专题09 期末复习之连词and、but 、because的用法-2024-2025学年七年级英语上学期期末复习重难点突破（人教版2024）

2024-2025学年七年级英语上学期期末复习重难点突破（人教版） 专题09 期末复习之连词and、but 、because的用法 连词and、but 、because的用法 连词 含义及用法 举   例 and 意为“和；并且”，表示顺接的逻辑关系，用来连接两个相同的句子成分，这两个句子成分可以是单词、短语或分句 【注意】当and连接两个分句时，如果第二个分句的主语与第一个分句的主语相同，则第二个分句中的主语可以省略 John and Tom are our good friends.约翰和汤姆是我们的好朋友。 The weather is nice and we feel warm.天气很好，我们感觉很暖和。 He listens to teachers and takes notes carefully.他认真听讲并且做笔记。 but 意为“但是；然而”，表示转折的逻辑关系，用来连接两个相同的句子成分，表示语义上的转折 Learning to play the guitar isn't difficult, but you have to practice.学弹吉他并不难，但是你得练习。 Our room is small but very clean. 我们的房间小，但是很干净。 because 意为“因为”，用于引导直接的、具体的原因，后跟句子，常用来回答由why提出的问题 【注意】because与so不能同时使用 —Why do you like dogs? 你为什么喜欢狗？ —Because they are friendly and clever. 因为它们既友好又聪明。 Because he is ill, he can't go to school today. 因为他生病了，所以今天不能去上学。 【拓展】 1.because of也表示“因为”，但是后面跟名词(短语)或代词。如： They didn't go to the museum because of the rain.＝They didn't go to the museum because it rained. 他们因为下雨没去博物馆。 2.在并列结构中，and常用于肯定句，or常用于否定句表示“和；与”之意。如： There is no air or water in the moon.月球上没有空气和水。 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．Amy loves fruit ________ vegetables very much, but she doesn’t like cola ________ cakes. A．or; and B．and; and C．or; or D．and; or 6．I got your telephone number from an old friend, ________ I’d like to share some news with you. A．but B．and C．however D．if 7．Mike ________ Betty are our friends. A．but B．or C．and D．in 8．This is Jim ________ that is Tony. They are both students. A．or B．but C．and D．so 9．It’s late. David washes his face _______ goes to bed. A．and B．but C．so D．or 10．This room is tidy, ________ that room isn’t. A．and B．of C．but D．for 11．Kate is tidy, ________ Tina is not. Her books are everywhere. A．and B．but C．so D．for 12．I like eating all kinds of candies, ________ they are bad for my teeth. A．and B．or C．but D．so 13．Some people are rich, ________ they are not happy. A．but B．so C．or D．because 14．All of us enjoy playing computer games, ________ we can’t spend too much time on it. A．because B．so C．but D．and 15．Jack is only four years old, ________ he can draw very good pictures. A．so B．and C．but D．because 16．Jack can’t write Chinese, ________ he can ________ Chinese. A．and; write B．and; speak C．but; speaks D．but; speak 17．Most bears live in cold countries, ________ some of them live in hot countries too. A．because B．so C．and D．but 18．-- Where is Leo? He said he would come tonight! -- Yes, he did say so, we can't find him now. A．and B．so C．but D．or 19．My brothers like watching football matches,_______they don’t like playing football. A．and B．but C．so D．or 20．I’m in No. 14 Middle School, _____ my brother _____. A．but, is B．but, isn’t C．and, isn’t 21．Jim and Paul look the same, ________ they are not brothers. A．so B．but C．too D．for 22．—Can you sing ________ dance? —I can sing, ________ I can’t dance. A．and; and B．or; or C．or; and D．or; but 23．Tom doesn’t have a tennis bat , _____ Helen _______ . A．and , does B．and , do C．but , does D．but , do 24．We don't have a car. ________we have two bikes. A．But B．And C．For D．In 25．—Why do you like listening to music? —________ it’s relaxing. A．So B．And C．Because D．But 26．We haven’t got any candy_________ it’s bad for our teeth. A．so B．but C．or D．because 27．—________ do you join the basketball club?   —I join the club ________ I want to be a basketball player. A．What; because B．Why; because C．How; so 28．Maria likes geography ______ it’s very interesting. A．so B．because C．but D．and 29．History is my favourite subject ________ it’s very interesting. A．so B．because C．but D．and 30．—Sally is a model student in our class. —Yeah. And she reaches the top not by luck ________ by hard work. A．and B．also C．because D．but 31．My mother eats little after 8 p.m. ________ she thinks it is healthy. A．so B．on C．before D．because 32．It is raining heavily, none of the students are late for school. A．although B．but C．so D．because 33．Tim likes to help others, ________ we all enjoy being with him. A．because B．but C．or D．so 34．—Why do you like this book? — ________ it’s great fun. A．So B．Or C．And D．Because 35．—Judy, you like maths, right? —Yes. It’s difficult, ________I think it’s useful for me. A．but B．or C．because D．so 36．—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 37．—I’m Mingming, ________ my English name is Sherry. —Nice to meet you, Mingming. A．and B．but C．so D．or 38．—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 39．________ he is very busy, ________ he can’t come to the party. A．So; because B．Because; so C．So; / D．Because; / 40．—Do you like biology? —Yes, ________ it’s too difficult. A．and B．but C．or D．because 41．Students often dance ________ sing in music class. A．and B．but C．because D．so 42．Wendy likes PE classes ________ she can play football with her classmates happily. A．and B．but C．because D．if 43．—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 44．I don’t want that T-shirt ________ it’s too big for me. Do you have a medium size (中号)? A．after B．but C．because D．so 45．Lucy ________ I are classmates. We are in Class 1. A．but B．or C．and D．so 46．Ice-cream is delicious, ________ we can’t eat too much. A．and B．so C．because D．but 47．I want to buy something special for my grandmother, ________ her birthday is coming. A．because B．and C．so D．but 48．I don’t have any apple juice, ________ I have some orange juice. Would you like some? A．but B．and C．or D．for 49．Go bird-watching in Qinglong Lake, ________ you will find it fun and meaningful. A．and B．or C．but D．because 50．I have a model plane ________ two clocks, ________ I don’t have a toy car. A．and; because B．and; so C．or; but D．and; but 二、完成句子 1．Bob likes geography. Bob likes Chinese. (合并为一句) Bob likes . 2．English is very important. My English teacher is really nice. (用 and, because或but连接下面的句子。) 3．I love Thursday afternoons. We have fun classes then. (用 and, because或but连接下面的句子。) 4．I’m not good at maths. I like the class very much. (用and, because或but连接下面的句子。) 5．She is my favourite teacher. She makes everyone in the class feel special. (用and，because或but连接两个句子。) 6．Peter’s favourite subject is Chinese. He thinks Chinese is very difficult. (用 and,because或but连接下面的句子。) . 7．I like biology best because it’s interesting.（对画线部分提问） you like biology best? 8．Chocolate isn’t healthy. It’s my favourite food. (用but连接两个句子) 9．Sandy doesn’t look smart or beautiful. (改为肯定句) Sandy . 10．I was tired last night. I went to bed early.(合成一个句子) 三、选词填空 用 and, but, or或 because 填空。 1．I have two brothers one sister. 2．I can’t see a pencil an eraser. 3．He can sing, he can’t fly a kite. 4．There are one door two windows in the classroom. 5．You don’t need to pay for the books they are free. 6．I have no bikes, he has two bikes. 7．What can you see, a pig a dog? 8．I have one grandfather one grandmother. 9．I have no brothers sisters. 10．I have to get up early tomorrow I must catch the early bus. 四、用and，but，because完成短文 Dear Sally, I’m happy to get your email. My favourite day is Friday 1 we have maths, English and PE on that day. At 8 o’clock in the morning, we have maths. I think maths is difficult 2 interesting. English class starts at 10 a.m. English is very important. Some students find it boring, 3 I think it’s interesting to remember English words. We have a PE lesson in the afternoon. I like sports, 4 I like PE class. Doing sports can make me feel relaxed (放松的). What about you? Please write to me 5 tell me your favourite day. Yours, Li Mei 原创精品资源学科网独家享有版权，侵权必究！1 学科网（北京）股份有限公司 $$ 2024-2025学年七年级英语上学期期末复习重难点突破（人教版） 专题09 期末复习之连词and、but 、because的用法 连词and、but 、because的用法 连词 含义及用法 举   例 and 意为“和；并且”，表示顺接的逻辑关系，用来连接两个相同的句子成分，这两个句子成分可以是单词、短语或分句 【注意】当and连接两个分句时，如果第二个分句的主语与第一个分句的主语相同，则第二个分句中的主语可以省略 John and Tom are our good friends.约翰和汤姆是我们的好朋友。 The weather is nice and we feel warm.天气很好，我们感觉很暖和。 He listens to teachers and takes notes carefully.他认真听讲并且做笔记。 but 意为“但是；然而”，表示转折的逻辑关系，用来连接两个相同的句子成分，表示语义上的转折 Learning to play the guitar isn't difficult, but you have to practice.学弹吉他并不难，但是你得练习。 Our room is small but very clean. 我们的房间小，但是很干净。 because 意为“因为”，用于引导直接的、具体的原因，后跟句子，常用来回答由why提出的问题 【注意】because与so不能同时使用 —Why do you like dogs? 你为什么喜欢狗？ —Because they are friendly and clever. 因为它们既友好又聪明。 Because he is ill, he can't go to school today. 因为他生病了，所以今天不能去上学。 【拓展】 1.because of也表示“因为”，但是后面跟名词(短语)或代词。如： They didn't go to the museum because of the rain.＝They didn't go to the museum because it rained. 他们因为下雨没去博物馆。 2.在并列结构中，and常用于肯定句，or常用于否定句表示“和；与”之意。如： There is no air or water in the moon.月球上没有空气和水。 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．Amy loves fruit ________ vegetables very much, but she doesn’t like cola ________ cakes. A．or; and B．and; and C．or; or D．and; or 6．I got your telephone number from an old friend, ________ I’d like to share some news with you. A．but B．and C．however D．if 7．Mike ________ Betty are our friends. A．but B．or C．and D．in 8．This is Jim ________ that is Tony. They are both students. A．or B．but C．and D．so 9．It’s late. David washes his face _______ goes to bed. A．and B．but C．so D．or 10．This room is tidy, ________ that room isn’t. A．and B．of C．but D．for 11．Kate is tidy, ________ Tina is not. Her books are everywhere. A．and B．but C．so D．for 12．I like eating all kinds of candies, ________ they are bad for my teeth. A．and B．or C．but D．so 13．Some people are rich, ________ they are not happy. A．but B．so C．or D．because 14．All of us enjoy playing computer games, ________ we can’t spend too much time on it. A．because B．so C．but D．and 15．Jack is only four years old, ________ he can draw very good pictures. A．so B．and C．but D．because 16．Jack can’t write Chinese, ________ he can ________ Chinese. A．and; write B．and; speak C．but; speaks D．but; speak 17．Most bears live in cold countries, ________ some of them live in hot countries too. A．because B．so C．and D．but 18．-- Where is Leo? He said he would come tonight! -- Yes, he did say so, we can't find him now. A．and B．so C．but D．or 19．My brothers like watching football matches,_______they don’t like playing football. A．and B．but C．so D．or 20．I’m in No. 14 Middle School, _____ my brother _____. A．but, is B．but, isn’t C．and, isn’t 21．Jim and Paul look the same, ________ they are not brothers. A．so B．but C．too D．for 22．—Can you sing ________ dance? —I can sing, ________ I can’t dance. A．and; and B．or; or C．or; and D．or; but 23．Tom doesn’t have a tennis bat , _____ Helen _______ . A．and , does B．and , do C．but , does D．but , do 24．We don't have a car. ________we have two bikes. A．But B．And C．For D．In 25．—Why do you like listening to music? —________ it’s relaxing. A．So B．And C．Because D．But 26．We haven’t got any candy_________ it’s bad for our teeth. A．so B．but C．or D．because 27．—________ do you join the basketball club?   —I join the club ________ I want to be a basketball player. A．What; because B．Why; because C．How; so 28．Maria likes geography ______ it’s very interesting. A．so B．because C．but D．and 29．History is my favourite subject ________ it’s very interesting. A．so B．because C．but D．and 30．—Sally is a model student in our class. —Yeah. And she reaches the top not by luck ________ by hard work. A．and B．also C．because D．but 31．My mother eats little after 8 p.m. ________ she thinks it is healthy. A．so B．on C．before D．because 32．It is raining heavily, none of the students are late for school. A．although B．but C．so D．because 33．Tim likes to help others, ________ we all enjoy being with him. A．because B．but C．or D．so 34．—Why do you like this book? — ________ it’s great fun. A．So B．Or C．And D．Because 35．—Judy, you like maths, right? —Yes. It’s difficult, ________I think it’s useful for me. A．but B．or C．because D．so 36．—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 37．—I’m Mingming, ________ my English name is Sherry. —Nice to meet you, Mingming. A．and B．but C．so D．or 38．—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 39．________ he is very busy, ________ he can’t come to the party. A．So; because B．Because; so C．So; / D．Because; / 40．—Do you like biology? —Yes, ________ it’s too difficult. A．and B．but C．or D．because 41．Students often dance ________ sing in music class. A．and B．but C．because D．so 42．Wendy likes PE classes ________ she can play football with her classmates happily. A．and B．but C．because D．if 43．—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 44．I don’t want that T-shirt ________ it’s too big for me. Do you have a medium size (中号)? A．after B．but C．because D．so 45．Lucy ________ I are classmates. We are in Class 1. A．but B．or C．and D．so 46．Ice-cream is delicious, ________ we can’t eat too much. A．and B．so C．because D．but 47．I want to buy something special for my grandmother, ________ her birthday is coming. A．because B．and C．so D．but 48．I don’t have any apple juice, ________ I have some orange juice. Would you like some? A．but B．and C．or D．for 49．Go bird-watching in Qinglong Lake, ________ you will find it fun and meaningful. A．and B．or C．but D．because 50．I have a model plane ________ two clocks, ________ I don’t have a toy car. A．and; because B．and; so C．or; but D．and; but 二、完成句子 1．Bob likes geography. Bob likes Chinese. (合并为一句) Bob likes . 2．English is very important. My English teacher is really nice. (用 and, because或but连接下面的句子。) 3．I love Thursday afternoons. We have fun classes then. (用 and, because或but连接下面的句子。) 4．I’m not good at maths. I like the class very much. (用and, because或but连接下面的句子。) 5．She is my favourite teacher. She makes everyone in the class feel special. (用and，because或but连接两个句子。) 6．Peter’s favourite subject is Chinese. He thinks Chinese is very difficult. (用 and,because或but连接下面的句子。) . 7．I like biology best because it’s interesting.（对画线部分提问） you like biology best? 8．Chocolate isn’t healthy. It’s my favourite food. (用but连接两个句子) 9．Sandy doesn’t look smart or beautiful. (改为肯定句) Sandy . 10．I was tired last night. I went to bed early.(合成一个句子) 三、选词填空 用 and, but, or或 because 填空。 1．I have two brothers one sister. 2．I can’t see a pencil an eraser. 3．He can sing, he can’t fly a kite. 4．There are one door two windows in the classroom. 5．You don’t need to pay for the books they are free. 6．I have no bikes, he has two bikes. 7．What can you see, a pig a dog? 8．I have one grandfather one grandmother. 9．I have no brothers sisters. 10．I have to get up early tomorrow I must catch the early bus. 四、用and，but，because完成短文 Dear Sally, I’m happy to get your email. My favourite day is Friday 1 we have maths, English and PE on that day. At 8 o’clock in the morning, we have maths. I think maths is difficult 2 interesting. English class starts at 10 a.m. English is very important. Some students find it boring, 3 I think it’s interesting to remember English words. We have a PE lesson in the afternoon. I like sports, 4 I like PE class. Doing sports can make me feel relaxed (放松的). What about you? Please write to me 5 tell me your favourite day. Yours, Li Mei 参考答案： 一、 1．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：艾米非常喜欢水果和蔬菜。但是她不喜欢可乐和蛋糕。 考查连词。在并列结构当中，and用于肯定句，or用于否定句（意为“和、与”）。故选D。 6．B 【详解】句意：我从一个老朋友那里得到你的电话，然后我想和你分享一些消息。 考查连词。but但是；and然后；however然而；if如果。根据“I got your telephone number”及“I’d like to share some news”可知前后是顺承关系，用连词“and”表达“然后”。关系B。 7．C 【详解】句意：迈克和贝蒂是我们的朋友。 考查连词。but但是，表示转折，连接主语时，谓语与but后的词在数上一致；or或者，表示选择，作主语，谓语按“就近原则”与靠近的主语在数上一致；and和，并且，表示并列，作主语，谓语常用复数形式；in在……里；本句谓语are是复数，此处应用and连接主语，故选C。 8．C 【详解】句意：这是吉姆，那是托尼。他们都是学生。 考查连词。or或者，表示选择；but但是，表示转折；and和，而且，表示并列和顺承；so因此，表示因果关系。根据句意可知前后句表示并列关系，可知填and。故选C。 9．A 【详解】试题分析：and和，并且；but但是，可是；so因此；or或者，否则。句意：很晚了，戴维德洗了脸，上床睡觉了。结合语境可知本句中两个动作为顺接关系，故选A。 考点：考查连词辨析 10．C 【详解】句意：这个房间很整洁，但是那个房间不整洁。 考查连词和介词辨析。and并且，和，表示并列；of……的；but但是，表示转折；for为了。分析句子可知，前后句表示转折关系，故选C。 11．B 【详解】句意：凯特很整洁，但蒂娜不整洁。她的书到处都是。 考查连词辨析。and和；but但是；so因此；for因此。“Kate is tidy”与“Tina is not”是转折关系，故选B。 12．C 【详解】句意：我喜欢吃各种甜品，但是它们对牙齿不好。 考查连词辨析。and和；or或者；but但是；so因此。“喜欢吃”和“对牙不好”之间有转折关系，用but连接。故选C。 13．A 【详解】句意：有些人很富有，但他们并不快乐。 考查连词辨析。but但是；so因此；or或者；because因为。“Some people are rich”与“they are not happy”是转折关系，故选A。 14．C 【详解】句意：我们都喜欢玩儿电脑游戏，但我们不能在它上面花太多时间。 考查连词辨析。because因为，表原因，从属连词；so所以，表结果，并列连词；but但是，表转折，并列连词；and那么，表顺承，并列连词。根据语境可知，“我们都喜欢玩儿电脑游戏”与“我们不能在它上面花太多时间”之间为转折关系，空处需填并列连词，but“但是”，并列连词，表转折，符合语境。故选C。 15．C 【详解】句意：杰克只有四岁，但他能画出很好的画。 考查连词辨析。so所以；and和；but但是；because因为。前后两句是转折关系，用but连接。故选C。 16．D 【详解】句意：杰克不会写中文，但是他会说中文。 考查连词和动词形式辨析。but但是，用于转折关系；and和，表达并列关系；write写；speak说。前后句是转折关系，故空一用but；空二前有情态动词can，后接动词原形。故选D。 17．D 【详解】句意：大多数熊生活在寒冷的国家，但其中一些也生活在炎热的国家。 考查转折连词。because因为；so所以；and 并且；but但是。“Most bears live in cold countries”和“some of them live in hot countries too.”在句意上是转折冠词，所以用转折连词but连接，故选D。 18．C 【详解】句意：——利奥在哪里？他说他今晚会回来。——是的，他确实这么说了，但是我们现在不能找到他。 考查连词辨析。A和，表示并列；B因此，表示因果；C但是，表示转折；D或者，表示选择。根据题意“是的，他这样说了，但是我们现在找不到他”，表示转折。故选C。 19．B 【详解】句意：我的兄弟喜欢看足球比赛，但他们不喜欢踢足球。考查连词辨析题。and表并列；but表转折；so表结果；or表选择。本句前后是转折关系，需用but连接；根据句意结构和语境，可知选B。 20．B 【详解】句意：我在第14中学，但我哥哥不在。考查连词辨析和系词形式。but但是，表转折；and和，表并列。根据句意结构，如是转折，后句就是否定式；如是并列，后句则和前句一样是肯定形式，所以AC选项自相矛盾，可排除。故选B。 21．B 【详解】句意：吉姆和保罗看起来一样，但是他们不是兄弟。 考查连词的用法。 so 所以；but 但是；too 也； for为了。前面look the same, 他们看起来一样，后面are not brothers.他们不是兄弟，可知前后是转折关系，故用连词but。故选B。 22．D 【详解】句意：——你会唱歌或跳舞吗？——我会唱歌，但是我不会跳舞。 考查连词辨析。and和，并且；or或者；but但是。问句是一般疑问句，疑问句中用or代替and，排除A；根据“I can sing…I can’t dance.”可知，前后为转折关系，第二空用but。故选D。 23．C 【详解】试题分析：句意：汤姆没有网球拍，但海伦有。根据句意及题干分析第一空表转折，所以用but；第二空代替上文的have，主语是Helen，所以用does，故选C。 考点：考查连词及动词的用法 24．A 【详解】试题分析：A. But但是；B. And和，又；C. For 因为；D. In在... 里面；根据题意可知是表示转折关系；句意：我们没有汽车，但是我们有两辆自行车。结合句意，故选A 考点：考查连词的辨析 25．C 【详解】句意：——你为什么喜欢听音乐？——因为它是令人放松的。 考查连词辨析。So因此；And而且；Because因为；But但是。根据“Why do you like listening to music?”可知，why引导的特殊疑问句要用because来回答。故选C。 26．D 【详解】句意：我们没有糖果，因为它对我们牙齿不好。 考查连词。so所以；but但是；or否则；because因为。根据“it’s bad for our teeth”可知我们没有糖果的原因是它对我们牙齿不好, 用连词“because”引导原因状语从句。故选D。 27．B 【详解】句意：--你为什么加入篮球俱乐部？--我加入俱乐部是因为我想成为一名篮球运动员。 考查特殊疑问词的用法。A. What; because什么；因为；B. Why; because为什么，因为；C. How; so怎么样，因此。根据句意--你为什么加入篮球俱乐部？--我加入俱乐部是因为我想成为一名篮球运动员可知。故答案为B。 28．B 【详解】句意：玛丽亚喜欢地理，因为它很有趣。考查连词辨析题。so所以，表结果；because因为，表原因；but但是，表转折；and和，表并列。本句前后是因果关系，需用because连接；根据句意语境，可知选B。 29．B 【详解】句意：历史是我最喜欢的学科，因为它非常有趣。 考查连词。so因此、所以，表示结果；because因为，表示原因；but但是，表示转折；and和，表示并列。根据句意可知，“我”最喜欢历史的原因是“它非常有趣”,用because引导状语从句，表示“我最喜欢历史学科的原因”。故选B。 30．D 【详解】句意：——Sally在我们班是一个模范学生。——是的。她得第一不是靠运气而是靠努力。 考查连词辨析。and和，表示并列关系；also也；because因为，表因果关系；but但是，表示转折关系。根据“not by luck...by hard work.”可知，这是转折关系。故选D。 31．D 【详解】句意：我妈妈晚上8点以后吃得很少，因为她认为这是健康的。 考查从属连词。so因此；on在……之上；before在……之前；because因为。根据“My mother eats little after 8 p.m. ... she thinks it is healthy.”可知，前后句为因果关系，此处表示原因，应用because。故选D。 32．B 【详解】句意：尽管在下大雨，但是没有一个学生上学迟到。A. although 尽管；   B. but 但是；   C. so因此；    D. because因为；根据It is raining heavily,和none of the students are late for school.之间是转折关系；故选B 33．D 【详解】句意：Tim喜欢帮助别人，所以我们都喜欢和他在一起。 考查连词辨析。because因为；but但是；or或者；so因此。根据“Tim likes to help others, ... we all enjoy being with him.”可知，前后句为因果关系，此处表示结果，应用so。故选D。 34．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。 35．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。 36．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。 37．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。 38．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。 39．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。 40．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。 41．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。 42．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。 43．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。 44．C 【详解】句意：我不想要那件T恤，因为它对我来说太大了。你有中号的吗？ 考查because引导的原因状语从句。after在……之后； but但是； because因为；so所以。空格前后为因果关系，前果后因，用because引导原因状语从句。故选C。 45．C 【详解】句意：我和Lucy是同学。我们在1班。 考查连词辨析。but但是；or或者；and和；so因此。根据“We are in Class 1”可知，此处表并列，故选C。 46．D 【详解】句意：冰淇淋很好吃，但是我们不能吃太多。 考查表示转折关系的并列连词。and和；so因此；because因为；but但是。空格前后两句为转折关系，应用表示转折关系的并列连词but来连接。故选D。 47．A 【详解】句意：我想给我奶奶买一些特别的东西，因为她的生日快到了。 考查连词辨析。because因为，表示原因；and和，表示并列；so所以，表示结果；but但是，表示转折。根据“I want to buy something special for my grandmother”和“her birthday is coming”可知，后一句是前一句的原因，应该用because。故选A。 48．A 【详解】句意：我没有苹果汁了，但是我有一些橙汁。你想要一些吗？ 考查连词辨析。but但是，表示转折；and和，表示并列；or或者，表示选择；for因为，表示原因。根据“I don’t have any apple juice”和“I have some orange juice”可知，前后是转折关系，应该用but。故选A。 49．A 【详解】句意：去青龙湖观鸟吧，你会发现这很有趣且有意义。 考查连词辨析。and和，并且，表顺承关系；or或者，表选择关系；but但是，表转折关系；because因为，表因果关系。根据“Go bird - watching in Qinglong Lake”和“you will find it fun and meaningful”可知，此处表示“做某事，然后就会……”承接前文应用连词and。故选A。 50．D 【详解】句意：我有一架飞机模型和两个钟，但我没有玩具汽车。 考查连词辨析。and和；because因为；so所以；but但是；or或者。根据“have a model plane…two clocks”可知是有一架飞机模型和两个时钟，用and连接；根据“I don’t have a toy car”可知此处和前句是转折关系，用but连接。故选D。 二、 1． geography and Chinese 【详解】句意：鲍勃喜欢地理。鲍勃喜欢中文。根据语境可知，此处指鲍勃喜欢地理和中文，geography“地理”，and“和”，Chinese“中文”。故填geography；and；Chinese。 2．English is very important and my English teacher is really nice. 【详解】句意：英语很重要。我的英语老师真的很好。and和，表示并列；because因为，表示原因；but但是，表示转折。两句话表示并列关系，都在描述英语和英语老师的好，所以用and连接，即英语很重要，我的英语老师也很好，故填English is very important and my English teacher is really nice. 3．I love Thursday afternoons because we have fun classes then. 【详解】句意：我喜欢星期四的下午。我们那时有有趣的课。and和，表示并列；because因为，表示原因；but但是，表示转折。分析两个句子可知，前后句之间存在因果关系，即“我喜欢星期四的下午”的原因是“我们那时有有趣的课”，所以应该用because连接两个句子。故填I love Thursday afternoons because we have fun classes then. 4．I’m not good at maths but I like the class very much. 【详解】句意：我不擅长数学。我非常喜欢这门课。and和，表示并列；because因为，表示原因；but但是，表示转折。根据句意，这两个句子之间存在转折关系，即尽管不擅长数学，但仍然非常喜欢这门课，所以应该用but连接。故填I’m not good at maths but I like the class very much. 5．She is my favourite teacher because she makes everyone in the class feel special. 【详解】句意：她是我最喜欢的老师。她让班上的每个人都感到特别。and和，表示并列；because因为，表示原因；but但是，表示转折。分析前后两个句子之间的关系可知，后者是前者的原因，即：因为她让班上的每个人都感到特别，所以她是我最喜欢的老师，所以应该用because连接。故填She is my favourite teacher because she makes everyone in the class feel special. 6．Peter’s favourite subject is Chinese but he thinks it is very difficult 【详解】句意：彼得最喜欢的科目是语文。他认为语文很难。两句之间为转折关系，应用连词but连接前后两个句子。故填：Peter’s favourite subject is Chinese but he thinks it is very difficult。 7． Why do 【详解】句意：我最喜欢生物，因为它很有趣。根据划线部分“because it’s interesting”可知，这里是提问原因，用疑问词why来提问，主语是“you”，like是实义动词，故需借助助动词do来完成提问。故填Why；do。 8．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. 9．looks smart and beautiful 【详解】句意：桑迪看起来不聪明也不漂亮。分析题干可知，句中包含助动词的否定形式doesn’t，在改为肯定句时，应把doesn’t去掉；主语Sandy为单数，因此谓语动词look应用单三形式looks。故填looks smart and beautiful。 10．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. 三、 1．and 2．or 3．but 4．and 5．because 6．but 7．or 8．and 9．or 10．because 【解析】1．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。 2．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。 3．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。 4．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。 5．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。 6．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。 7．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。 8．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。 9．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。 10．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、 1．because 2．but 3．but 4．so 5．and 【导语】本文是李梅写的信，文章中介绍了自己最喜欢的一天。 1．句意：我最喜欢的一天是星期五，因为那天我们有数学、英语和体育课。根据“we have maths, English and PE on that day.”可知，后文解释了原因，because“因为”符合语境。故填because。 2．句意：我认为数学很难但有趣。根据“I think maths is difficult…interesting.”可知，设空处前后表示转折，用but“但是”。故填but。 3．句意：有些学生觉得英语很无聊，但我认为记英语单词很有趣。根据“Some students find it boring…I think it’s interesting”可知，设空处前后为转折关系，but“但是”符合语境。故填but。 4．句意：我喜欢运动，所以我喜欢体育课。根据“I like sports…I like PE class.”可知，设空处前后为因果关系，so“所以”符合语境，故填so。 5．句意：请写信告诉我你最喜欢的一天。根据“Please write to me…tell me your favourite day”可知，设空处前后为顺承关系，and符合语境。故填and。 原创精品资源学科网独家享有版权，侵权必究！1 学科网（北京）股份有限公司 $$