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2025-2026学年七年级英语上学期满分冲刺专练（人教版2024）
Unit 4 My Favourite Subject 重点语法专练
学习目标
掌握连词and、but、because的用法
语法探究
连词and，but，because
【注意】because不能与so同时出现在一个句子中。
语法专练
一、单项选择
1．The child sees an old man at the crossing _________ runs to help him.
A．because B．but C．or D．and
2．Mia goes to bed early tonight _________ she has a boat race tomorrow morning.
A．but B．after C．so D．because
3．Tina is good at swimming, _________ she can’t play football.
A．so B．because C．but D．or
4．The teacher is very happy _________ her students all have a good time in her classes.
A．because B．or C．but D．before
5．—Why do you like this book
— ________ it’s great fun.
A．So B．Or C．And D．Because
6．—Judy, you like maths, right
—Yes. It’s difficult, ________I think it’s useful for me.
A．but B．or C．because D．so
7．—Do you watch sports every day
—No, I don’t. ________ I play ping-pong________ tennis every day. So I can play them well.
A．But; or B．And; but C．But; and D．Because; but
8．—I’m Mingming, ________ my English name is Sherry.
—Nice to meet you, Mingming.
A．and B．but C．so D．or
9．—Do Emily and her sister like sports
—Yes, they do. Emily likes ping-pong________ football. ________her sister likes them too.
A．and; But B．but; And C．and; And D．but; But
10．—________do you like maths
—Because it’s useful.
A．Why B．What C．When D．How
11．—________ your favourite subject
—My favourite subject is science.
A．What B．What’s C．How D．How’s
12．________ he is very busy, ________ he can’t come to the party.
A．So; because B．Because; so C．So; / D．Because; /
13．—Who is the boy over there
—Sorry, I can’t ________ his name.
A．sound B．write C．remember D．spell
14．My sister likes to listen ________ music and she is good ________ singing.
A．to; to B．to; at C．at; at D．at; to
15．—Do you like biology
—Yes, ________ it’s too difficult.
A．and B．but C．or D．because
16．Students often dance ________ sing in music class.
A．and B．but C．because D．so
17．Wendy likes PE classes ________ she can play football with her classmates happily.
A．and B．but C．because D．if
18．—________ do you like playing basketball
—Because it is relaxing.
A．When B．Where C．Why D．What
19．—________ is your art teacher
—Mr Wang.
A．Why B．How C．Where D．Who
20．—I don’t like reading ________ watching TV. What about you
—I don’t like reading all day, ________ I like watching TV news.
A．and; or B．and; and C．or; and D．or; but
二、完形填空
I love learning different languages (语言). And English is my favourite subject at school.
I love English 21 it’s really fun for me to learn new words. I want to have English classes from Monday to Friday. I can only speak a little English, 22 my English teacher is so friendly and helpful. She often helps me 23 my English. 24 do I study English after class I learn it by watching English movies, singing English songs 25 talking with others in English. I think English opens a door for me and I can learn about different countries and their cultures (文化). Learning English well can help me have a better future.
21．A．before B．or C．but D．because
22．A．because B．before C．but D．or
23．A．of B．with C．at D．by
24．A．How B．When C．Why D．What
25．A．but B．and C．so D．because
三、选词填空
用 and, but, or或 because 填空。
26．I have art geography today.
27．Biology is difficult important.
28．He doesn’t like maths it’s boring to him.
29．English is important, my English teacher is really nice.
30．History is my favourite subject, my sister doesn’t like it.
31．I have two brothers one sister.
32．I can’t see a pencil an eraser.
33．He can sing, he can’t fly a kite.
34．There are one door two windows in the classroom.
35．You don’t need to pay for the books they are free.
36．I have no bikes, he has two bikes.
37．What can you see, a pig a dog
38．I have one grandfather one grandmother.
39．I have no brothers sisters.
40．I have to get up early tomorrow I must catch the early bus.
四、按要求完成句子
41．Our English teacher is hard-working and kind, so we all like her. (改为同义句)
We all like our English teacher she is hard-working and kind.
42．It is sunny today. The kids go out to play. (用and合并为一句话)
43．Lucy is happy because she makes a new friend. (对画线部分提问)

44．Jackson can play tennis. Peter can’t play tennis. (用but合并为一句话)
45．Frank does sports every day so he is strong. (用because改写)
46．My favourite school day is Thursday.（对画线部分提问）
is your favourite school day
47．Lily likes the same subjects as me.（对画线部分提问）
the same subjects you
48．I have maths and music on Fridays. (对画线部分提问)
do you have on Fridays
49．Chocolate isn’t healthy. It’s my favourite food. (用but连接两个句子)
50．I was tired last night. I went to bed early.(合成一个句子)
五、短文填空
根据短文内容, 用and, but 或because补全短文。
Michael is a boy from the US. His favourite subject is Chinese. Why does he like the subject 51 he likes China very much. He wants to know something about the history of China, 52 it’s difficult for him now. He has a Chinese friend called Zhang Li. The girl often helps him with his Chinese.
Michael does well at school. He has seven lessons every day, four in the morning 53 three in the afternoon. He likes maths and science very much, 54 his PE isn’t very good. He doesn’t like doing sports. He is busy from Monday to Friday. 55 on Saturday and Sunday, he is free. So, what does he do He always reads books after breakfast. And he watches TV with his mother for two hours in the evening.2025-2026学年七年级英语上学期满分冲刺专练（人教版2024）
Unit 4 My Favourite Subject 重点语法专练
学习目标
掌握连词and、but、because的用法
语法探究
连词and，but，because
【注意】because不能与so同时出现在一个句子中。
语法专练
一、单项选择
1．The child sees an old man at the crossing _________ runs to help him.
A．because B．but C．or D．and
2．Mia goes to bed early tonight _________ she has a boat race tomorrow morning.
A．but B．after C．so D．because
3．Tina is good at swimming, _________ she can’t play football.
A．so B．because C．but D．or
4．The teacher is very happy _________ her students all have a good time in her classes.
A．because B．or C．but D．before
5．—Why do you like this book
— ________ it’s great fun.
A．So B．Or C．And D．Because
6．—Judy, you like maths, right
—Yes. It’s difficult, ________I think it’s useful for me.
A．but B．or C．because D．so
7．—Do you watch sports every day
—No, I don’t. ________ I play ping-pong________ tennis every day. So I can play them well.
A．But; or B．And; but C．But; and D．Because; but
8．—I’m Mingming, ________ my English name is Sherry.
—Nice to meet you, Mingming.
A．and B．but C．so D．or
9．—Do Emily and her sister like sports
—Yes, they do. Emily likes ping-pong________ football. ________her sister likes them too.
A．and; But B．but; And C．and; And D．but; But
10．—________do you like maths
—Because it’s useful.
A．Why B．What C．When D．How
11．—________ your favourite subject
—My favourite subject is science.
A．What B．What’s C．How D．How’s
12．________ he is very busy, ________ he can’t come to the party.
A．So; because B．Because; so C．So; / D．Because; /
13．—Who is the boy over there
—Sorry, I can’t ________ his name.
A．sound B．write C．remember D．spell
14．My sister likes to listen ________ music and she is good ________ singing.
A．to; to B．to; at C．at; at D．at; to
15．—Do you like biology
—Yes, ________ it’s too difficult.
A．and B．but C．or D．because
16．Students often dance ________ sing in music class.
A．and B．but C．because D．so
17．Wendy likes PE classes ________ she can play football with her classmates happily.
A．and B．but C．because D．if
18．—________ do you like playing basketball
—Because it is relaxing.
A．When B．Where C．Why D．What
19．—________ is your art teacher
—Mr Wang.
A．Why B．How C．Where D．Who
20．—I don’t like reading ________ watching TV. What about you
—I don’t like reading all day, ________ I like watching TV news.
A．and; or B．and; and C．or; and D．or; but
二、完形填空
I love learning different languages (语言). And English is my favourite subject at school.
I love English 21 it’s really fun for me to learn new words. I want to have English classes from Monday to Friday. I can only speak a little English, 22 my English teacher is so friendly and helpful. She often helps me 23 my English. 24 do I study English after class I learn it by watching English movies, singing English songs 25 talking with others in English. I think English opens a door for me and I can learn about different countries and their cultures (文化). Learning English well can help me have a better future.
21．A．before B．or C．but D．because
22．A．because B．before C．but D．or
23．A．of B．with C．at D．by
24．A．How B．When C．Why D．What
25．A．but B．and C．so D．because
三、选词填空
用 and, but, or或 because 填空。
26．I have art geography today.
27．Biology is difficult important.
28．He doesn’t like maths it’s boring to him.
29．English is important, my English teacher is really nice.
30．History is my favourite subject, my sister doesn’t like it.
31．I have two brothers one sister.
32．I can’t see a pencil an eraser.
33．He can sing, he can’t fly a kite.
34．There are one door two windows in the classroom.
35．You don’t need to pay for the books they are free.
36．I have no bikes, he has two bikes.
37．What can you see, a pig a dog
38．I have one grandfather one grandmother.
39．I have no brothers sisters.
40．I have to get up early tomorrow I must catch the early bus.
四、按要求完成句子
41．Our English teacher is hard-working and kind, so we all like her. (改为同义句)
We all like our English teacher she is hard-working and kind.
42．It is sunny today. The kids go out to play. (用and合并为一句话)
43．Lucy is happy because she makes a new friend. (对画线部分提问)

44．Jackson can play tennis. Peter can’t play tennis. (用but合并为一句话)
45．Frank does sports every day so he is strong. (用because改写)
46．My favourite school day is Thursday.（对画线部分提问）
is your favourite school day
47．Lily likes the same subjects as me.（对画线部分提问）
the same subjects you
48．I have maths and music on Fridays. (对画线部分提问)
do you have on Fridays
49．Chocolate isn’t healthy. It’s my favourite food. (用but连接两个句子)
50．I was tired last night. I went to bed early.(合成一个句子)
五、短文填空
根据短文内容, 用and, but 或because补全短文。
Michael is a boy from the US. His favourite subject is Chinese. Why does he like the subject 51 he likes China very much. He wants to know something about the history of China, 52 it’s difficult for him now. He has a Chinese friend called Zhang Li. The girl often helps him with his Chinese.
Michael does well at school. He has seven lessons every day, four in the morning 53 three in the afternoon. He likes maths and science very much, 54 his PE isn’t very good. He doesn’t like doing sports. He is busy from Monday to Friday. 55 on Saturday and Sunday, he is free. So, what does he do He always reads books after breakfast. And he watches TV with his mother for two hours in the evening.
参考答案
一、
D
【详解】句意：孩子在十字路口看到一个老人，就跑过去帮助他。
考查连词辨析。because因为，引导原因状语从句；but但是，并列连词，表转折；or或者，并列连词，表选择；and和，然后，并列连词，表并列，用于连接两个相关的动作或情况。根据“The child sees an old man at the crossing ... runs to help him.”可知，孩子看到老人后立即跑过去帮助他，这两个动作是连续的，因此用and。故选D。
2．D
【详解】句意：米娅今晚早点睡觉，因为她明天早上有一场划船比赛。
考查连词辨析。but但是，并列连词，表转折；after在……之后，引导时间状语从句；so因此，并列连词，表示因果关系；because因为，引导原因状语从句。根据“Mia goes to bed early tonight ... she has a boat race tomorrow morning.”可知，前面是结果，后面是原因，即米娅今晚早睡的原因是因为她明天早上有一个划船比赛，用because引导原因状语从句。故选D。
3．C
【详解】句意：蒂娜擅长游泳，但她不会踢足球。
考查连词辨析。so所以，表示因果关系；because因为，引导原因状语从句；but但是，表转折；or或者，表选择。根据“Tina is good at swimming, ... she can’t play football.”可知，前后是转折关系，因此用but。故选C。
4．A
【详解】句意：老师很高兴，因为她的学生们在她的课上都过得很愉快。
考查连词辨析。because因为，引导原因状语从句；or或者，并列连词，表选择；but但是，并列连词，表转折；before在……之前，引导时间状语从句。根据“The teacher is very happy ... her students all have a good time in her classes.”可知，前一句表示结果，后一句表示原因，因此用because符合语境。故选A。
5．D
【详解】句意：——你为什么喜欢这本书？——因为它很有趣。
考查连词辨析。So因此，表示结果；Or或者，表示选择；And和，表示并列；Because因为，表示原因。根据问句“Why do you like this book ”可知，此处是在询问喜欢这本书的原因，所以答句应用because。故选D。
6．A
【详解】句意：——朱迪，你喜欢数学，对吗？——是的。它很难但是我认为对我很有用。
连词词义辨析。but但是，表转折；or或者，否则；because因为，表原因；so因此，表因果关系。根据“It’s difficult”和“I think it’s useful for me.”可知这两句关系是表转折，需用连词but“但是”。故选A。
7．C
【详解】句意：——你每天都看体育节目吗？——不，我不看。但是我每天都打乒乓球和网球。所以我打它们打得很好。
考查连词辨析。But但是，表示转折；or或者，表示选择；And和，表示并列；Because因为，表示原因；but但是，表示转折。根据语境可知，前后句之间构成转折关系，所以第一空应该用But；再根据“play ping-pong...tennis every day”可知，此处表示“打乒乓球和网球”，所以应该用and连接两个并列的宾语。故选C。
8．A
【详解】句意：——我是明明，我的英文名字是Sherry。——很高兴认识你，明明。
考查并列连词辨析。and和；but但是；so因此；or或者。空格前后表示并列，应用and连接，故选A。
9．C
【详解】句意：——艾米丽和她妹妹喜欢运动吗？——是的，她们喜欢。艾米丽喜欢乒乓球和足球。她妹妹也喜欢它们。
考查连词辨析。and和，表示并列关系；but但是，表示转折关系。根据语境可知，第一空前后描述的是艾米丽喜欢的两种运动，应用and连接表示并列关系；第二空前后的句子都在描述她们喜欢运动这件事，应用and连接表示并列关系，表示“她们都喜欢运动”。故选C。
10．A
【详解】句意：——你为什么喜欢数学？——因为它有用。
考查特殊疑问句。Why为什么；What什么；When什么时候；How如何。根据答语“Because it’s useful.”可知，此处是询问喜欢数学的原因，应用why来提问。故选A。
11．B
【详解】句意：——你最喜欢的科目是什么？——我最喜欢的科目是科学。
考查特殊疑问句。What什么；What’s是什么，What和is的缩写；How如何；How’s是如何，How和is的缩写。根据答语“My favourite subject is science.”可知，此处是询问“你最喜欢的科目是什么”，应用疑问词what，且此处是特殊疑问句，有实义动词be，所以应用what和is的缩写what’s来提问。故选B。
12．D
【详解】句意：因为他很忙，所以他不能来参加聚会。
考查连词辨析。so因此，表示结果；because因为，表示原因。分析句子可知，前半句he is very busy是后半句he can’t come to the party的原因，所以第一空应用because引导原因状语从句；so用于引导结果状语从句，但是不与because同时使用，且结果状语从句中通常不用连词。所以第二空是空白。故选D。
13．C
【详解】句意：——那边的那个男孩是谁？——对不起，我记不住他的名字了。
考查动词辨析。sound听起来；write写；remember记住；spell拼写。根据“Who is the boy over there ”以及“Sorry”可知，此处是在说记不住对方的名字了，所以应该用remember。故选C。
14．B
【详解】句意：我姐姐喜欢听音乐并且她擅长唱歌。
考查介词辨析。根据题意可知，listen to 听……，固定短语；be good at擅长，固定短语。故选B。
15．B
【详解】句意：——你喜欢生物学吗？——是的，但是太难了。
考查连词辨析。and和，又；but但是，然而；or或，或者；because因为，由于。根据“Yes, …it’s too difficult.”可知，此处是指喜欢生物但是它很难，表转折应用but连接。故选B。
16．A
【详解】句意：学生们经常在音乐课上跳舞和唱歌。
考查连词辨析。and和，又；but但是，然而；because因为，由于；so因此。根据“Students often dance …sing in music class.”可知，此处跳舞和唱歌为并列关系，应用and连接。故选A。
17．C
【详解】句意：Wendy喜欢体育课，因为她可以和同学们快乐地踢足球。
考查连词辨析。and和，又；but但是；because因为，由于；if如果，倘若。根据“Wendy likes PE classes …she can play football with her classmates happily.”可知，空处后解释了Wendy喜欢体育课的原因，应用because连接。故选C。
18．C
【详解】句意：——你为什么喜欢打篮球？——因为它让人放松。
考查特殊疑问句。When什么时候；Where哪里；Why为什么；What什么。根据“Because it is relaxing.”可知，此处回答了上文问了为什么喜欢打篮球的理由，应用why提问原因。故选C。
19．D
【详解】句意：——你的美术老师是谁？——王先生。
考查特殊疑问句。Why为什么；How怎样；Where在哪里；Who谁。根据答语“Mr Wang.”可知，此处对人进行提问。故选D。
20．D
【详解】句意：——我不喜欢阅读和看电视。你呢？——我不喜欢整天读书，但我喜欢看电视新闻。
考查连词辨析。and和；or或者；but但。根据第一个空前的“don’t ”可知，此处表示也不喜欢看电视，用or。根据第二个空前的“I don’t like reading all day”及空后的“I like watching TV news”的语境可知，此处句意发生了转折，用but。故选D。
二、
21．D 22．C 23．B 24．A 25．B
【导语】本文是一篇说明文，主要介绍了作者最喜爱英语学科，以及她学习英语的方法和感受。
21．句意：我喜欢英语，因为学习新单词对我来说非常有趣。
before在……之前；or或者；but但是；because因为。根据“I love English...it’s really fun for me to learn new words.”可知，前后两个句子结构完整，空格处缺少连词，前后是因果关系，后面是原因，用because引导原因状语从句。故选D。
22．句意：我只能讲一点英语，但我的英语老师非常友好和乐于助人。
because因为；before在……之前；but但是；or或者。根据“I can only speak a little English, ... my English teacher is so friendly and helpful.”可知，前后两个句子结构完整，空格处缺少连词，前后是转折关系，因此用连词but。故选C。
23．句意：她经常帮助我学习英语。
of……的；with和……一起，使用；at在，某时刻或地点；by通过，被。help sb. with sth.意为“帮助某人做某事”，因此用介词with。故选B。
24．句意：我在课后是如何学习英语的？
How怎样，如何；When何时；Why为什么；What什么。根据下文“I learn it by watching English movies, singing English songs...”可知，此处说的是学习英语的方式，因此用how“如何”来询问方式或方法。故选A。
25．句意：我通过观看英语电影、唱英文歌曲和与他人用英语交流来学习。
but但是；and和，并且；so所以；because因为。根据“by watching English movies, singing English songs...talking with others in English.”可知，此处说的是作者通过多种方式学习英语，包括看电影、唱歌和交流，这几项是并列关系，因此用并列连词and。故选B。
三、
26．and 27．but 28．because 29．and 30．but 31．and 32．or 33．but 34．and 35．because 36．but 37．or 38．and 39．or 40．because
【解析】26．句意：我今天有美术和地理课。根据“art...geography”可知，前后表示并列关系，用and连接。故填and。
27．句意：生物学很难，但很重要。根据“Biology is difficult...important.”可知，前后表示转折关系，用but连接。故填but。
28．句意：他不喜欢数学，因为它对他来说很无聊。根据“He doesn’t like maths...it’s boring to him.”可知，前后表示因果关系，后面是原因，用because引导原因状语从句。故填because。
29．句意：英语很重要，我的英语老师真的很好。根据“English is important,...my English teacher is really nice.”可知，前后是并列关系，用and连接。故填and。
30．句意：历史是我最喜欢的科目，但我姐姐不喜欢。根据“History is my favourite subject,...my sister doesn’t like it.”可知，前后是转折关系，用but连接。故填but。
31．句意：我有两个兄弟和一个妹妹。根据“two brothers…one sister.”可知，此处为并列关系，and“和”符合题意。故填and。
32．句意：我看不见铅笔或橡皮。根据“I can’t see a pencil”可知，该句是否定句，填or表选择。故填or。
33．句意：他会唱歌，但不会放风筝。根据“he can’t fly a kite.”可知，后文语境发生了转折，but“但是”符合题意。故填but。
34．句意：教室里有一扇门和两扇窗户。根据“There are one door…two windows”可知，此处为并列关系，and“和”符合题意。故填and。
35．句意：你不需要为这些书付费，因为它们是免费的。根据“they are free.”可知，后文解释了原因，because“因为”符合题意。故填because。
36．句意：我没有自行车，但他有两辆自行车。根据“he has two bikes.”可知，后文语境发生了转折，but“但是”符合语境。故填but。
37．句意：你能看到什么，猪还是狗？根据“a pig…a dog”可知，用or表选择。故填or。
38．句意：我有一个爷爷和一个奶奶。根据“one grandfather…one grandmother.”可知，此处为并列关系，and“和”符合题意。故填and。
39．句意：我没有兄弟姐妹。根据“I have no brothers…sisters.”可知，此处用or表否定中的并列。故填or。
40．句意：我明天必须早起，因为我必须赶早班车。根据“I must catch the early bus.”可知，后文解释了原因，because“因为”符合题意。故填because。
四、
41．because
【详解】句意：我们的英语老师工作勤奋又和蔼可亲，所以我们都很喜欢她。原句是so连接的并列复合句，“Our English teacher is hard-working and kind”表示原因，“we all like her”表示结果，根据题干要求改为同义句，可以用because引导原因状语从句，即“我们都喜欢英语老师是因为她工作勤奋又和蔼可亲”。故填because。
42．It is sunny today and the kids go out to play.
【详解】句意：今天天气晴朗。孩子们出去玩耍。根据题干，and连接两个并列分句，两个句子都是一般现在时，主语分别为It和The kids，中间用and连接，其他部分不变。故填It is sunny today and the kids go out to play.
43．Why is Lucy happy
【详解】句意：露西很高兴，因为她交到了一个新朋友。根据题干要求，画线部分“because she makes a new friend”是原因状语，询问原因用疑问词why“为什么”提问，特殊疑问句结构为：特殊疑问词+一般疑问句，原句含有be动词is，在疑问句中，将系动词is移到主语Lucy之前，用以构成疑问语序，其他部分不变。故填Why is Lucy happy。
44．Jackson can play tennis, but Peter can’t.
【详解】句意：杰克逊会打网球。彼得不会打网球。根据题干，but连接两个并列分句，表示转折关系，两个句子都是一般现在时，主语分别为Jackson和Peter，中间用but连接，可以省略第二个play tennis使得句子更加简洁。故填Jackson can play tennis, but Peter can’t.
45．Frank is strong because he does sports every day.
【详解】句意：弗兰克每天都做运动，所以他很强壮。原句是so连接的表示因果关系的并列复合句，“Frank does sports every day”是原因，“he is strong”是结果。根据题干要求，用because改写句子，because引导原因状语从句，要用because解释他强壮的原因，所以本句应表达为“弗兰克很强壮，因为他每天都做运动”，句子时态为一般现在时，主句是Frank is strong，后面接because引导的原因状语从句，从句主语是he，谓语动词用第三人称单数形式does，宾语sports，every day是时间状语，放句末。故填Frank is strong because he does sports every day.
46． Which day
【详解】句意：我最喜欢的上课日是星期四。根据划线部分可知，询问询问最喜欢哪一天，which day符合句意，句首首字母大写，故填Which；day。
47． Who likes as
【详解】句意：莉莉和我喜欢相同的科目。划线部分为“Lily”，这里是提问人，用疑问词who来提问，主语变为“who”，为第三人称单数，故动词需用三单形式likes。原句中的“as me”需要调整语序变为“as you”，as为介词，后接人称代词宾格。故填Who；likes；as。
48． What subjects
【详解】句意：我星期五上数学和音乐。画线部分是具体的科目，提问用“what”，科目是“subject”。画线部分是两个科目，用复数。故填What；subjects。
49．Chocolate isn’t healthy but it’s my favourite food.
【详解】句意：巧克力并不是健康的。这是我最喜欢的食物。前后两句之间是转折关系，应用but“但是”连接，故填Chocolate isn’t healthy but it’s my favourite food.
50．Because I was tired last night, I went to bed early./I was tired last night, so I went to bed early./I was so tired last night that I went to bed early.
【详解】句意：我昨晚很累。我很早就上床睡觉了。前后文之间是因果关系，前因后果，故可用because引导原因状语从句，也可用连词so表结果，because和so不能连用。或者用so…that…“如此……以至于……”引导结果状语从句。故填Because I was tired last night, I went to bed early./I was tired last night, so I went to bed early./I was so tired last night that I went to bed early.
五、
51．Because 52．but 53．and 54．but 55．But
【导语】本文是迈克尔的个人信息。
51．句意：因为他非常喜欢中国。根据“Why does he like the subject ”可知，回答原因，because符合，首字母大写，故填Because。
52．句意：他想了解一些关于中国的历史，但现在对他来说很难。根据“it’s difficult for him now”可知，前后转折，but符合句意，故填but。
53．句意：他每天上七节课，上午四节课，下午三节课。根据“four in the morning”可知，前后并列关系，and符合句意，故填and。
54．句意：他非常喜欢数学和科学，但他的体育成绩不太好。根据“He likes maths and science very much”可知，前后转折，but符合句意，故填but。
55．句意：但周六和周日他有空。根据“He is busy from Monday to Friday.”可知，前后两句转折关系，but符合句意，句首首字母大写，故填But。

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