2026年同步导学与优化训练七年级英语下册人教版第21页答案
Ⅰ. 选词填空
can have to must can't mustn't
1. —Can you play the violin?
—No, I
can't
, but I can sing.
2.
Can
Jim go to see the film with us this afternoon?
3. Students
must
keep the classrooms tidy and clean.
4. We
mustn't
cut down trees.
5. There are no buses to take now. We
have to
walk there.

答案

1. can't
2. Can
3. must
4. mustn't
5. have to

解析

【分析】本题考查情态动词(can、have to、must、can't、mustn't)的用法,解题时需结合句子语境、句型结构及情态动词的词义选择合适的词:第1题是对can开头的一般疑问句的否定回答,需用对应否定形式;第2题是询问能力的一般疑问句,用can引导;第3题表义务,用must;第4题表禁止,用mustn't;第5题表客观需要,用have to。
【解析】1. 问句为“Can you...?”的一般疑问句,其否定回答为“No, I can't”,故填can't;2. 句子为询问能力的一般疑问句,需用情态动词Can引导,故填Can;3. 此处表达学生必须履行的义务,用must表示“必须”,故填must;4. 此处表达禁止做某事,用mustn't表示“禁止、不准”,故填mustn't;5. 此处因客观情况(无公交)不得不做某事,用have to表示“不得不”,故填have to。
【答案】1. can't 2. Can 3. must 4. mustn't 5. have to
【知识点】情态动词用法、情态动词词义辨析
【点评】本题为初中英语基础题型,聚焦常见情态动词的基本用法,结合语境和句型即可轻松作答,是情态动词考点的基础练习。
【难度系数】0.8
Ⅱ. 完成句子
1. 请和其他人站成一排,不要插队。
Please stand in line with other people. Don't
jump
the
queue
.
2. 在图书馆请保持安静。
Please
keep
quiet
in the library.
3. 他今天因病没来学校。
He
is
absent
from
school today because of his illness.
4. 饭后不要立即离开餐桌。
Don't
leave
the table at once after the meal.
5. 不要在教室里大声喧哗。
Don't
make
noise
in the classroom.

答案

1. jump the queue
2. keep quiet
3. is absent from
4. Don't leave
5. make noise

解析

【分析】
本题为英语完成句子题,主要考察日常交际中的固定短语搭配、祈使句的语法结构。解题时需结合中文提示,回忆对应的英语固定表达,同时注意句子的语法要求(如否定祈使句的动词形式、主谓一致等)。
【解析】
1. 中文提示“插队”对应的固定短语是jump the queue,否定祈使句Don't后需接动词原形,因此填jump the queue;
2. 中文提示“保持安静”对应的固定短语是keep quiet,祈使句Please后接动词原形,因此填keep quiet;
3. 中文提示“没来学校(缺席)”对应的固定短语是be absent from,主语he为第三人称单数,一般现在时be动词用is,因此填is absent from;
4. 中文提示“不要离开”是否定祈使句,结构为Don't + 动词原形,“离开”对应leave,因此填Don't leave;
5. 中文提示“大声喧哗”对应的固定短语是make noise,否定祈使句Don't后接动词原形,因此填make noise。
【答案】
1. jump the queue;2. keep quiet;3. is absent from;4. Don't leave;5. make noise
【知识点】
固定短语搭配、祈使句用法、动词短语运用
【点评】
本题为英语基础题型,聚焦日常常用短语及祈使句的基础应用,难度较低,适合巩固英语基础词汇与短语的运用。
【难度系数】
0.8
Ⅲ. 完形填空
Dear Bruce,
Thanks for your email—good to hear from you. I'm looking forward to the exchange too!
Anyway, about the
B
1
and things. The school here isn't very
D
2
about most things, but there are a few things you need to know. First of all—
A
3
. You can wear what you want,
C
4
you can't wear jeans with holes in them. You should
B
5
comfortable things. And it'll be cold when you're here so you'd better bring some
D
6
clothes.
The school is pretty strict about phones—of course you can
A
7
one, but you have to
C
8
your phone and keep it in a place as you are required before class. You can't just put it on mute(调成静音), right? And you can bring
B
9
to the school, but you must eat it outside during the break. If it's raining, you can eat in the classroom.
In short, it's a good school and the teachers are kind. You really don't have to worry about anything here. Hope my advice is
D
10
to you. Write again soon, OK? And tell me if there's anything else you need to know.
Yours,
Sarah
1. A. marks B. rules C. games D. kinds
2. A. famous B. modern C. young D. strict
3. A. clothes B. flowers C. sports D. dreams
4. A. or B. so C. but D. for
5. A. pass B. wear C. lose D. sell
6. A. nice B. cute C. free D. warm
7. A. bring B. return C. throw D. solve
8. A. hand out B. write down C. turn off D. pick up
9. A. money B. food C. paper D. water
10. A. colourful B. beautiful C. careful D. helpful

答案

1.B 2.D 3.A 4.C 5.B 6.D 7.A 8.C 9.B 10.D

解析

【分析】
做完形填空需先通读全文把握主旨(Sarah告知Bruce交换生期间的学校规则),再结合每个空格的上下文语境、词汇词义及逻辑关系逐一分析选项:1. 第1空根据后文讲学校要求的内容选名词;2. 第2空由but转折关系判断形容词;3. 第3空对应后文穿着话题选名词;4. 第4空根据前后句转折逻辑选连词;5. 第5空结合“穿衣服”的语境选动词;6. 第6空由“冷”的提示选形容词;7. 第7空根据“带东西来学校”的语境选动词;8. 第8空结合手机管理要求选动词短语;9. 第9空由后文“吃”的提示选名词;10. 第10空根据“建议”的作用选形容词。
【解析】
1. 考查名词。后文围绕学校的要求展开,rules(规则)符合语境,故选B;
2. 考查形容词。由but转折可知,学校对多数事不严格,strict(严格的)符合逻辑,故选D;
3. 考查名词。后文讲穿着相关内容,clothes(衣服)符合,故选A;
4. 考查连词。前句“穿自己想穿的”和后句“不能穿破洞牛仔裤”是转折关系,but(但是)符合,故选C;
5. 考查动词。表示“穿舒服的衣服”,wear(穿)符合,故选B;
6. 考查形容词。由“it'll be cold”可知,需带暖和的衣服,warm(暖和的)符合,故选D;
7. 考查动词。表示“带手机来学校”,bring(带来)符合,故选A;
8. 考查动词短语。学校要求上课前关掉手机,turn off(关掉)符合,故选C;
9. 考查名词。后文提到“eat it”,可知可带食物,food(食物)符合,故选B;
10. 考查形容词。表示“希望建议对你有帮助”,helpful(有帮助的)符合,故选D。
【答案】
1.B 2.D 3.A 4.C 5.B 6.D 7.A 8.C 9.B 10.D
【知识点】
完形填空解题技巧、词义辨析、语境理解
【点评】
本文为书信类完形填空,围绕交换生的学校规则展开,侧重考查学生对上下文语境的理解及基础词汇的辨析运用,是初中英语常见题型,难度适中。
【难度系数】
0.6