Unit 8 Making a Difference 单元语法（现在完成时）-2025-2026学年八年级英语下册单元重难点易错题精练（人教版）

Unit 8 Making a Difference 现在完成时(2) （时间：40分钟，满分：100分） 一、单项选择(本大题共20小题，每小题2分，共40分) 1．—Are you a basketball player at your school? —Yes. I ________ the team 3 years ago. I ________ on it for 3 years. A．joined; was B．have joined; have C．joined; have been D．have joined; have been 【答案】C 【详解】句意：——你是你们学校的篮球运动员吗？——是的。我三年前加入了这支球队。我在球队中已经三年了。 考查一般过去时和现在完成时。根据“3 years ago”可知，这是表示过去的时间点，所以应该用一般过去时，第一个空用动词用过去式“joined”；“for 3 years”表示一段时间，常与现在完成时连用，且动词需要用延续性动词，“have been”符合。故选C。 2．Jack ________ Rose in 2000. That is to say, they ________ for 20 years. A．got married with; have got married B．got married to; have married C．married; have been married D．married to; have been married 【答案】C 【详解】句意：杰克于2000年与罗斯结婚。也就是说，他们已经结婚20年了。 考查动词时态。marry sb./get married to sb“与某人结婚”，根据“in 2000”可知，第一句是一般过去时，动词用过去式；“for+一段时间”要与现在完成时连用，且动词要用延续性动词，be married是延续性动词。故选C。 3．—Mum, when will Dad be back? He ________ for a week. —If all goes smoothly, he should arrive home tomorrow afternoon. A．left B．has left C．has been away D．is leaving 【答案】C 【详解】句意：——妈妈，爸爸什么时候回来？他已经离开一个星期了。  ——如果一切顺利，他应该明天下午到家。 考查时态辨析。时间状语“for a week”表示延续了一段时间，需搭配现在完成时，可排除选项A和D；“for a week”需搭配可延续性动词，leave离开，是短暂性动词，故排除B。故选C。 4．—Sorry, I’m late. —It doesn’t matter. The meeting ________ for just several minutes. You don’t miss too much. A．began B．has begun C．has been on D．has been over 【答案】C 【详解】句意：——抱歉，我迟到了。——没关系，会议才开几分钟。你没有错过太多。 考查现在完成时。根据“for just several minutes”可知，时态用现在完成时have/has done，且与一段时间连用，动词用延续性动词；根据“You don’t miss too much.”可知，是指会议才开几分钟，begin“开始”，是短暂性动词，应转为对应的延续性动词be on。故选C。 5．Mr. Brown ________ his hometown since he joined the army. A．has left B．left C．has been away D．has been away from 【答案】D 【详解】句意：布朗先生自从参军以来就离开了家乡。 考查现在完成时。has left已经离开，left为短暂性动词；left离开，一般过去时；has been away已经离开，延续性动词，后面不能直接加地点；has been away from已经离开某地，是延续性动词。根据“since he joined the army”可知since引导的时间状语从句，从句用一般过去时，主句用现在完成时，且动词要用延续性动词。leave是短暂性动词，be away from是延续性动词。故选D。 6．I ________ Lily’s dictionary for one week. I need to return it to her next Friday. A．borrowed B．have borrowed C．have kept D．kept 【答案】C 【详解】句意：莉莉的字典我已经借了一个星期了。我需要在下周五还给她。 考查现在完成时和延续性动词。borrow借入（非延续动词）；keep保有（延续性动词）。“for+一段时间”常与现在完成时连用，谓语动词要用延续性动词。故选C。 7．Hurry up! The piano concert ________ for five minutes. A．had begun B．has been on C．has begun D．began 【答案】B 【详解】句意：快点，钢琴音乐会已经开始五分钟了。 考查延续性动词。本句的时间状语for five minutes要求其语动词必须是延续性的。而begin“开始”为瞬间动词，其延续意义可以用be on来表达。故选B。 8．How long have you ________ the English club? A．joined B．been in C．taken part in 【答案】B 【详解】句意：你在英语俱乐部呆多久了？ 考查延续性动词与非延续性动词。joined参加，非延续性动词；been in加入，与have构成现在完成时，延续性动词；taken part in参加，非延续性动词。根据“How long”可知，此处表示一段时间，应用延续性动词。故选B。 9．—How long ________ you ________ this book? —For about one week. I ________ it from the library last Tuesday. A．have; borrowed; borrowed B．have; kept; borrowed C．did; keep; have borrowed D．will; keep; have borrowed 【答案】B 【详解】句意：——你有这本书多久了？——大约一周。上周二我从图书馆买的。 考查时态以及延续性动词和非延续性动词。根据“How long...”可知此处和时间段连用，和延续性动词连用，故排除A；根据“last Tuesday”可知第二个句子用一般过去时，动词用过去式，排除CD。故选B。 10．—________ did the 2023 Wuxi Marathon finish?   —It ________ for nearly one month. A．When; has finished B．How long; has been over C．When; has been over D．How long; has finished 【答案】C 【详解】句意：——2023年无锡马拉松何时结束？——已经结束将近一个月了。 考查特殊疑问词及现在完成时用法。When何时；How long多长时间。根据“...did the 2023 Wuxi Marathon finish? 可知，finish为短暂性动词，应用when提问；再根据“for nearly one month.”可知，本句时态为现在完成时，其结构为：have/has+done，且句中动词用延续性动词，finish对应的延续性动词为be over。故选C。 11．—Dad, please change the channel. Our school is on TV at 8:00 tonight. —I watched it just now. It ________ for a while. A．has finished B．was over C．has been over D．finished 【答案】C 【详解】句意：——爸爸，请换频道。我们学校今晚8点在电视上播出。——我刚才看了。已经结束一段时间了。 考查现在完成时。根据“for a while”可知，此处应使用现在完成时，finish是短暂性动词，此处改为其延续性动词be over。故选C。 12．—Where did you go during the holiday? —I ________ Sanya for 2 weeks and I came back last week. A．went to B．have gone to C．was in 【答案】C 【详解】句意：——你假期去了哪里？——我在三亚待了两个星期，上周回来了。 考查一般过去时。went to去；have gone to某人去了某地，现在还没有回来；was in在。根据“I...Sanya for 2 weeks and I came back last week.”可知，是在三亚待了两周，应该用延续性动词，时态为一般过去时。故选C。 13．— How long have you ________ the English club? — Only 3 months. But I have improved my English a lot. A．joined B．been in C．become a member of 【答案】B 【详解】句意：——你加入英语俱乐部多久了?  ——只有3个月。但是我的英语进步了很多。 考查现在完成时态。根据问句中 的“How long”以及答语“Only 3 months”可知，句子的谓语动词要用延续性动词。选项A和选项C都是短暂性动词，需排除。故选B。 14．—Where is your father? I haven’t seen him for days. —He ________ Shanghai on business for a week and won’t be back until next week. A．has been in B．has been to C．has gone to D．went to 【答案】A 【详解】句意：——你父亲在哪里？我好几天没见到他了。——他去上海出差一个星期了，要到下星期才能回来。 考查时态。has been in待在某地；has been to去过，已经回来；has gone to去了，还未回来。根据“Shanghai on business for a week”可知他去上海，还未回来，此处和时间段连用要用延续性动词has been in。故选A。 15．Juliet speaks Chinese very well. She ________ in China since 2002. A．come B．has come C．stayed D．has stayed 【答案】D 【详解】句意：朱丽叶中文说得很好。自2002年以来，她一直留在中国。 考查现在完成时和延续性动词。come来；has come来（现在完成时）；stayed停留；has stayed停留（现在完成时）。根据句中时间标志词“since 2002”，可知句子时态应用现在完成时，come是短暂性动词不能与表示一段时间的状语连用。故选D。 16．—How long has Henry’s father ________?  —For two months. A．left China B．bought the car C．joined the club D．been dead 【答案】D 【详解】句意：——亨利的父亲去世多久了？——两个月。 考查现在完成时。句中用的是现在完成时，根据“For two months”可知，其谓语动词只能是表示持续的动作，而不能是短暂动词，left“离开”、bought“买”和joined“参加”都是短暂动词，been dead表示一种状态，符合题意。故选D。 17．—Where is Lucy?      —She ________ Beijing. She will come back next week. A．has been in B．has gone to C．has been to D．has gone 【答案】B 【详解】句意：——露西在哪里？——她去北京了。她下周会回来。 考查现在完成时中“have/has been to”和“have/has gone to”的区别。has been in表示“一直在某地”；has gone to表示“去了某地，尚未返回”；has been to表示“去过某地，已返回”；has gone走了。根据“She will come back next week.”可知，露西现在不在说话地点，去了北京但尚未返回，需用has gone to。故选B。 18．—Where is Jane? —She ________ the library. A．has been to B．has gone to C．has been in D．has been at 【答案】B 【详解】句意：——简在哪里？——她去了图书馆。 考查现在完成时。has been to表示去过某地，但现在已经回来了；has gone to表示去了某地，现在还在那里，没有回来；has been in/has been at表示在某个地方待了一段时间，但通常用于描述状态或持续时间。根据“Where is Jane?”可知，问题询问简的当前位置，且简不在此处，“has gone to”符合题意。故选B。 19．Tom’s Chinese ________ a lot since he came to our school. He often practices it with us. A．improves B．has improved C．will improve D．improved 【答案】B 【详解】句意：自从汤姆来到我们学校，他的中文已经提高了很多。他经常和我们一起练习。 考查现在完成时。根据句中的时间状语“since he came to our school”可知，动作从过去持续到现在，强调对现在的影响或结果，应用现在完成时，其谓语结构为have/has+过去分词。故选B。 20．Since its invention in the 1940s, the computer ________ smaller and smaller in size. A．has become B．is becoming C．will become D．became 【答案】A 【详解】句意：自从20世纪40年代发明以来，计算机的尺寸变得越来越小。 考查动词时态。根据“Since its invention in the 1940s”可知，句子应用现在完成时，其结构为“have/has+过去分词”，此处应用has become。故选A。 二、单词拼写(本大题共20小题，每小题2分，共40分) 21．My sister (be) in China for 5 years and she misses home. 【答案】has been 【详解】句意：我的姐姐在中国已经5年了，她很想家。根据“for 5 years”可知，句子应用现在完成时，主语为My sister，助动词用has，be的现在分词为been。故填has been。 22．Mr. Yuan Longping (die) for three years, but people still remember him. 【答案】has been dead 【详解】句意：袁隆平先生已经去世三年了，但人们还记得他。根据“for three years”可知，句子时态为现在完成时，其结构为have/has done，且应用延续性动词，die对应的延续性动词是be dead，主语是第三人称单数，助动词应用has，be的过去分词是been。故填has been dead。 23．Lucy in Germany since her parents got their jobs there. (study) 【答案】has studied 【详解】句意：自从露西的父母在德国找到工作后，她就一直在那里学习。根据“Lucy...in Germany since her parents got their jobs there.”可知，此处是“现在完成时+since+一般过去时”，强调动作已经完成，主语是“Lucy”，助动词用has。故填has studied。 24．Great changes (take) place in my hometown since 2010. 【答案】have taken 【详解】句意：自从2010年，我的家乡发生了巨大的变化。根据“since 2010”可知，句子应用现在完成时，主语为Great changes，助动词用have，take的过去分词为taken。故填have taken。 25．So far, I (read) a lot of books about robots. 【答案】have read 【详解】句意：到目前为止，我已经读了很多关于机器人的书。“so far”意思是“到目前为止”，是现在完成时的标志性时间状语，现在完成时的结构是“have/has+过去分词”；本句主语是“I”，所以用“have”，“read”的过去分词形式还是“read”。故填have read。 26．Miss Wu (teach) in this school for fifteen years. 【答案】has taught 【详解】句意：吴老师在这个学校教了15年了。teach教、讲授、教授，动词，其过去分词是taught。根据“for fifteen years”可知，题干应用现在完成时，结构是“have/has+过去分词”。主语是单数，所以助动词用has。故填has taught。 27．Alice (keep) these books since a month ago. 【答案】has kept 【详解】句意：爱丽丝自从一个月之前就保存着这些书。“keep”是动词，表达“保持，保存”。根据“since a month ago.”可知句子是现在完成时，主语是第三人称单数，谓语动词用“has kept”。故填has kept。 28．He (own) the car for many years. 【答案】has owned 【详解】句意：这辆车他已经拥有多年了。根据“for many years”可知是现在完成时，结构为have/has done；主语he为第三人称单数，故填has owned。 29．Ten years has passed since my sister (join) the charity. 【答案】joined 【详解】句意：自从我妹妹加入这个慈善机构以来，已经十年了。根据“Ten years has passed since my sister”可知，since是自从之意，引导从句时，从句时态用一般过去时，join的过去式是joined；故填joined。 30．His friends (donate) blood many times since 2012. 【答案】have donated 【详解】句意：自2012年以来，他的朋友们多次献血。根据“since 2012.”可知句子是现在完成时，主语是复数，助动词用have，故填have donated。 31．They (know) each other for twenty years. 【答案】have known 【详解】句意：他们认识已经二十年了。know“认识，了解”，是动词，根据“for twenty years.”可知句子用现在完成时，主语是they，助动词用have，故填have known。 32．Mark (live) there since he was born. 【答案】has lived 【详解】句意：马克从出生起就住在那里。根据“since he was born”可知，since引导的时间状语从句中，从句用一般过去时，主句用现在完成时，主语是Mark，助动词用has，live的过去分词是lived。故填has lived。 33．Mike and I have been friends since we first (meet). 【答案】met 【详解】句意：迈克和我从第一次见面就一直是朋友。since引导的时间状语从句，主句时态用现在完成时，从句中时态用一般过去时，meet的过去式形式为met。故填met。 34．He (write) a few letters to his family since he left his hometown. 【答案】has written 【详解】句意：自从他离开家乡后，他已经给家里写了一些信。根据“since he left his hometown”可知用现在完成时，其结构为have/has done，主语“He”后用助动词has，其后过去分词为written。故填has written。 35．I (play) the piano since I was 7 years old. 【答案】have played 【详解】句意：我从7岁起就开始弹钢琴了。根据“since I was 7 years old”可知主句用现在完成时，主语是I，助动词用have。故填have played。 36．The movie (begin) for over ten minutes. 【答案】has been on 【详解】句意：这部电影已经开始超过十分钟了。根据“for over ten minutes”可知，此处需要用现在完成时态，表示动作从过去开始持续到现在。主语“The movie”为第三人称单数，因此用has。begin是短暂性动词，此处应用延续性动词be on。故填has been on。 37．—May I speak to Wang Hong? —Sorry, she is not at home. She (go) to Beijing. 【答案】has gone 【详解】句意：——我可以和王红通话吗？——抱歉，她不在家。她去北京了。根据“she is not at home”可知，她不在家，也就是说她去了北京还没回来，用现在完成时“have/has done”，主语为“She”，助动词用has，go的过去分词为gone。故填has gone。 38．Jack (be) to Qingdao with his parents twice. 【答案】has been 【详解】句意：杰克和他的父母去过青岛两次。根据“twice”可知去过两次，已经回来了，用have been to，主语Jack后接助动词has。故填has been。 39．—Is the baby still asleep in bed? —No. He (wake) for a while. 【答案】has been awake 【详解】句意：——婴儿还在床上睡觉吗？——没有。他醒了一段时间了。根据“for a while”可知，此句时态为现在完成时，且谓语动词为延续性动词，wake的延续性动词为be awake；主语“he”为第三人称单数，谓语结构为has done。故填has been awake。 40．She (not become) a good swimmer yet. 【答案】hasn’t become 【详解】句意：她还没有成为一名优秀的游泳运动员。句子中出现时间标志词“yet”，“yet”常用于现在完成时的否定句中，表“尚未、还没”，因此句子需用现在完成时，现在完成时的否定结构为“主语 + have/has not + 动词过去分词”，主语“She”是第三人称单数，助动词需用“has”，“has not”可缩写为“hasn’t”；动词“become”的过去分词形式仍为“become”。故填hasn’t become。 三、完成句子(本大题共10小题，每小题2分，共20分) 41．His father has been dead for five years. (改为同义句) His father has been dead five years . 【答案】 since ago 【详解】句意：他的父亲已经去世五年了。题干中“for + 一段时间”表示动作持续的时长，可与“since + 一段时间 + ago”进行同义转换，since five years ago表示“自从五年前以来”，能体现出从过去某一时间点（五年前）到现在的持续状态。故填since；ago。 42．They have been in Canada for five years. (改为同义句) They have been in Canada five years . 【答案】 since ago 【详解】句意：他们在加拿大已经五年了。原句使用“for+时间段”，表示动作或状态从过去持续到现在；改为同义句时，可以用“since+时间点”结构表达相同含义，即转换为“since five years ago”，意为“自从五年前”，表示从五年前开始一直持续到现在的状态。故填since；ago。 43．自从杰克五天前去了英国，我还没收到他的来信。 I Jack since he went to the UK five days ago. 【答案】 haven’t heard from 【详解】根据中英文对照可知，空格处缺“还没收到……的来信”。hear from sb.意为“收到某人的来信”，由“since”引导的时间状语从句可知，主句应用现在完成时，其结构为“have/has + 过去分词”；主语是I，助动词用have，否定形式为haven’t，hear的过去分词是heard。故填haven’t heard from。 44．I bought this book three months ago. (改为同义句) I    the book for three months. 【答案】 have had 【详解】句意：我三个月前买了这本书。分析句子结构可知，空格处为本句谓语动词，“for three months”为固定结构“for+一段时间”，常与现在完成时连用，故本句应用现在完成时，且动词应用延续性动词；主语为I，谓语动词用复数形式，故第一空应填have；原句中bought为短暂性动词，不能与表示一段时间的“for three months”连用，应改为相对应的延续性动词have，第二空应填其过去分词形式had。故填have；had。 45．This shop opened three days ago. (改为同义句) This shop has for three days. 【答案】 been open 【详解】句意：这家商店是三天前营业的。原句用的是一般过去时，要求转换成时态为现在完成时的句子，其结构为“have/has done”；open不是延续性动词，在现在完成时中不能和表示一段时间的时间状语连用，要将“open”改为“be open”。故填been；open。 46．这本字典我已经买了三年，我仍然在用它。 I have already this dictionary three years and I still use it now. 【答案】 had for 【详解】根据中英文对照可知，首句时态为现在完成时，其结构为“have/has done”；此处与一段时间连用，应用延续性动词have“拥有”，表示“买”的意思，其过去分词为had；“for+时间段”表示“一段时间”。故填had；for。 47．I bought this backpack five years ago.(改为同义句) I this backpack since five years ago. 【答案】 have had 【详解】句意：我五年前买了这个背包。根据改写后的句子“since five years ago”可知，时态用现在完成时，主语是I，助动词用have，动词要用延续性动词，buy是短暂性动词，延续性动词是have，故填have；had。 48．当我到达电影院时，电影开始已经10分钟了。 When I got to the theater, the movie has for ten minutes. 【答案】 been on 【详解】该句为when引导的时间状语从句，主句“the movie has ... for ten minutes”时态为现在完成时，“for ten minutes”表示一段时间，谓语动词要用延续性动词。“开始”begin是非延续性动词，其对应的延续性动词是“be on”，意为“上映，在进行”。现在完成时的结构是“have/has+过去分词”，be的过去分词是been。故填been；on。 49．我的祖父母已经结婚超过50年了。 My grandparents have been for over 50 years. 【答案】married 【详解】此处是现在完成时，在be动词后，表示已婚状态用短语“be married”，故填married。 50．Jack非常思念他爸爸，他想知道他爸爸去天津出差多久了。 Jack misses his father so much that . 【答案】he wonders how long his father has been in Tianjin on business 【详解】对比所给中英文可知，设空处为“他想知道他爸爸去天津出差多久了”；他“he”；想知道“wonder”，时态为一般现在时，此处用三单形式；多久“how long”，引导宾语从句，从句用陈述句语序，时态是现在完成时；他爸爸“his father”；去天津“be in Tianjin”，延续性动词，此处应填has been in Tianjin；出差“on business”。故填he wonders how long his father has been in Tianjin on business。 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 $ Unit 8 Making a Difference 现在完成时(2) （时间：40分钟，满分：100分） 一、单项选择(本大题共20小题，每小题2分，共40分) 1．—Are you a basketball player at your school? —Yes. I ________ the team 3 years ago. I ________ on it for 3 years. A．joined; was B．have joined; have C．joined; have been D．have joined; have been 2．Jack ________ Rose in 2000. That is to say, they ________ for 20 years. A．got married with; have got married B．got married to; have married C．married; have been married D．married to; have been married 3．—Mum, when will Dad be back? He ________ for a week. —If all goes smoothly, he should arrive home tomorrow afternoon. A．left B．has left C．has been away D．is leaving 4．—Sorry, I’m late. —It doesn’t matter. The meeting ________ for just several minutes. You don’t miss too much. A．began B．has begun C．has been on D．has been over 5．Mr. Brown ________ his hometown since he joined the army. A．has left B．left C．has been away D．has been away from 6．I ________ Lily’s dictionary for one week. I need to return it to her next Friday. A．borrowed B．have borrowed C．have kept D．kept 7．Hurry up! The piano concert ________ for five minutes. A．had begun B．has been on C．has begun D．began 8．How long have you ________ the English club? A．joined B．been in C．taken part in 9．—How long ________ you ________ this book? —For about one week. I ________ it from the library last Tuesday. A．have; borrowed; borrowed B．have; kept; borrowed C．did; keep; have borrowed D．will; keep; have borrowed 10．—________ did the 2023 Wuxi Marathon finish?   —It ________ for nearly one month. A．When; has finished B．How long; has been over C．When; has been over D．How long; has finished 11．—Dad, please change the channel. Our school is on TV at 8:00 tonight. —I watched it just now. It ________ for a while. A．has finished B．was over C．has been over D．finished 12．—Where did you go during the holiday? —I ________ Sanya for 2 weeks and I came back last week. A．went to B．have gone to C．was in 13．— How long have you ________ the English club? — Only 3 months. But I have improved my English a lot. A．joined B．been in C．become a member of 14．—Where is your father? I haven’t seen him for days. —He ________ Shanghai on business for a week and won’t be back until next week. A．has been in B．has been to C．has gone to D．went to 15．Juliet speaks Chinese very well. She ________ in China since 2002. A．come B．has come C．stayed D．has stayed 16．—How long has Henry’s father ________?  —For two months. A．left China B．bought the car C．joined the club D．been dead 17．—Where is Lucy?      —She ________ Beijing. She will come back next week. A．has been in B．has gone to C．has been to D．has gone 18．—Where is Jane? —She ________ the library. A．has been to B．has gone to C．has been in D．has been at 19．Tom’s Chinese ________ a lot since he came to our school. He often practices it with us. A．improves B．has improved C．will improve D．improved 20．Since its invention in the 1940s, the computer ________ smaller and smaller in size. A．has become B．is becoming C．will become D．became 二、单词拼写(本大题共20小题，每小题2分，共40分) 21．My sister (be) in China for 5 years and she misses home. 22．Mr. Yuan Longping (die) for three years, but people still remember him. 23．Lucy in Germany since her parents got their jobs there. (study) 24．Great changes (take) place in my hometown since 2010. 25．So far, I (read) a lot of books about robots. 26．Miss Wu (teach) in this school for fifteen years. 27．Alice (keep) these books since a month ago. 28．He (own) the car for many years. 29．Ten years has passed since my sister (join) the charity. 30．His friends (donate) blood many times since 2012. 31．They (know) each other for twenty years. 32．Mark (live) there since he was born. 33．Mike and I have been friends since we first (meet). 34．He (write) a few letters to his family since he left his hometown. 35．I (play) the piano since I was 7 years old. 36．The movie (begin) for over ten minutes. 37．—May I speak to Wang Hong? —Sorry, she is not at home. She (go) to Beijing. 38．Jack (be) to Qingdao with his parents twice. 39．—Is the baby still asleep in bed? —No. He (wake) for a while. 40．She (not become) a good swimmer yet. 三、完成句子(本大题共10小题，每小题2分，共20分) 41．His father has been dead for five years. (改为同义句) His father has been dead five years . 42．They have been in Canada for five years. (改为同义句) They have been in Canada five years . 43．自从杰克五天前去了英国，我还没收到他的来信。 I Jack since he went to the UK five days ago. 44．I bought this book three months ago. (改为同义句) I    the book for three months. 45．This shop opened three days ago. (改为同义句) This shop has for three days. 46．这本字典我已经买了三年，我仍然在用它。 I have already this dictionary three years and I still use it now. 47．I bought this backpack five years ago.(改为同义句) I this backpack since five years ago. 48．当我到达电影院时，电影开始已经10分钟了。 When I got to the theater, the movie has for ten minutes. 49．我的祖父母已经结婚超过50年了。 My grandparents have been for over 50 years. 50．Jack非常思念他爸爸，他想知道他爸爸去天津出差多久了。 Jack misses his father so much that . 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 $