一封邮件邀请朋友帮忙装饰你的房间”
（一）常用短语：
1.Buy some flowers 买一些花
2.Make a poster 制作一张海报
3.Go shopping 去购物
4.Bring a pair of scissors 带一把剪刀
5.Buy glue 买胶水
6.Bring a brush 带一把刷子
7.Make paper cuttings 做剪纸
8.Bring a painting 带一张画
（二）常用句型：
1.I will move into the new house next week.我下周要帮到新房子。
2.Could you help me decorate my house 你能帮我装饰一下我的房子吗？
3.We can buy ... 我们可以买一些...
4.Can you bring ... here 你能带一些...过来吗？
5.Please reply to me and let me know what you think.请给我回信，让我直到你的想法。
（三）范文：
Dear zhang:
I will move into the new house next week, could you help me decorate my house tomorrow
We can go shopping first, because I want to buy some flowers and some glue. And then we can make a poster, I want to hang it on the wall. Please bring a pair of scissors here, we can make paper cuttings and stick them on the windows. They can make my house more beautiful. If possible, could you please bring a brush and painting, we can use them to paint the wall light green.
Please reply to me and let me know what you think.
Best wishes
zhang
一、语法解析：
情态动词can和could用法：can和could为情态动词，没有人称的变化，在句中位于行为动词前，不可单独使用。具体用法如下：
（1）表示能力：can表示现在和将来的能力；could表示过去的能力。
Eg: I can swim.
我会游泳。
Could you speak English then
那时候你会说英语吗？
（2）表可能性：can表示客观可能性；could表示可能性时，语气更加委婉。
Eg: That big cinema can seat 2,000 people.
那家大电影院能坐2000人。
He could be very friendly at times.
他有时会很友好。
（3）表示请求或许可：can和could都可以用于请求或许可，但could语气更加委婉。
Eg: Can I use your car
我可以借用你的车吗？
Could I use your car
我可以借用你的车吗？
（4）表示推测：can在表示推测时，常用于疑问句和否定句中；could表示对过去情况的推测。
Eg: This can’t be true.
这不可能是真的。
He could have finished the task.
他可能已经完成了任务。
（5）虚拟语气：could在虚拟条件句中表示对现在或将来情况的虚拟。
Eg: If I could fly, I would go to the moon.
如果我能飞，我会去月球。
【即学即用】
( )1. I ______ swim very well when I was five years old.
A.can B. could C. can’t D. couldn’t
( )2. My little brother ______ ride a bike now.
A.can B. could C. can’t D. couldn’t
( )3. She _______ speak English fluently last year, but now she can.
A.can B. could C. can’t D. couldn’t
( )4. Tom _____ play football very well, and he often wins the games.
A.can B. could C. can’t D. couldn’t
( )5. When I was younger, I _______ run faster than I can now.
A.can B. could C. am able to D. will be able to
答案：BADAB
二、写作：
本单元写作主题为“写一封邮件邀请朋友帮忙装饰你的房间”
（一）常用短语：
1.Buy some flowers 买一些花
2.Make a poster 制作一张海报
3.Go shopping 去购物
4.Bring a pair of scissors 带一把剪刀
5.Buy glue 买胶水
6.Bring a brush 带一把刷子
7.Make paper cuttings 做剪纸
8.Bring a painting 带一张画
（二）常用句型：
1.I will move into the new house next week.我下周要帮到新房子。
2.Could you help me decorate my house 你能帮我装饰一下我的房子吗？
3.We can buy ... 我们可以买一些...
4.Can you bring ... here 你能带一些...过来吗？
5.Please reply to me and let me know what you think.请给我回信，让我直到你的想法。
（三）范文：
Dear zhang:
I will move into the new house next week, could you help me decorate my house tomorrow
We can go shopping first, because I want to buy some flowers and some glue. And then we can make a poster, I want to hang it on the wall. Please bring a pair of scissors here, we can make paper cuttings and stick them on the windows. They can make my house more beautiful. If possible, could you please bring a brush and painting, we can use them to paint the wall light green.
Please reply to me and let me know what you think.
Best wishes
zhang
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