Unit 4 Changing and Growing 语法Grammar 过去进行时和形容词构词法-2025-2026学年八年级英语上册单元重难点易错题精练（仁爱科普版2024）

班级 姓名 学号 分数 Unit 4 Changing and Growing 过去进行时和形容词构词法 （时间：60分钟，满分：100分） 一、单项选择(本大题共30小题，每小题2分，共60分) 1．I ______ TV when my father came back yesterday. A．watch B．watched C．was watching 2．Mother ________ when I got home yesterday evening. A．is cooking B．was cooking C．cooked 3．The twins were in the library this morning. They ________ with some classmates then. A．were reading B．are reading C．read 4．—Excuse me, did you see a girl in purple pass by just now? —No, sir. I _______ some fish. A．feed B．will feed C．was feeding 5．I ________ about my sister when my phone rang. It was her! A．am thinking B．thought C．will think D．was thinking 6．—Why didn’t you pick up my phone just now? — I ________ a shower when you called. A．will take B．am taking C．was taking 7．—Why did the car hit the boy? —Because the driver ________ on the phone at that time. A．is talking B．talk C．have talked D．was talking 8．My mother __________ when I got home just now. A．has cooked B．was cooking C．will cook D．cooks 9．—Oh, dear! A power cut! —Sorry, I didn’t know you ________ the computer. A．are using B．used C．use D．were using 10．—Linda, I called you at about 8:00 last night, but nobody answered. —Oh, I ________ English on the computer at that time. A．learned B．was learning C．am learning 11．—I called you at half past nine this morning, but there was no answer. —Oh, sorry. I ________ with my sister in the supermarket. A．shop B．was shopping C．shopped 12．—Why are you so late today? —Three buses went by without stopping while I ________ at the bus stop. A．am waiting B．wait C．have waited D．was waiting 13．—Did you teach those exchange students to learn Chinese this morning?   —Oh, no! I ________ a report. A．wrote B．was writing C．am writing D．would write 14．—What do you think of the talk on giant pandas last night? —I didn’t listen to it. I ________ my mum with the housework. A．helped B．was helping C．have helped D．would help 15．—It was Grandma’s call. Why didn’t you answer it? —Sorry, Dad. I ________ my bicycle in the garden. A．repaired B．am repairing C．was repairing D．will repair 16．—Why didn’t you open the door for me, Jim? —I ________ clothes in the bathroom. I didn’t hear the knock. A．was washing B．washed C．am washing D．wash 17．My mother was cooking ________ my father was reading a newspaper at eight o’clock last night. A．while B．since C．before 18．—What were you doing at 8 o’clock last night? —I ________ a book. A．read B．am reading C．was reading 19．—What did the teacher say just now? — Sorry, I didn’t catch it.  I ________ something else. A．thought B．was thinking C．am thinking D．will think 20．—What ________you ________this time yesterday?     —I was reading a book. A．were, doing B．was, doing C．is, doing D．did, do 21．—Why you stopped me playing basketball in the yard just now?   —Dad _______. A．worked B．is working C．was working 22．—What were you doing at 7:00 yesterday evening, Lisa? —I ________ up the kitchen with my mother. A．clean B．cleaned C．was cleaning D．am cleaning 23．―Did you see the man with glasses just now? ―I’m sorry, but I _________  a poem. A．read B．was reading C．am reading D．will read 24．—Do you know where your brother is, Mark? —Sorry. I ______ about a question and didn’t hear what you had said. A．was thinking B．will think C．am thinking D．was thought 25．Which of the following words uses the different suffix? A．helpful B．predict C．thoughtful D．cheerful 26．We can add the suffix “ful” to the following words, except (除了) ________. A．cheer B．taste C．noise D．help 27．The ticket for the 2024 Olympics is useless now, but I’ll keep it. The “-less” in the word “useless” means ________. A．with B．without C．full of D．from 28．Which of the following words can we add the suffix “-less” to to mean “without”? A．person B．hope C．plan D．wish 29．We can’t add “ful” to ________ to form an adjective (形容词). A．hope B．humour C．help D．cheer 30．— Why didn’t you answer my call yesterday? — Sorry, I an important meeting with my teachers at that time. A．was having B．have had C．had D．will have 二、单词拼写(本大题共20小题，每小题2分，共40分) 31．Mrs Green (cook) at this time last night. 32．My sister (listen) to music at 9 p.m. last night. 33．It (rain) heavily when we left the supermarket yesterday afternoon. 34．Sally (help) her mother in the kitchen at seven last night. 35．Peter missed my call yesterday because he (drive) home at that time. 36．Tom (study) when his friend came. 37．The boy (lie) on the bed when his mother came in. 38．—Hong Yuanyuan, I didn’t see your sister this afternoon. —She (practise) the whole afternoon to prepare for the dancing competition. 39．While we (talk), the teacher came in. 40．Bill was kicking a ball when I (see) him. 41．They arrived while we (have) a tea party in our garden. 42．Jenny’s parents opened the door while Jenny and Tina (do) the dishes. 43．My mother (sweep) the floor when I came back home from school. 44．I (wash) the dishes while my sister was sweeping the floor. 45．Mr Green (watch) TV at this time last night. 46．I’m so (thank) to my parents for their love. It’s the best thing on earth! 47．How (care) the man is! He often leaves his things at home or loses things on his way to work. 48．If you practise every day, you will (success) in playing the piano. 49．When I got home yesterday, my mom (clean) up the bathroom. 50．While she (cook), the smoke alarm went off. 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $ 班级 姓名 学号 分数 Unit 4 Changing and Growing 过去进行时和形容词构词法 （时间：60分钟，满分：100分） 一、单项选择(本大题共30小题，每小题2分，共60分) 1．I ______ TV when my father came back yesterday. A．watch B．watched C．was watching 【答案】C 【详解】句意：昨天当我的爸爸回来时，我正在看电视。 考查过去进行时。根据“when my father came back yesterday”可知此处时态为过去进行时，其谓语结构为“was/were+doing”，故选C。 2．Mother ________ when I got home yesterday evening. A．is cooking B．was cooking C．cooked 【答案】B 【详解】句意：昨天晚上我回到家时，妈妈正在厨房做饭。 考查过去进行时。根据“when I got home yesterday evening.”可知，此处是指昨天晚上我到家的时候，妈妈正在做饭。表示过去某个时间点正在进行的动作，用过去进行时，结构为was/were doing。故选B。 3．The twins were in the library this morning. They ________ with some classmates then. A．were reading B．are reading C．read 【答案】A 【详解】句意：这对双胞胎今天早上在图书馆。 那时他们正在和一些同学一起读书。 考查动词时态。根据“The twins were in the library this morning.”及“then”可知，此处指“早上看见他们的时候，他们正在做某事”，所以时态为过去进行时，其结构是was/were+现在分词，主语是They，be动词用were。故选A。 4．—Excuse me, did you see a girl in purple pass by just now? —No, sir. I _______ some fish. A．feed B．will feed C．was feeding 【答案】C 【详解】句意：——对不起，您刚才看见一个穿紫衣服的女孩经过吗？——没有，先生。我当时在喂鱼。 考查动词时态。根据“did you see a girl in purple pass by just now”可知，此处指在过去某个时刻正在进行的动作，应使用过去进行时was/were doing的结构，主语I是第一人称，be动词用was，故选C。 5．I ________ about my sister when my phone rang. It was her! A．am thinking B．thought C．will think D．was thinking 【答案】D 【详解】句意：我正在想我的妹妹，这时我的电话响了。是她！ 考查时态。根据“I...about my sister when my phone rang.”可知，此处描述的是过去某一时刻正在发生的动作，应该用过去进行时，谓语动词构成是was/were+现在分词。故选D。 6．—Why didn’t you pick up my phone just now? — I ________ a shower when you called. A．will take B．am taking C．was taking 【答案】C 【详解】句意：——为什么刚才没接我电话？——当你打电话的时候，我正在洗澡。 考查时态。will take一般将来时；am taking现在进行时；was taking过去进行时。根据“...just now?”以及“when you called”可知，when引导的从句为一般过去时，主句表动作正在进行，需用过去进行时。故选C。 7．—Why did the car hit the boy? —Because the driver ________ on the phone at that time. A．is talking B．talk C．have talked D．was talking 【答案】D 【详解】句意：—— 那辆车为什么撞到那个男孩？—— 因为司机那时正在打电话。 考查过去进行时。根据“Why did the car hit the boy?”以及时间状语“at that time”可知，句子应用过去进行时，结构为was/were doing，主语“the driver”是单数，应用was；talk的现在分词形式为talking，空处应填was talking。故选D。 8．My mother __________ when I got home just now. A．has cooked B．was cooking C．will cook D．cooks 【答案】B 【详解】句意：我刚才到家时妈妈正在做饭。 考查时态。has cooked已经煮饭了，现在完成时；was cooking正在做饭，过去进行时；will cook将做饭，一般将来时；cooks煮饭，一般现在时。结合“when” 是连接时间状语从句，主句要用进行时。故选B。 9．—Oh, dear! A power cut! —Sorry, I didn’t know you ________ the computer. A．are using B．used C．use D．were using 【答案】D 【详解】句意：——哦，天啊！停电了！——对不起，我不知道你正在用电脑。 考查过去进行时。根据“I didn’t know you...the computer”可知，不知道对方在过去的时间点正在用电脑，用过去进行时。故选D。 10．—Linda, I called you at about 8:00 last night, but nobody answered. —Oh, I ________ English on the computer at that time. A．learned B．was learning C．am learning 【答案】B 【详解】句意：——琳达，我昨晚8点左右给你打电话，但没人接。——哦，那时我在电脑上学英语。 考查过去进行时。根据“at about 8:00 last night”和“I...English on the computer at that time.”可知，此处指昨晚8点左右正在发生的动作，用过去进行时。故选B。 11．—I called you at half past nine this morning, but there was no answer. —Oh, sorry. I ________ with my sister in the supermarket. A．shop B．was shopping C．shopped 【答案】B 【详解】句意：——我今天早上9点半给你打过电话，但没人接。——哦，对不起。我和我妹妹在超市购物。 考查动词时态。shop购物，原形；was shopping过去进行时；shopped一般过去时。根据“I called you at half past nine this morning”可知是指今天早上9点半正在和妹妹在超市购物，因此需要使用过去进行时，故选B。 12．—Why are you so late today? —Three buses went by without stopping while I ________ at the bus stop. A．am waiting B．wait C．have waited D．was waiting 【答案】D 【详解】句意：——你今天为什么这么晚？——当我正在公交车站等车的时候，有三辆车经过但都没有停。 考查动词时态。根据“Three buses went by without stopping while I ... at the bus stop.”可知，此处是指我正在公交站等车时，有三辆车经过但没有停，因此空处应用进行时；根据“went”可知，主句是过去时，则从句应用过去进行时was/were doing，主语是I，be用was。故选D。 13．—Did you teach those exchange students to learn Chinese this morning?   —Oh, no! I ________ a report. A．wrote B．was writing C．am writing D．would write 【答案】B 【详解】句意：——今天早上你教那些交换生学中文了吗？——哦，没有！我在写报告。 考查动词时态。根据“Did you teach those exchange students to learn Chinese this morning?”可知，此处表示过去在某一时间段或某一段时间内正在发生或进行的动作，所以应用过去进行时。故选B。 14．—What do you think of the talk on giant pandas last night? —I didn’t listen to it. I ________ my mum with the housework. A．helped B．was helping C．have helped D．would help 【答案】B 【详解】句意：——你觉得昨天晚上关于大熊猫的访谈怎么样？——我没有听。我正在帮我妈妈做家务活。 考查时态辨析。根据语境判断设空处的动作在过去某个时刻，即“节目正在播出时”，正在进行，且动作在一段时间内持续进行，所以用过去进行时。过去进行时的构成是：主语+was/were +动词的现在分词，主语是第一人称，所以be动词用was，故选B。 15．—It was Grandma’s call. Why didn’t you answer it? —Sorry, Dad. I ________ my bicycle in the garden. A．repaired B．am repairing C．was repairing D．will repair 【答案】C 【详解】句意：——这是奶奶的电话。你为什么不接电话呢？ ——对不起，爸爸。我正在花园里修我的自行车。 考查过去进行时。根据“It was Grandma’s call. Why didn’t you answer it?”可知，奶奶来电话是发生在过去某一时刻，那时“我”正在花园里修自行车，表示过去某一时刻正在进行的动作，应用过去进行时，其结构是was/were+doing；主语为I，be动词用was，repair“修理”，动词，其现在分词为repairing。故选C。 16．—Why didn’t you open the door for me, Jim? —I ________ clothes in the bathroom. I didn’t hear the knock. A．was washing B．washed C．am washing D．wash 【答案】A 【详解】句意：——你为什么不给我开门，吉姆？——我在浴室洗衣服。我没有听到敲门声。 考查时态。根据“Why didn’t you open the door for me”可知敲门的时候正在洗衣服，用过去进行时was/were doing。故选A。 17．My mother was cooking ________ my father was reading a newspaper at eight o’clock last night. A．while B．since C．before 【答案】A 【详解】句意：昨晚八点钟，我妈妈在做饭，而我爸爸在看报纸。 考查从属连词辨析。while当……时；since自从；before在……之前。此处表示两个动作同时发生，应该用while引导时间状语从句。故选A。 18．—What were you doing at 8 o’clock last night? —I ________ a book. A．read B．am reading C．was reading 【答案】C 【详解】句意：——昨晚8点你在干什么？——我在读一本书。 考查时态。根据“What were you doing at 8 o’clock last night?”可知，时态为过去进行时，表示过去某一刻正在做什么，结构为was/were doing；主语为“I”，应用was。故选C。 19．—What did the teacher say just now? — Sorry, I didn’t catch it.  I ________ something else. A．thought B．was thinking C．am thinking D．will think 【答案】B 【详解】句意：——刚才老师说什么？——对不起，我没听到。我正在思考其他事。 考查过去进行时。根据“Sorry, I didn’t catch it.”及语境可知，应是刚在正在思考别的，所以没听到，时态是过去进行时（was/were doing）。故选B。 20．—What ________you ________this time yesterday?     —I was reading a book. A．were, doing B．was, doing C．is, doing D．did, do 【答案】A 【详解】句意：——昨天这个时候你在做什么？——我在看书。 考查动词时态。was/were+动词的现在分词，构成过去进行时；is+动词的现在分词，构成现在进行时；助动词did+动词原形，用于一般过去时中。根据“I was reading a book.”以及时间状语“this time yesterday”可知，问句使用过去进行时，主语是you，be动词用were。故选A。 21．—Why you stopped me playing basketball in the yard just now?   —Dad _______. A．worked B．is working C．was working 【答案】C 【详解】句意：——你刚才为什么不让我在院子里打篮球？——爸爸在工作。 考查时态。根据语境可知，此处说的是爸爸刚刚正在院子里工作，应用过去进行时结构，故选C。 22．—What were you doing at 7:00 yesterday evening, Lisa? —I ________ up the kitchen with my mother. A．clean B．cleaned C．was cleaning D．am cleaning 【答案】C 【详解】句意：——昨天晚上7点你在干什么，丽莎？——我和妈妈在一起打扫厨房。 考查动词时态。根据提问“What were you doing at 7:00 yesterday evening”可知，询问的是过去某个时候正在做什么，应该用过去进行时(was/were doing)，这里主语为I，故选C。 23．―Did you see the man with glasses just now? ―I’m sorry, but I _________  a poem. A．read B．was reading C．am reading D．will read 【答案】B 【详解】句意：——你刚才看见那个戴眼镜的人了吗？ ——抱歉，我刚才在读一首诗。 考查过去进行时。根据“just now”可知，提问者提问的是发生在过去的事情；根据“I’m sorry...”可知，回答者没有看到那个戴眼镜的人，所以他此处应通过强调自己过去那个时刻正在干其他事情来解释他为什么没看到，强调过去某一时刻正在发生的事情应用过去进行时。故选B。 24．—Do you know where your brother is, Mark? —Sorry. I ______ about a question and didn’t hear what you had said. A．was thinking B．will think C．am thinking D．was thought 【答案】A 【详解】句意：——你知道你哥哥在哪里吗，马克？——对不起。我正在考虑一个问题，没听到你说什么。 考查时态辨析。根据“didn’t hear what you had said”可知过去没听到说的什么，此处指对方问话那一刻正在思考一个问题，用过去进行时，其结构为was/were doing。故选A。 25．Which of the following words uses the different suffix? A．helpful B．predict C．thoughtful D．cheerful 【答案】B 【详解】句意：以下哪个单词使用了不同的后缀？ 考查单词后缀。helpful有帮助的，形容词，由词根help和后缀-ful构成；predict预测，动词，由前缀pre-和词根dict构成；thoughtful考虑周到的，形容词，由词根thought和后缀-ful构成；cheerful欢快的，形容词，由词根cheer和后缀-ful构成。选项A、C和D都有形容词后缀-ful，选项B无后缀，与其它选项不同。故选B。 26．We can add the suffix “ful” to the following words, except (除了) ________. A．cheer B．taste C．noise D．help 【答案】C 【详解】句意：我们可以给下面的单词加上后缀“-ful”组成形容词，除了noise。 考查构词法。cheerful高兴的；tasteful高雅的；helpful有帮助的。没有“noiseful”这个单词。故选C。 27．The ticket for the 2024 Olympics is useless now, but I’ll keep it. The “-less” in the word “useless” means ________. A．with B．without C．full of D．from 【答案】B 【详解】句意：2024年奥运会的门票现在没用了，但我会留着它。“useless”这个词中的“-less”意思是没有。 考查介词辨析。with具有；without没有；full of充满；from来自。根据“The ticket for the 2024 Olympics is useless now”可知，2024年奥运会的门票现在没用了，说明useless意为“无用的”，less表示否定含义，意为“没有”，与without意思一致。故选B。 28．Which of the following words can we add the suffix “-less” to to mean “without”? A．person B．hope C．plan D．wish 【答案】B 【详解】句意：下面哪个词可以加后缀“-less”表示“没有”？ 考查构词法。person人，不可以加后缀-less；hope希望，后加后缀-less，构成hopeless，形容词，意为“没有希望的”；plan希望，不可以加后缀-less；wish希望，不可以加后缀-less。故选B。 29．We can’t add “ful” to ________ to form an adjective (形容词). A．hope B．humour C．help D．cheer 【答案】B 【详解】句意：我们不能把“ful”加在humour后面，来构成一个形容词。 考查名词辨析及构词法。hope希望；humour幽默；help帮助；cheer欢呼。根据构词法可知，humour的形容词为humorous。故选B。 30．— Why didn’t you answer my call yesterday? — Sorry, I an important meeting with my teachers at that time. A．was having B．have had C．had D．will have 【答案】A 【详解】句意：——昨天你为什么不接我的电话？——抱歉，那时我正在和我的老师们开一个重要的会议。 考查动词的时态。was having过去进行时；have had现在完成时；had一般过去时；will have一般将来时。根据“at that time”可知，这是过去进行时的时间状语，表示“那时候正在做某事”。故选A。 二、单词拼写(本大题共20小题，每小题2分，共40分) 31．Mrs Green (cook) at this time last night. 【答案】was cooking 【详解】句意：格林夫人昨晚这个时候正在做饭。根据“at this time last night”可知，句子时态为过去进行时，其结构为“was/were+现在分词”；主语Mrs Green是第三人称单数，助动词用was，cook的现在分词为cooking。故填was cooking。 32．My sister (listen) to music at 9 p.m. last night. 【答案】was listening​ 【详解】句意：昨晚9点我妹妹在听音乐。根据“at 9 p.m. last night”可知，句子时态为过去进行时，主语为“My sister”，用was listening。故填was listening。 33．It (rain) heavily when we left the supermarket yesterday afternoon. 【答案】was raining 【详解】句意：昨天下午我们离开超市时，雨下得很大。根据“when we left the supermarket yesterday afternoon”可知，此处表示过去某一时刻正在发生的事情，此处应用过去进行时，主语为“It”，用was raining。故填was raining。 34．Sally (help) her mother in the kitchen at seven last night. 【答案】was helping 【详解】句意：昨晚七点钟，莎莉正在厨房帮她妈妈干活。根据“at seven last night”可知，时态应用过去进行时，结构为was/were doing；主语Sally为第三人称单数，助动词应用was。故填was helping。 35．Peter missed my call yesterday because he (drive) home at that time. 【答案】was driving 【详解】句意：彼得昨天没接到我的电话，因为他当时正在开车回家。根据“at that time”可知，此处表示的是过去某一时刻正在进行的动作，应用过去进行时，空处所在句的主语为“he”，应填was driving。故填was driving。 36．Tom (study) when his friend came. 【答案】was studying 【详解】句意：当汤姆的朋友到的时候他正在学习。根据“when his friend came”可知是指过去正在发生的动作，主句应用过去进行时，其结构为：主语+was/were doing+其他。主语是Tom，为第三人称，be动词用was。故填was studying。 37．The boy (lie) on the bed when his mother came in. 【答案】was lying 【详解】句意：妈妈进来时，男孩正躺在床上。根据“when his mother came in”可知，此处指过去正在进行的动作，用过去进行时，主语为“The boy”，所以应填was lying。故填was lying。 38．—Hong Yuanyuan, I didn’t see your sister this afternoon. —She (practise) the whole afternoon to prepare for the dancing competition. 【答案】was practising 【详解】句意：——洪圆圆，我今天下午没看到你妹妹。——她整个下午都在练习为舞蹈比赛做准备。根据“the whole afternoon”可知此处表示过去某一阶段正在发生的事情，用过去进行时，主语“She”后用be动词was，practise的现在分词形式practising。故填was practising。 39．While we (talk), the teacher came in. 【答案】were talking 【详解】句意：当我们说话的时候，老师进来了。根据“the teacher came in”可知老师进来的时候我们正在说话，用过去进行时was/were doing，主语是we，be动词用were。故填were talking。 40．Bill was kicking a ball when I (see) him. 【答案】saw 【详解】句意：我看见比尔时，他正在踢球。根据“Bill was kicking a ball”可知，when引导的从句时态为一般过去时，动词应用过去式；see“看见”，其过去式为saw。故填saw。 41．They arrived while we (have) a tea party in our garden. 【答案】were having 【详解】句意：当我们正在我们花园里进行茶会的时候，他们到了。根据主句“They arrived”，可知动作发生在过去；while“当”，引导延续性动词的句子，用过去进行时，表示在过去一段时间内持续发生的动作，结构为was/were doing，主语为“we”，助动词用were。故填were having。 42．Jenny’s parents opened the door while Jenny and Tina (do) the dishes. 【答案】were doing 【详解】句意：珍妮和蒂娜洗碗时，珍妮的父母打开了门。根据“opened”可知主句为一般过去时，所以while引导的从句用过去进行时，表示珍妮和蒂娜正在洗碗时，珍妮的父母打开了门，过去进行时的构成为：were/was+doing，又因为主语“Jenny and Tina”为复数，be用were，故填were doing。 43．My mother (sweep) the floor when I came back home from school. 【答案】was sweeping 【详解】句意：当我从学校回家时，我妈妈正在扫地。根据“when I came back home from school.”可知，空处应用过去进行时was/were+doing，主语是单数，be用was。故填was sweeping。 44．I (wash) the dishes while my sister was sweeping the floor. 【答案】was washing 【详解】句意：当我的妹妹正在扫地的时候，我正在洗碗。“while”表示前后对比时，前后句子都用进行时表示两个动作同时进行。此题中，从句“my sister was sweeping the floor”用了过去进行时，因此主句也应用过去进行时。结构为“was/were+动词的现在分词”，wash the dishes意为“洗碗”，主语为“I”，因此be动词用was，wash的现在分词为washing“洗”，故填was washing。 45．Mr Green (watch) TV at this time last night. 【答案】was watching 【详解】句意：昨晚的这个时候格林先生正在看电视。根据“at this time last night”可知，本题应该用过去进行时，主语是第三人称单数，因此be动词填was，watch现在分词是watching，故填was watching。 46．I’m so (thank) to my parents for their love. It’s the best thing on earth! 【答案】thankful 【详解】句意：我非常感谢父母的爱，这是世界上最美好的东西！thank“感谢”，可作动词或名词，此处需用形容词作表语，构成结构be thankful to sb. for sth.“因某事感谢某人”，thank的形容词形式是thankful。故填thankful。 47．How (care) the man is! He often leaves his things at home or loses things on his way to work. 【答案】careless 【详解】句意：这个人多么粗心啊！他经常把东西落在家里或上班路上弄丢东西。此句为“How+形容词+主语+谓语”的感叹句，空处填形容词。根据“He often leaves his things at home or loses things on his way to work.”可知，经常把东西落在家里或上班路上弄丢东西，说明这个人是粗心的。care“关心”，动词，careless“粗心的”，形容词。故填careless。 48．If you practise every day, you will (success) in playing the piano. 【答案】succeed 【详解】句意：如果你每天练习，你将会在弹钢琴方面取得成功。will后接动词原形，success是名词，其动词形式succeed符合要求；succeed in doing sth.是固定短语，意为“成功做某事”。故填succeed。 49．When I got home yesterday, my mom (clean) up the bathroom. 【答案】was cleaning 【详解】句意：昨天我到家时，我妈妈正在打扫浴室。根据“when I got home yesterday”可知，此处是when引导的时间状语从句，从句是一般过去时，主句应用过去进行时，强调在过去的某个时间点动作正在发生。过去进行时结构是was/were doing，主语是my mom，be动词用was，clean的现在分词是cleaning。故填was cleaning。 50．While she (cook), the smoke alarm went off. 【答案】was cooking 【详解】句意：当她在做饭的时候，烟雾警报器响了。cook“做饭”，while引导的时间状语从句，表示一个动作发生时，另一个动作正在进行，常用过去进行时，其结构为was/were + 现在分词，主语she是第三人称单数，be动词用was，cook的现在分词为cooking。故填was cooking。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $