2026年同步轻松练习八年级英语上册人教版第22页答案
【即学即用】
观察下列句子,判断哪些句子表示礼貌请求,哪些句子表示征求允许,用“R”或“P”在括号内标出(R for requests and P for permission)。
①Could you please clean the bathroom? (
R
)
②Can you take out the rubbish? (
R
)
③Could you please give me a lift? (
R
)
④Can I use your computer? (
P
)
⑤Could we get something to drink after the movie? (
P
)
单项选择。
⑥—Could you please help me with the housework, Peter?
—
D
.
A. You're welcome B. That's all right
C. No, I couldn't D. Yes, sure
⑦—Could you play the piano at the age of five?
—No, I
D
. I started at six.
A. can't B. shouldn't
C. needn't D. couldn't
⑧ Before, I
B
play badminton. Now I
play it well.
A. couldn't; could B. couldn't; can
C. can't; could D. can; couldn't

答案

①R ②R ③R ④P ⑤P ⑥D ⑦D ⑧B

解析

【分析】首先明确R代表礼貌请求(请求他人做某事),P代表征求允许(请求他人允许自己做某事)。先判断①-⑤:①②③都是请求对方做某事,属于礼貌请求(R);④⑤是请求允许自己做某事,属于征求允许(P)。单项选择部分:⑥是请求帮助的答语,需选礼貌同意的表达;⑦是过去能力的问答,问句用could,否定回答用couldn't;⑧是过去和现在的能力对比,过去用couldn't,现在用can。
【解析】1. 区分R和P:R用于请求他人执行动作,P用于请求他人允许自己执行动作。①Could you please clean the bathroom? 是请求对方打扫浴室,故填R;②Can you take out the rubbish? 是请求对方倒垃圾,填R;③Could you please give me a lift? 是请求对方搭便车,填R;④Can I use your computer? 是请求允许自己用电脑,填P;⑤Could we get something to drink after the movie? 是请求允许自己(我们)喝东西,填P。2. 单项选择:⑥问句是请求帮助,A(不客气)用于回应感谢,B(没关系)用于回应道歉,C(不,我不能)语气生硬,D(是的,当然)是礼貌同意,故选D;⑦问句用could询问过去的能力,否定回答用couldn't,故选D;⑧前半句对应过去(before),用couldn't表示过去不能,后半句对应现在(now),用can表示现在能,故选B。
【答案】①R ②R ③R ④P ⑤P ⑥D ⑦D ⑧B
【知识点】礼貌请求与允许、情态动词could的用法、时态与情态动词搭配
【点评】本题考查英语中礼貌交际用语的区分及情态动词的基础用法,属于英语基础知识点的应用,题目难度适中,学生只要掌握请求和允许的句型差异,以及could、can在不同时态下的用法即可正确解答。
【难度系数】0.7