以下是50道牛津英语七年级下册连词but, and, so选择填空专练试题及参考答案解析：
试题
I like music, ____ I can't sing very well.
She is good at math, ____ she often helps me with my math.
He got up late, ____ he missed the early bus.
Tom is very kind, ____ everyone likes him.
I wanted to go to the park, ____ it rained heavily.
She studied hard, ____ she passed the exam.
The book is interesting, ____ I want to read it again.
He is rich, ____ he is not happy.
I have a lot of homework to do, ____ I can't go out to play.
She can speak English, ____ she can also speak French.
He was tired, ____ he still went on working.
The movie was boring, ____ we left early.
I like apples, ____ my sister likes bananas.
He didn't have enough money, ____ he couldn't buy the book.
She is beautiful, ____ she is very friendly.
It was very cold, ____ we put on more clothes.
He worked hard, ____ he failed the exam.
I was ill, ____ I didn't go to school.
She is good at singing, ____ she is good at dancing too.
The weather was fine, ____ we went for a picnic.
He is clever, ____ he is lazy.
I have a headache, ____ I need to see a doctor.
She loves reading, ____ she spends a lot of money on books.
They are brothers, ____ they look very different.
The food was delicious, ____ we ate a lot.
He ran fast, ____ he still didn't catch the train.
I like swimming, ____ my friend likes running.
She was late, ____ the teacher was angry.
He is good at sports, ____ he is in good health.
The story is funny, ____ it is educational.
I wanted to buy a new dress, ____ I didn't have enough money.
She studied English hard, ____ she could speak it well.
He was hungry, ____ he ate a lot of food.
The box is heavy, ____ I can't carry it.
She is kind, ____ everyone wants to make friends with her.
It was dark, ____ we had to turn on the light.
He is tall, ____ his brother is short.
I have a lot of friends, ____ I never feel lonely.
She is good at drawing, ____ she won many prizes.
The music is beautiful, ____ I like it very much.
He worked hard, ____ he got a good grade.
I was thirsty, ____ I drank a lot of water.
She is shy, ____ she doesn't like to talk to strangers.
They played football well, ____ they won the game.
He is rich, ____ he is very generous.
The book is expensive, ____ I don't want to buy it.
I like reading novels, ____ my mother likes reading magazines.
She was tired, ____ she went to bed early.
He is good at math, ____ he often helps his classmates with math problems.
The weather was bad, ____ we had to stay at home.
参考答案及解析
but。前后句“喜欢音乐”和“唱得不好”是转折关系，用but。
and。前后句“擅长数学”和“帮助我学数学”是顺承关系，用and。
so。“起晚了”导致“错过早班车”，是因果关系，用so。
so。“人很好”所以“大家都喜欢他”，是因果关系，用so。
but。“想去公园”和“下大雨”是转折关系，用but。
so。“学习努力”所以“通过考试”，是因果关系，用so。
so。“书有趣”所以“想再读一遍”，是因果关系，用so。
but。“富有”和“不开心”是转折关系，用but。
so。“有很多作业”所以“不能出去玩”，是因果关系，用so。
and。“会说英语”和“也会说法语”是并列关系，用and。
but。“累了”和“继续工作”是转折关系，用but。
so。“电影无聊”所以“提前离开”，是因果关系，用so。
but。“我喜欢苹果”和“姐姐喜欢香蕉”是转折关系，用but。
so。“没钱”所以“不能买书”，是因果关系，用so。
and。“漂亮”和“友好”是并列关系，用and。
so。“很冷”所以“多穿衣服”，是因果关系，用so。
but。“努力学习”和“考试失败”是转折关系，用but。
so。“生病了”所以“没上学”，是因果关系，用so。
and。“擅长唱歌”和“也擅长跳舞”是并列关系，用and。
so。“天气好”所以“去野餐”，是因果关系，用so。
but。“聪明”和“懒惰”是转折关系，用but。
so。“头疼”所以“需要看医生”，是因果关系，用so。
so。“喜欢阅读”所以“花很多钱买书”，是因果关系，用so。
but。“是兄弟”和“看起来很不一样”是转折关系，用but。
so。“食物美味”所以“吃了很多”，是因果关系，用so。
but。“跑得很快”和“没赶上火车”是转折关系，用but。
but。“我喜欢游泳”和“朋友喜欢跑步”是转折关系，用but。
so。“迟到了”所以“老师生气了”，是因果关系，用so。
so。“擅长运动”所以“身体健康”，是因果关系，用so。
and。“有趣”和“有教育意义”是并列关系，用and。
but。“想买新裙子”和“钱不够”是转折关系，用but。
so。“努力学英语”所以“能说得好”，是因果关系，用so。
so。“饿了”所以“吃了很多食物”，是因果关系，用so。
so。“箱子重”所以“搬不动”，是因果关系，用so。
so。“善良”所以“大家都想和她交朋友”，是因果关系，用so。
so。“天黑了”所以“开灯”，是因果关系，用so。
but。“他高”和“他弟弟矮”是转折关系，用but。
so。“有很多朋友”所以“从不感到孤独”，是因果关系，用so。
so。“擅长画画”所以“赢得很多奖”，是因果关系，用so。
so。“音乐美”所以“很喜欢”，是因果关系，用so。
so。“努力学习”所以“取得好成绩”，是因果关系，用so。
so。“口渴了”所以“喝了很多水”，是因果关系，用so。
so。“害羞”所以“不喜欢和陌生人说话”，是因果关系，用so。
so。“足球踢得好”所以“赢得比赛”，是因果关系，用so。
and。“富有”和“慷慨”是并列关系，用and。
so。“书贵”所以“不想买”，是因果关系，用so。
but。“我喜欢读小说”和“妈妈喜欢读杂志”是转折关系，用but。
so。“累了”所以“早睡”，是因果关系，用so。
and。“擅长数学”和“帮助同学解决数学问题”是顺承关系，用and。
so。“天气不好”所以“不得不待在家”，是因果关系，用so。
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