Unit 3 A helping hand 重点单词及词性转换进阶练80题（分层练习）英语新教材沪教版五四学制七年级下册

学校:___________姓名：___________班级：___________考号：___________ Unit3 A helping hand 重点单词及词性转换进阶练80题（分层练习） 说明：此专题分三个难度层次，基础入门训练<进阶拓展训练< 能力综合实践，老师根据学生实际情况进行针对性难度训练。 基础入门训练30题 1．Connie and David are ________ (thank) for what their mother does for them. 2．These two weeks go too (quick). 3．Does go to school every day? (him) 4．Don’t the dog suddenly, or it may bite you. (attack) 5．We offered (主动提出) to look after our (neighbour) dog when she was away. 6．The two were made by my grandparents and I have kept them for about 5 years. (wallet) 7．Teenagers should do more exercise (build) a strong body. 8．When his grandpa heard the good news, he smiled and (nod) his head. 9．Body language is very common in our lives. our head means we agree with others. (nod) 10．Alice uses the Internet (once) a week. 11．Take two if your headache doesn’t go away. (pill) 12．I am good at English and I can express myself (clear). 13．If you’re looking for (lady) shoes, go to the second floor. 14．People put on thick (sweat) and boots in winter. 15．—Millie, you move to a new community (社区). What are your new (neighbour) like? —They are friendly and helpful. It’s really lucky for me to live there! 16．In my study, there are a few (shelf). 17．There are some (shelf) in his workshop. 18．—How are you?—I am great, (thank). 19．Finally my teammates made me realize that (lost) a game is also a part of the game. 20．I (lost) my watch yesterday. 21．Long ago, a farmer (lost) his horse. 22．One of the ________ passed out and was helped off the stage. (contestant) 23．Andy warned us to be careful with our (wallet) while taking a bus. 24．When a small object (drop) from a great height, it may cause serious problems. 25．Elena (drop) the novel she was reading on the desk and looked out the window. 26．Dr. Brown felt tired because he had a couple of (operate) in a day. 27．I was so (shock) that I couldn’t speak. 28．A girl (sudden) stopped me and asked me whether I was Mary. 29．I was walking in the park when (sudden) it started to rain heavily. 30．The sky (sudden) turns dark. There will be a heavy rain. 进阶拓展训练30题 31．Alice (usual) visits her grandparents on Saturdays. 32．Tigers (usual) live in the forest. 33．The shopping mall is full of people. We can find all (kind) of things there. 34．We borrow books from the . (library) 35．—What (happen) to Tom yesterday? —He got (lose) and asked the police for help. 36．Here is a set of (key) in the classroom. 37． (impress) yourself in a proper way is very important. 38．You can see two tall (build) in front of you. 39．The Double Ninth Festival offers people a chance to love our and respect them.  (old) 40．She (nod) to me in greeting when I went into the room. 41．I have been to Beijing (once). 42．The project (aid) millions of poor families since 1998. 43．You should take some (medicine) and (pill) on time 44．Lucy doesn’t sleep well. She has to take sleeping (pill) every night. 45．We need to speak (clear) when answering questions. 46．I can’t see the blackboard (clear) because my glasses are missing. 47．How (quick) he runs! 48．I have no time to wait. If you want to come with me, get dressed (quick). 49． (lady) and gentlemen, I am your new guide. 50．Many young (lady) wear their summer dresses in May. 51．Mr. Wu looks far (pale). What’s the matter with him? 52．You look even . Why not go to hospital? (pale) 53．Her face turned even (pale) after taking some medicine. 54．The story is about aliens from Mars (attack) the Earth. 55．The roof (屋顶) of my house needs repairing. (neighbour) 56．I’d like to buy a few (shelf) to hold all of my books. 57．Denise was glad that she was not one of the (contestant) because she was not brave. 58．By taking part in the competition, learn from one another and gain experience and maturity. (contest) 59．Of all the (wallet), I like the white one best. 60．To prevent any student (drop) out of school, Miss Zhang Guimei has kept a habit of visiting every student’s home. 能力综合实践20题 61．She had an (operate) on her right knee at the clinic. 62．Now the doctor (operate) on the injured child who was hit by a car. 63．They all felt very (shock) to hear the bad news. 64．My classmates were (shock) when they heard the bad news. 65．After dinner, Linda (usual) spends an hour playing the piano. 66．She is very (kindness), which makes everyone around her love her. 67．Andy is good at many (kind) of sports. He wants to be a sports player. 68．—How many (library) are there in your city? —3. 69．There are three (library). 70．Amy (lose) her watch this morning. She is worried. 71．It’s easy for visitors to get (lose) in this big city. 72．Where are my (key), mom? 73．You can see four (key) on the table. 74．The movie’s special effects are very (impressive), leaving a deep impression on the audience. 75．People should always follow traffic rules (prevent) any accident. 76．The here are tall and beautiful. (build) 77．Lisa is Mary’s (old) sister. 78．My (old) brother likes rice dumplings very much. They’re delicious. 79．The mother has changed the password to her kid from using the computer.(prevention) 80．We should also notice the of diseases.（prevent） 2 同步新教材，周周有练习，月月有重点！ 1 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $$ 学校:___________姓名：___________班级：___________考号：___________ Unit3 A helping hand 重点单词及词性转换进阶练80题（分层练习） 说明：此专题分三个难度层次，基础入门训练<进阶拓展训练< 能力综合实践，老师根据学生实际情况进行针对性难度训练。 基础入门训练30题 1．Connie and David are ________ (thank) for what their mother does for them. 【答案】thankful 【详解】句意：康妮和大卫非常感谢他们的妈妈为他们所做的事情。根据“are”可知，横线处需填形容词。根据提示单词“thank”可知，其形容词性为“thankful”。be thankful for表示为“对……心存感激”。故填thankful。 2．These two weeks go too (quick). 【答案】quickly 【详解】句意：这两周过得太快了。此处修饰动词go用副词quickly“快速地”。故填quickly。 3．Does go to school every day? (him) 【答案】he 【详解】句意：他每天去上学吗？此空在句中作主语，应填主格he，故填he。 4．Don’t the dog suddenly, or it may bite you. (attack) 【答案】attack 【详解】句意：不要突然攻击狗，否则它会咬你。根据“Don’t...the dog suddenly, or it may bite you.”及所给单词可知，表示不要突然攻击狗，否则它会咬你。此处考查祈使句的否定形式：Don’t后接动词原形，意为“不要做……”。attack“攻击”，动词原形，符合语境。故填attack。 5．We offered (主动提出) to look after our (neighbour) dog when she was away. 【答案】neighbour’s 【详解】句意：邻居不在家时，我们主动提出帮忙照看她的狗。neighbour“邻居”，名词。结合“our...(neighbour) dog”及所给词可知，此处表达的是邻居家的狗，要用名词所有格。故填neighbour’s。 6．The two were made by my grandparents and I have kept them for about 5 years. (wallet) 【答案】wallets 【详解】句意：这两个钱包是我的祖父母做的，我保存了大约5年。wallet“钱包”，two修饰可数名词复数，故填wallets。 7．Teenagers should do more exercise (build) a strong body. 【答案】to build 【详解】句意：青少年应该多做运动以建立强壮的身体。根据“Teenagers should do more exercise … (build) a strong body.”可知，句子中已经有谓语动词“should do”，所以“… (build) a strong body”这部分需要用非谓语动词的形式，根据句意，此处应用动词不定式来表示目的。故填to build。 8．When his grandpa heard the good news, he smiled and (nod) his head. 【答案】nodded 【详解】句意：当爷爷听到这个好消息时，他微笑着点了点头。nod“点头”，根据“smiled”可知句子用一般过去时，动词用过去式。故填nodded。 9．Body language is very common in our lives. our head means we agree with others. (nod) 【答案】Nodding 【详解】句意：肢体语言在我们的生活中很普遍。点头意味着我们赞同别人。根据“...our head means we agree with others.”及所给单词可知，此处表示点头意味着我们赞同别人，nod“点头”，动词，此处应用其动名词nodding，作主语，位于句首，首字母大写。故填Nodding。 10．Alice uses the Internet (once) a week. 【答案】once 【详解】句意：爱丽丝每周上网一次。空格后为“a week”，此处应用频度副词once，once a week意为“每周一次”，符合句意，故填once。 11．Take two if your headache doesn’t go away. (pill) 【答案】pills 【详解】句意：如果头痛没有消失，就吃两片药。pill“药片”，可数名词，two后面接可数名词复数。故填pills。 12．I am good at English and I can express myself (clear). 【答案】clearly 【详解】句意：我擅长英语，我能清晰地表达自己。根据“I can express myself...(clear)”可知，空处应用clear的副词形式clearly“清晰地”，修饰动词express。故填clearly。 13．If you’re looking for (lady) shoes, go to the second floor. 【答案】ladies’ 【详解】句意：如果你在找女鞋，去二楼。根据语境可知，此处应用复数形式ladies，表示泛指，且与空后的名词“shoes”表示所属关系，用’s所有格形式，以-s结尾的复数名词，只在词尾加’。故填ladies’。 14．People put on thick (sweat) and boots in winter. 【答案】sweater 【详解】句意：冬天人们穿上厚厚的毛衣和靴子。根据下文“and boots”可知，此处指的是衣物，sweater作名词，意为“毛衣”，符合句意，故填sweater。 15．—Millie, you move to a new community (社区). What are your new (neighbour) like? —They are friendly and helpful. It’s really lucky for me to live there! 【答案】neighbours 【详解】句意：——米莉，你搬到了一个新社区。你的新邻居们怎么样？ ——他们既友好又乐于助人。住在那里我真的很幸运！“neighbour”是名词，意为“邻居”，根据答句“They are...”可知，这里问的是多个邻居，所以要用“neighbour”的复数形式“neighbours”。故填neighbours。 16．In my study, there are a few (shelf). 【答案】shelves 【详解】句意：在我的书房里有几个架子。根据“a few”可知其后接名词复数，shelf的复数形式是shelves，故填shelves。 17．There are some (shelf) in his workshop. 【答案】shelves 【详解】句意：他的工作室里有一些架子。根据“There are some”和提示词可知，横线处需填名词复数。故填shelves。 18．—How are you?—I am great, (thank). 【答案】thanks 【详解】句意：——你怎么样啊？——我很好，谢谢。根据所给词可知，thank“多谢”，动词原型，当thank放句末表达感谢，用缩略语thanks。故填thanks。 19．Finally my teammates made me realize that (lost) a game is also a part of the game. 【答案】losing 【详解】句意：最后我的队员使我意识到输掉比赛也是比赛的一部分。根据“realize”可知that引导宾语从句，此处作宾语从句的主语，而lose“输”为动词，所以此处应填其动名词形式，故填losing。 20．I (lost) my watch yesterday. 【答案】lost 【详解】句意：我昨天把手表丢了。根据“yesterday”可知句子为一般过去时，动词应用过去式。故填lost。 21．Long ago, a farmer (lost) his horse. 【答案】lost 【详解】句意：很久以前，一个农夫丢了他的马。根据“Long ago”可知，该句时态是一般过去时，动词填过去式lost。故填lost。 22．One of the ________ passed out and was helped off the stage. (contestant) 【答案】contestants 【详解】句意：其中一位参赛者昏倒了，并被扶下了舞台。contestant“参赛者”，是可数名词；one of+复数名词，表示“……之一”，固定用法。故填contestants。 23．Andy warned us to be careful with our (wallet) while taking a bus. 【答案】wallets 【详解】句意：安迪警告我们乘公共汽车时要小心钱包。根据“our”可知，此处需要名词复数，wallets符合句意，故填wallets。 24．When a small object (drop) from a great height, it may cause serious problems. 【答案】drops 【详解】句意：当一个小物体从很高的地方掉下来的时候，它可能会造成很严重的问题。此处是when引导的从句，应用一般现在时。从句主语是“a small object”，第三人称单数，动词需用三单形式。故填drops。 25．Elena (drop) the novel she was reading on the desk and looked out the window. 【答案】dropped 【详解】句意：埃琳娜放下桌上正在看的小说，向窗外望去。根据“and looked out the window”可知，动作发生在过去，此处动词填过去式，故填dropped。 26．Dr. Brown felt tired because he had a couple of (operate) in a day. 【答案】operations 【详解】句意：布朗医生感到很累，因为他一天内做了几个手术。a couple of后接可数名词复数。operate“操作”，动词，其名词为operation“手术”，可数名词，复数形式为operations。故填operations。 27．I was so (shock) that I couldn’t speak. 【答案】shocked 【详解】句意：我震惊得说不出话来。空处位于was后修饰I，填形容词作表语。shock“震惊”，名词，其形容词为shocked“震惊的”。故填shocked。 28．A girl (sudden) stopped me and asked me whether I was Mary. 【答案】suddenly 【详解】句意：一个女孩突然拦住我，问我是不是玛丽。分析句子结构可知，此处用副词形式，作状语，修饰动词“stopped”，suddenly“突然”符合。故填suddenly。 29．I was walking in the park when (sudden) it started to rain heavily. 【答案】suddenly 【详解】句意：我正在公园里散步，突然下起了大雨。分析句子结构可知，此处应用副词形式，作状语，修饰整个句子，suddenly“突然”。故填suddenly。 30．The sky (sudden) turns dark. There will be a heavy rain. 【答案】suddenly 【详解】句意：天空突然变黑了。将有一场大雨。分析句子结构可知，此处应用副词形式，作状语，suddenly“突然”符合。故填suddenly。 进阶拓展训练30题 31．Alice (usual) visits her grandparents on Saturdays. 【答案】usually 【详解】句意：爱丽丝通常在星期六去看望她的祖父母。此处修饰动词visits用副词usually“通常”。故填usually。 32．Tigers (usual) live in the forest. 【答案】usually 【详解】句意：老虎通常住在森林。根据“Tigers...live in the forest.”及所给单词可知，此处表示老虎通常住在森林。此处需要使用副词来修饰动词live；usual的副词形式为usually。故填usually。 33．The shopping mall is full of people. We can find all (kind) of things there. 【答案】kinds 【详解】句意：购物中心都是人。我们可以在那找到各种各样的东西。根据题意和提示词可知，all kinds of“各种各样的”，固定短语。故填kinds。 34．We borrow books from the . (library) 【答案】library 【详解】句意：我们从图书馆借书。此处作宾语用名词library，“the+单词名词”表示某个特定的事物。故填library。 35．—What (happen) to Tom yesterday? —He got (lose) and asked the police for help. 【答案】 happened lost 【详解】句意：——汤姆昨天怎么了？——他迷路了，向警察求助。根据“yesterday”可知，第一空描述的是过去发生的事情，需用一般过去时，happen的过去式为happened。get lost“迷路”，固定短语。故填happened；lost。 36．Here is a set of (key) in the classroom. 【答案】keys 【详解】句意：这是教室里的一串钥匙。a set of keys“一串钥匙”。故填keys。 37． (impress) yourself in a proper way is very important. 【答案】Impressing 【详解】句意：以合适的方式给自己留下深刻印象是非常重要的。空处在句中作主语，应填动名词impressing“给……留下深刻印象”。故填Impressing。 38．You can see two tall (build) in front of you. 【答案】buildings 【详解】句意：你可以看到两座高大的建筑物在你面前。根据“two tall”可知，此处指的是“建筑物”，building“建筑物”，可数名词，空前有two修饰，名词应用复数形式， 故填buildings。 39．The Double Ninth Festival offers people a chance to love our and respect them.  (old) 【答案】elders 【详解】句意：重阳节为人们提供了一个爱护长辈、尊敬长辈的机会。根据空前的“our”可知，此处应用名词形式作宾语，根据语境可知，此处指爱护长辈，elder“长辈”，此处用复数形式，表示概数概念。故填elders。 40．She (nod) to me in greeting when I went into the room. 【答案】nodded 【详解】句意：我走进房间时，她向我点头致意。根据“when I went into the room”可知，句子时态是一般过去时，要填nod的过去式nodded。故填nodded。 41．I have been to Beijing (once). 【答案】once 【详解】句意：我去过北京一次。根据“I have been to Beijing”及所给词可知，是指去过北京一次，用副词once“一次”。故填once。 42．The project (aid) millions of poor families since 1998. 【答案】has aided 【详解】句意：该项目自1998年以来帮助了数百万贫困家庭。aid“帮助”，是动词，根据since可知句子应用现在完成时，主语是单数，助动词用has，故填has aided。 43．You should take some (medicine) and (pill) on time 【答案】 medicine pills 【详解】句意：你应该按时服用一些药物和药片。some修饰不可数名词或可数名词的复数形式，medicine作为“药物”，尤其是内服药物时，是不可数名词；pill“药片”，是可数名词，故填medicine；pills。 44．Lucy doesn’t sleep well. She has to take sleeping (pill) every night. 【答案】pills 【详解】句意：露西睡得不好。她每晚都要吃安眠药。pill“药丸”，是可数名词，此处应用名词复数表示泛指。故填pills。 45．We need to speak (clear) when answering questions. 【答案】clearly 【详解】句意：我们在回答问题时需要说得清楚明白。根据“We need to speak... ”可知，此处指的是清楚地说，副词修饰动词，clearly “清楚地”，符合语境。故填clearly。 46．I can’t see the blackboard (clear) because my glasses are missing. 【答案】clearly 【详解】句意：我看不清黑板，因为我的眼镜不见了。此处修饰动词see，用副词形式clearly“清晰地”。故填clearly。 47．How (quick) he runs! 【答案】quickly 【详解】句意：他跑得好快啊！根据“...he runs”可知，空处应填副词修饰动词，形容词quick的副词是quickly，意为“快地”，故填quickly。 48．I have no time to wait. If you want to come with me, get dressed (quick). 【答案】quickly 【详解】句意：我没有时间等了。如果你想跟我走，快点穿好衣服。根据英文句子及提示词可知，空处应用副词修饰动词get dressed；quick“迅速的”，形容词，副词为quickly。故填quickly。 49． (lady) and gentlemen, I am your new guide. 【答案】Ladies 【详解】句意：女士们先生们，我是你们的新导游。根据“and gentlemen”可知，此处用名词复数ladies“女士”，位于句首首字母需大写。故填Ladies。 50．Many young (lady) wear their summer dresses in May. 【答案】ladies 【详解】句意：许多年轻的女士在五月穿上夏装。lady“女士”，再根据“many”可知，要使用名词的复数形式，lady的复数形式是ladies。故填ladies。 51．Mr. Wu looks far (pale). What’s the matter with him? 【答案】paler 【详解】句意：吴先生看起来脸色苍白多了。他怎么了？pale苍白的，形容词；far后跟形容词比较级。故填paler。 52．You look even . Why not go to hospital? (pale) 【答案】paler 【详解】句意：你看起来更苍白。为什么不去医院呢？even甚至，更，一般修饰形容词比较级，结合句意和语境，故填paler。 53．Her face turned even (pale) after taking some medicine. 【答案】paler 【详解】句意：他吃药后她的脸色更加苍白了。空格前为“even”，故此处应用pale的比较级形式，即paler，故填paler。 54．The story is about aliens from Mars (attack) the Earth. 【答案】attacking 【详解】句意：这是个关于来自火星的外星人攻击地球的故事。根据“aliens from Mars ...the Earth”可知，外星人攻击地球的故事，此处表主动，应用现在分词作后置定语，故填attacking。 55．The roof (屋顶) of my house needs repairing. (neighbour) 【答案】neighbour’s 【详解】句意：我邻居家的屋顶需要修理。此空修饰名词house，表示所属关系，应用neighbour的名词所有格neighbour’s。故填neighbour’s。 56．I’d like to buy a few (shelf) to hold all of my books. 【答案】shelves 【详解】句意：我想买几个书架来放我所有的书。a few后接可数名词复数，shelves是shelf的复数形式。故填shelves。 57．Denise was glad that she was not one of the (contestant) because she was not brave. 【答案】contestants 【详解】句意：丹尼斯很高兴她不是参赛者之一，因为她不勇敢。contestant“参赛者”，可数名词。one of+复数名词，表示“……之一”，固定用法。故填contestants。 58．By taking part in the competition, learn from one another and gain experience and maturity. (contest) 【答案】contestants 【详解】句意：通过参加比赛，参赛者相互学习，积累经验，并更加成熟。contest“比赛”，名词。空处作主语，根据“learn from one another …”可知，主语是人，contestant“参赛者”符合语境，谓语是动词原形，主语用复数。故填contestants。 59．Of all the (wallet), I like the white one best. 【答案】wallets 【详解】句意：在所有的钱包中，我最喜欢白色的。根据“Of all the...”及所给单词可知，此处表达在所有的钱包中，空处应用复数形式，wallet“钱包”，可数名词，复数形式为wallets。故填wallets。 60．To prevent any student (drop) out of school, Miss Zhang Guimei has kept a habit of visiting every student’s home. 【答案】dropping 【详解】句意：为了防止任何学生辍学，张桂梅老师已经养成了参观每个学生家的习惯。prevent sb. doing sth.表示“阻止某人做某事”，固定搭配。故空处需动名词dropping，故填dropping。 能力综合实践20题 61．She had an (operate) on her right knee at the clinic. 【答案】operation 【详解】句意：她在诊所做了右膝手术。根据“She had an...”和“at the clinic”可知，此处指做手术，应用单数名词operation“手术”作宾语。故填operation。 62．Now the doctor (operate) on the injured child who was hit by a car. 【答案】is operating 【详解】句意：现在医生正在给那个被车撞了的孩子做手术。operate“动手术，操作”，动词，又由时间提示词“now”可知，该句表示现在正在做的事情，时态应用现在进行时，其结构为“am/is/are doing sth.”，主语the doctor为第三人称单数形式，be动词应用is。故填is operating。 63．They all felt very (shock) to hear the bad news. 【答案】shocked 【详解】句意：听到这个坏消息，他们都感到非常震惊。根据“felt very”和提示词汇可知，felt为连系动词，后接形容词，作表语，shocked为shock的形容词。故填shocked。 64．My classmates were (shock) when they heard the bad news. 【答案】shocked 【详解】句意：我的同学们听到这个坏消息时都很震惊。根据“My classmates were…when they heard the bad news.”及提示词可知，此处指的是学生们很震惊，shock“使震惊”，其形容词形式“shocked”，作表语，符合语境。故填shocked。 65．After dinner, Linda (usual) spends an hour playing the piano. 【答案】usually 【详解】句意：晚饭后，Linda通常花一个小时弹钢琴。spend为动词，需副词修饰，usual“通常的”为形容词，其副词为usually。故填usually。 66．She is very (kindness), which makes everyone around her love her. 【答案】kind 【详解】句意：她很善良，这使她周围的人都很喜欢她。kindness是名词，空处需要用形容词作表语。kind“善良的”符合题意。故填kind。 67．Andy is good at many (kind) of sports. He wants to be a sports player. 【答案】kinds 【详解】句意：安迪擅长许多种运动。他想成为一名运动员。kind“种类”是可数名词，many“许多的”后接可数名词复数。故填kinds。 68．—How many (library) are there in your city? —3. 【答案】libraries 【详解】句意：——在你们市里有多少图书馆？——3个。how many多少，提问可数名词数量；library图书馆，复数形式为libraries，故填libraries。 69．There are three (library). 【答案】libraries 【详解】句意：有三个图书馆。空处前有“three”修饰，因此应填library的复数形式libraries。故填libraries。 70．Amy (lose) her watch this morning. She is worried. 【答案】lost 【详解】句意：艾米今天早上丢了她的手表。她很担心。根据“this morning”可知，时态为一般过去时，谓语动词用过去式，lose的过去式是lost。故填lost。 71．It’s easy for visitors to get (lose) in this big city. 【答案】lost 【详解】句意：游客很容易在这个大城市里迷路。根据“visitors to get”可知，此处构成“get lost”短语，表示“迷路”。故填lost。 72．Where are my (key), mom? 【答案】keys 【详解】句意：妈妈，我的钥匙在哪？key“钥匙”，可数名词，根据are可知，空处应用复数形式keys。故填keys。 73．You can see four (key) on the table. 【答案】keys 【详解】句意：你可以在桌子上看到四把钥匙。key意为“钥匙”时是可数名词，根据“four”可知，本空应该填名词复数。故填keys。 74．The movie’s special effects are very (impressive), leaving a deep impression on the audience. 【答案】impressive 【详解】句意：这部电影的特效令人印象深刻，给观众留下了深刻的印象。根据“The movie’s special effects are very…”可知，空前为are，空处应用形容词作表语，应用impressive“令人印象深刻的”。故填impressive。 75．People should always follow traffic rules (prevent) any accident. 【答案】to prevent 【详解】句意：人们应该遵守交通规则，以防止发生事故。根据“People should always follow traffic rules ... any accident.”可知，遵守交通规则是为了防止事故的发生，用不定式表目的。故填to prevent。 76．The here are tall and beautiful. (build) 【答案】buildings 【详解】句意：这里的建筑物又高又美。根据“tall and beautiful”及提示词可知，是指建筑物又高又美，building“建筑物”，根据“are”可知，用名词复数形式。故填buildings。 77．Lisa is Mary’s (old) sister. 【答案】elder 【详解】句意：Lisa是Mary的姐姐。根据“Lisa is Mary’s...(old) sister.”可知，空处指“年长的”，需形容词比较级elder，elder sister意为 “姐姐”，故填elder。 78．My (old) brother likes rice dumplings very much. They’re delicious. 【答案】older/elder 【详解】句意：我的哥哥非常喜欢粽子。它们很美味。分析句子结构可知，空格处作定语修饰名词brother，表示“我的哥哥”，old“年老的，陈旧的”，形容词，其比较级older/elder表示“年长的”，older可作定语和表语，elder可作定语，也可作名词表示“长者”，older/elder brother意为“哥哥”。故填older/elder。 79．The mother has changed the password to her kid from using the computer.(prevention) 【答案】prevent 【详解】句意：这位母亲更改了密码，以防止她的孩子使用电脑。分析“The mother has changed the password to…her kid from using the computer.”可知，此处表示做这件事的目的，使用动词不定式作目的状语，故填prevent。 80．We should also notice the of diseases.（prevent） 【答案】prevention 【详解】句意：我们也应该注意疾病的预防。冠词the后面加名词作宾语，prevent是动词，意为“预防”，其名词形式为prevention。故填prevention。 6 同步新教材，周周有练习，月月有重点！ 11 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $$