Unit 3 What were you doing when the rainstorm came？ 过去进行时（单元核心语法精练）英语鲁教版五四学制八年级上册

Unit 3 What were you doing when the rainstorm came？ 核心语法精练（过去进行时、When/While用法） 目录 A 考点概览·知识回顾 1 B 考点夯基·专项突破 4 一、单项选择 4 二、完成句子 10 C 综合攻坚·能力跃升 11 题型 语法填空 11 过去进行时 1、 概念 表示_____________________________________的动作。 2、 结构 ________________________________________ 3、 标志词 ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 4、 句型 (1)肯定句句型结构 ________________________________________ (2) 否定句句型结构 ________________________________________ (3)一般疑问句句型结构 ________________________________________ (4)特殊疑问句句型结构 ________________________________________ 【注意】 通常不能用于过去进行时的动词主要有： ____________________________________________________________等(至少写出6个)。 判断正误。 I wasn’t understanding him.( ) I didn’t understand him. ( ) I was knowing the answer.( ) I knew the answer.( ) 探究when 与while的用法区别 ①when 的用法 既可指_______________，也可指_______________， 因此when引导的时间状语从句中的动词可以是_______________动词，也可以是_______________动词。 后接的句子可以用_______________或_______________。 引导的时间状语从句的动作和主句的动作可以_______________发生，也可以_______________发生。 ②while 的用法 只可指_______________， 因此while引导的时间状语从句中的动词必须是______________动词。后接的句子可以用_______________。 引导的时间状语主句的动作在从句动作的发生的过程中。 如果主从句动词都是延续性动词且_______________，此时时间状语从句多用_______________引导。 ③ 瞬间性动词和延续性动词的区别 瞬间性动词：表示_______________的动作，发生后_______________。 常见的有：______________________________等(至少写出3个)。 延续性动词：表示_______________动作或行为状态。 常见的有：______________________________等(至少写出3个)。 1、 单项选择 1．—Amy, you didn’t answer my call yesterday evening. What were you doing? —Sorry, I didn’t hear the ring. I ________ a book in my study. A．am reading B．have read C．was reading D．will read 2．—Helen, I didn’t see you in the classroom at five yesterday afternoon. —Oh, I ________ singing for the graduation ceremony at that time. A．will practice B．have practiced C．am practicing D．was practicing 3．—Hi, Ethan. I called you at 8:00 last night, but you didn’t answer. —Sorry, I ______ the dishes. A．wash B．washed C．am washing D．was washing 4．—Cindy, my sunglasses are on the floor and they are broken. What happened? —Sorry, dear. I don’t know. I ________ in the kitchen then. A．cook B．was cooking C．have cooked D．will cook 5．When Li Lei came into the room, his friends ________ for his birthday party. A．prepared B．are preparing C．were preparing 6．While we ________ an English song, some visitors came into our classroom. A．were singing B．sang C．are singing 7．—How did the accident happen yesterday? —A boy ________ games on the phone while walking across the street. A．plays B．is playing C．was playing 8．While we ________ an English song, some visitors came to our class. A．sing B．will sing C．were singing D．are singing 9．—I didn’t see you at the meeting yesterday. Where were you? —I ________ for a call from my daughter in Canada. A．waited B．was waiting C．have waited 10．I ________ about my sister when my phone rang. It was her! A．thought B．will think C．was thinking D．am thinking 11．—Our local dance show Dream of the Red Chamber is so hot. —Indeed. I ________ for tickets the whole morning. Luckily, I finally got one! A．fights B．will fight C．have fought D．was fighting 12．I __________ my mother in the kitchen all afternoon yesterday. A．was helping B．help C．have helped D．will help 13．Tony called his mother every week even while he __________ around the world. A．is travelling B．travels C．travelled D．was travelling 14．While I ________ my bedroom yesterday, I found my old toys. A．cleaned B．was cleaning C．clean D．have cleaned 15．They ________ a movie in the cinema when their friend called them to join a party. A．watch B．has watched C．were watching D．watched 二、用所给单词的正确形式填空 1．Our teacher (give) us a lesson when John came. 2．It is 9:00 pm now. My parents (watch) TV at this time yesterday. 3．When I got up and looked out of the bedroom window, I found, to my great surprise, it (snow) heavily. 4．The shopkeeper (talk) with an old woman when I went into the shop. 5．I knew my father (enjoy) every moment when he talked about his childhood with us. 6．We decided to stay at home because it was heavily. (rain) 7．I (read) stories to my sister while my mother was cooking. 8．Peter (have) supper with his parents yesterday when the phone rang. 9．While the children (play) happily, their parents were watching them. 三、完成句子 1．他问我，当他进来时我是否正在读小说《汤姆·索亚历险记》。 He asked me if I the novel The Adventures of Tom Sawyer when he came in. 2．当时，李莉正在复习功课，而我正在浏览新闻。 At that moment, Lily the news. 3．当他醒来时，风正在逐渐减弱。 The wind was when he woke up. 4．当我昨天见到凯特的时候，她正在等着某人经过。 When I met Kate yesterday, she was someone to . 5．当玛丽离开房间的时候，我正在弹钢琴。 I the piano when Mary left the room. 题型 短文填空 根据短文内容，用括号内所给动词的适当形式填空 Hello, I’m Peter. One day when I went by the park, I saw Lucy, Lily and Cathy. Lucy and Lily are twins. Cathy is my sister. They 1 (walk) in the park. I wanted to play with them but I was afraid that they didn’t speak to me, because I had a fight with them a few days ago. So I hid (藏) behind a tree and watched them. While I 2 (watch) them, suddenly a cat ran down the tree. The three girls were shocked. After a while they calmed down (平静下来). Then they 3 (begin) to talk about their dreams. Lucy said, “I 4 (become ) a famous doctor when grow up.” While Lily 5 (talk) about her dream, something else happened. A small boy ran to therm. While he 6 (run), he fell down. Mary stopped talking. All of us 7 (go) to help the boy. He was hurt badly. When we 8 (discuss) which hospital we would take him to, the boy’s mother arrived. Without saying anything, she 9 (call) 120 for help. While all of us 10 (wait ) for help, another accident happened. What happened? A pig appeared. 1 / 12 学科网（北京）股份有限公司 $$ Unit 3 What were you doing when the rainstorm came？ 核心语法精练（过去进行时、When/While用法） 目录 A 考点概览·知识回顾 1 B 考点夯基·专项突破 4 一、单项选择 4 二、完成句子 10 C 综合攻坚·能力跃升 11 题型 语法填空 11 过去进行时 1、 概念 表示在过去某一时刻或某一段时间正在进行的动作。 She was cleaning her room at that time.那时她正在打扫她的房间。 The children were sleeping soundly when their parents came back home. 当孩子们的父母回家时，孩子们正在熟睡。 2、 结构 主语 + was/ were + v-ing 3、 标志词 at that time /at eight last night /from...to... /at this time yesterday (morning/afternoon) the whole day /all day yesterday when/while引导的时间状语从句 He was looking for his lost dog at this time yesterday afternoon. 昨天下午这个时候他正在寻找他丢失的狗。 When the teacher entered the classroom, the students were talking loudly. 老师走进教室的时候，学生们正在大声交谈。 While I was reading, my sister was watching TV. 我在看书的时候，我妹妹在看电视。 4、 句型 (1)肯定句句型结构 主语+ was/were +v.-ing... He was doing his homework at 9:00 yesterday evening.他昨天晚上九点的时候正在做家庭作业。 (2)否定句句型结构 主语+ was/were ++not+v.-ing... She wasn't listening to the teacher in class yesterday. 她昨天上课的时候没有听老师讲课。 (3)一般疑问句句型结构 Was/Were + 主语+v.-ing...? Were you playing basketball with your friends at that time?那时你正在和你的朋友们打篮球吗？ (4)特殊疑问句句型结构 特殊疑问词+was/were（+ 主语）+v.-ing...? What were you doing when I called you last night? 我昨晚给你打电话的时候你在做什么？ 【注意】 通常不能用于过去进行时的动词主要有： agree，be，believe，belong，care，forget，hate，have(拥有)，hear，know，like，love，mean，mind，notice，own，remember，seem，suppose，understand，want，wish等。 误：I wasn’t understanding him. 正：I didn’t understand him. 我不明白他的意思。 误：I was knowing the answer. 正：I knew the answer. 我知道答案。 【辨析】 过去进行时与一般过去时的区别 过去进行时 一般过去时 过去进行时强调动作的进行过程。 I was reading a French novel last night. (不强调读完) 一般过去时强调动作的完成。 I read a French novel last night. (强调读完) 过去进行时强调动作在过去某时间正在进行。 My father was watching TV at seven yesterday. 一般过去时表示动作在过去某事件发生。 My father watched TV last night. 过去进行时强调动作的连续性， 不可与确定的频度状语连用。 The little girl was crying all afternoon yesterday. 一般过去时强调动作的反复性， 可与确定的频度状语连用。 The little girl cried five times yesterday. 探究when 与while的用法区别 ①when 的用法 When my mother came in, I was sleeping. 当我妈妈进来的时候，我正在睡觉。 My mother came in when I was sleeping.当我睡觉的时候，我妈妈进来了。 既可指时间点，也可指时间段， 因此when引导的时间状语从句中的动词可以是瞬间性动词，也可以是延续性动词。 后接的句子可以用一般过去时或过去进行时。 引导的时间状语从句的动作和主句的动作可以同时发生，也可以先后发生。 ②while 的用法 My mother came in, while I was sleeping.当我睡觉的时候，我妈妈进来了。 While I was watching TV,my mother was cooking.当妈妈做饭的时候，我在看电视。 只可指时间段， 因此while引导的时间状语从句中的动词必须是延续性动词。后接的句子可以用过去进行时。 引导的时间状语主句的动作在从句动作的发生的过程中。 如果主从句动词都是延续性动词且两个动作同时发生，此时时间状语从句多用while引导。 ③ 瞬间性动词和延续性动词的区别 瞬间性动词：表示不能延续的动作，发生后立即结束。 常见的有：open,die, close, finish,begin,buy, go,arrive,start,leave等。 Yuan Longping died four years ago.(瞬间性) 延续性动词：表示能够延续的动作或行为状态。 常见的有：learn,work,stand,lie,stay,live,sleep,wait,read等。 She read books for three hours last Sunday.(延续性) While we were dancing, a stranger came in. (延续性) I was doing my homework while my mother was cooking at that time.(延续性) 1、 单项选择 1．—Amy, you didn’t answer my call yesterday evening. What were you doing? —Sorry, I didn’t hear the ring. I ________ a book in my study. A．am reading B．have read C．was reading D．will read 【答案】C 【详解】句意：——Amy，你昨天晚上没接我的电话。你在干什么？——对不起，我没听到铃声。我当时正在书房里读书。 考查动词的时态。read阅读；am reading现在进行时；have read现在完成时；was reading过去进行时；will read一般将来时。根据“yesterday evening”和问句“What were you doing?”可知，此处是在描述过去某一时间正在进行的动作，应用过去进行时。故选C。 2．—Helen, I didn’t see you in the classroom at five yesterday afternoon. —Oh, I ________ singing for the graduation ceremony at that time. A．will practice B．have practiced C．am practicing D．was practicing 【答案】D 【详解】句意：——海伦，昨天下午五点我没看见你在教室里。——噢，那时我正在为毕业典礼练习唱歌。 考查过去进行时。根据“at five yesterday afternoon”和“at that time”可知，强调在过去的某个时间点，正在发生的动作，用过去进行时，故选D。 3．—Hi, Ethan. I called you at 8:00 last night, but you didn’t answer. —Sorry, I ______ the dishes. A．wash B．washed C．am washing D．was washing 【答案】D 【详解】句意：——嗨，伊森。我昨晚8点给你打电话，但你没有接。——抱歉，我当时正在洗碗。 考查动词时态。根据“at 8:00 last night”可知，此处指昨晚8点打电话时伊森正在洗碗，过去某一时间点正在做某事，应用过去进行时。故选D。 4．—Cindy, my sunglasses are on the floor and they are broken. What happened? —Sorry, dear. I don’t know. I ________ in the kitchen then. A．cook B．was cooking C．have cooked D．will cook 【答案】B 【详解】句意：——Cindy，我的太阳镜在地上，它们坏了。发生了什么？——对不起，亲爱的。我不知道。我当时在厨房做饭。 考查时态。根据“What happened?”和“then”可知，此处指太阳镜坏的时候正在做饭，用过去进行时“was/were doing”。故选B。 5．When Li Lei came into the room, his friends ________ for his birthday party. A．prepared B．are preparing C．were preparing 【答案】C 【详解】句意：当李雷走进房间时，他的朋友们正在为他的生日聚会做准备。 考查过去进行时。根据“When Li Lei came into the room, his friends ... for his birthday party.”可知，强调在过去的某个时间点，正在发生的动作，用过去进行时。故选C。 6．While we ________ an English song, some visitors came into our classroom. A．were singing B．sang C．are singing 【答案】A 【详解】句意：当我们唱英语歌的时候，一些参观者走进了我们的教室。 考查动词时态。分析句子可知，此处是含while引导的状语从句的复合句。参观者进入教室时，我们正在唱歌，主句用一般过去时，从句应用过去进行时“was/were+动词现在分词”。故选A。 7．—How did the accident happen yesterday? —A boy ________ games on the phone while walking across the street. A．plays B．is playing C．was playing 【答案】C 【详解】句意：——昨天的事故是怎么发生的？——一个男孩在穿过街道时正在手机上玩游戏。 考查时态。根据“How did the accident happen yesterday?”可知，此句描述的事故发生在昨天，应用过去的时态，选项中选项C“was playing”为过去进行时。故选C。 8．While we ________ an English song, some visitors came to our class. A．sing B．will sing C．were singing D．are singing 【答案】C 【详解】句意：当我们正在唱一首英文歌时，一些来访者来到我们班。 考查动词时态。根据“While”以及“some visitors came to our class”可知此句是含有while的过去进行时：was/were doing，故选C。 9．—I didn’t see you at the meeting yesterday. Where were you? —I ________ for a call from my daughter in Canada. A．waited B．was waiting C．have waited 【答案】B 【详解】句意：——昨天的会议我没见到你。你去哪儿了？——我在等我女儿在加拿大的电话。 考查动词时态。根据“I didn’t see you at the meeting yesterday”可知，是指昨天那时候正在做的事情，应用过去进行时。故选B。 10．I ________ about my sister when my phone rang. It was her! A．thought B．will think C．was thinking D．am thinking 【答案】C 【详解】句意：我正在想我妹妹的事，这时电话响了。是她打来的！ 考查过去进行时。根据“when my phone rang”可知，主句动作“想”是正在进行的背景动作，需用过去进行时（was/were doing）。故选C。 11．—Our local dance show Dream of the Red Chamber is so hot. —Indeed. I ________ for tickets the whole morning. Luckily, I finally got one! A．fights B．will fight C．have fought D．was fighting 【答案】D 【详解】句意：——我们当地的舞蹈节目《红楼梦》非常火爆。——确实如此。我整个上午都在奋力抢票。幸运的是，我终于得到了一张！ 考查时态。根据“the whole morning”可知此处表示过去某个时间段一直在做某事，用过去进行时was/were doing。故选D。 12．I __________ my mother in the kitchen all afternoon yesterday. A．was helping B．help C．have helped D．will help 【答案】A 【详解】句意：昨天整个下午我都在厨房帮妈妈干活。 考查动词时态。根据“all afternoon yesterday”可知，强调过去某个时段一直持续的动作，用过去进行时was/were doing的结构，故选A。 13．Tony called his mother every week even while he __________ around the world. A．is travelling B．travels C．travelled D．was travelling 【答案】D 【详解】句意：即使在环游世界的时候，托尼每周都给他母亲打电话。 考查时态。根据“Tony called his mother”以及“while”可知，此处描述当过去的某事发生时，另外一件事正在进行，while引导的从句用过去进行时，故选D。 14．While I ________ my bedroom yesterday, I found my old toys. A．cleaned B．was cleaning C．clean D．have cleaned 【答案】B 【详解】句意：昨天我打扫卧室时，发现了我的旧玩具。 考查过去进行时。根据题干可知，此处表示两个动作同时发生，强调一个动作（从句动作）正在进行时，另一个动作（主句动作）发生；空处属于从句动作，根据主句“I found my old toys”可知，主句时态是一般过去时，所以空处表示过去正在进行的动作，应用过去进行时。故选B。 15．They ________ a movie in the cinema when their friend called them to join a party. A．watch B．has watched C．were watching D．watched 【答案】C 【详解】句意：他们正在电影院看电影，这时他们的朋友打电话叫他们参加一个聚会。 考查时态。根据“when their friend called them to join a party”可知，此处表示过去某一时刻，正在进行的活动，应用过去进行时。故选C。 二、用所给单词的正确形式填空 1．Our teacher (give) us a lesson when John came. 【答案】was giving 【详解】句意：当约翰进来时，老师正在给我们上课。此句是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，表示当时正在发生的动作，主语是三单，be动词用was。故填was giving。 2．It is 9:00 pm now. My parents (watch) TV at this time yesterday. 【答案】were watching 【详解】句意：现在是晚上9点。我父母昨天这个时候正在看电视。根据“at this time yesterday”可知，时间状语表示过去具体的某个时刻，句子应用过去进行时“was/were+现在分词”，主语My parents为复数，watch的现在分词为watching，故填were watching。 3．When I got up and looked out of the bedroom window, I found, to my great surprise, it (snow) heavily. 【答案】was snowing 【详解】句意：当我起床并向卧室窗外望去时，令我大为惊讶的是，我发现雪下得很大。根据“When I got up and looked out of the bedroom window”可知，这里描述的是过去某个具体时间点正在发生的动作，用过去进行时，其结构是“was/were+现在分词”，主语“it”是单数，所以be动词用was，snow的现在分词是snowing，故填was snowing。 4．The shopkeeper (talk) with an old woman when I went into the shop. 【答案】was talking 【详解】句意：我走进店里的时候，那位店员正在和一位一位老妇人说话。根据“when I went into the shop.”可知，此处强调过去某一时刻正在发生的事情，主句应用过去进行时，主语为The shopkeeper，be动词用was，talk的现在分词为talking。故填was talking。 5．I knew my father (enjoy) every moment when he talked about his childhood with us. 【答案】was enjoying 【详解】句意：当我爸爸和我们谈论他的童年的时候，我知道他享受每时每刻。根据“when he talked about his childhood with us.”可知，句子用过去进行时，表示在过去某个时间点正在进行的动作。故填was enjoying。 6．We decided to stay at home because it was heavily. (rain) 【答案】raining 【详解】句意：我们决定待在家里，因为雨正下得很大。根据“We decided to stay at home”及“was”可知because引导的原因状语从句应采用过去进行时，其谓语结构为：was/were+现在分词，动词rain的现在分词为raining。故填raining。 7．I (read) stories to my sister while my mother was cooking. 【答案】was reading 【详解】句意：妈妈做饭的时候，我在给妹妹读书。根据“while my mother was cooking”可知，当while引导的时间状语从句强调两个动作同时进行，主从句都用进行时，结合was可知，此处是过去进行时，主语是I，was reading符合句意，故填was reading。 8．Peter (have) supper with his parents yesterday when the phone rang. 【答案】was having 【详解】句意：彼得昨天正在和他的父母吃晚饭，这时电话响了。根据“Peter...supper with his parents yesterday when the phone rang.”可知，强调在过去的时间点正在发生的动作，用过去进行时，故填was having。 9．While the children (play) happily, their parents were watching them. 【答案】were playing 【详解】句意：当孩子们开心地玩耍时，他们的父母正在看着他们。此句是while引导的时间状语从句，主句是过去进行时，从句也用过去进行时表示同时发生的动作，主语是复数，be动词用were。故填were playing。 三、完成句子 1．他问我，当他进来时我是否正在读小说《汤姆·索亚历险记》。 He asked me if I the novel The Adventures of Tom Sawyer when he came in. 【答案】 was reading 【详解】根据中英文对照可知，read表示“阅读”，动词。根据题干可知，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过去正在进行的动作，主语是I，be用was。故填was；reading。 2．当时，李莉正在复习功课，而我正在浏览新闻。 At that moment, Lily the news. 【答案】was reviewing lessons while I was looking through 【详解】review lessons“复习功课”，while“当……时”，look through“浏览”，强调过去正在发生的事情，用过去进行时的结构，Lily是第三人称单数形式，助动词是was，根据I可知，助动词也用was，故填was reviewing lessons while I was looking through。 3．当他醒来时，风正在逐渐减弱。 The wind was when he woke up. 【答案】 dying down 【详解】die down的意思是“逐渐消失，逐渐减弱”。根据句意可知，句子应用过去进行时，动词用现在分词。故填dying；down。 4．当我昨天见到凯特的时候，她正在等着某人经过。 When I met Kate yesterday, she was someone to . 【答案】 waiting for walk by 【详解】根据中英文对照可知，前两空缺少了“等着”，英文表达为wait for，时态为过去进行时，wait的现在分词为waiting；后两空缺少了“经过”，英文表达为walk by，不定式结构后面加动词原形。故填waiting；for；walk；by。 5．当玛丽离开房间的时候，我正在弹钢琴。 I the piano when Mary left the room. 【答案】 was playing 【详解】根据中英文句子对比可知，此处需表达“正在弹（钢琴）”。根据“when Mary left the room”可知，从句用一般过去时，主句表示过去某个时刻正在进行的动作，需用过去进行时，结构为“was/were + 现在分词”。主语为I，be动词用was；“弹钢琴”的英文表达为play the piano，play的现在分词为playing。故填was；playing。 题型 短文填空 根据短文内容，用括号内所给动词的适当形式填空 Hello, I’m Peter. One day when I went by the park, I saw Lucy, Lily and Cathy. Lucy and Lily are twins. Cathy is my sister. They 1 (walk) in the park. I wanted to play with them but I was afraid that they didn’t speak to me, because I had a fight with them a few days ago. So I hid (藏) behind a tree and watched them. While I 2 (watch) them, suddenly a cat ran down the tree. The three girls were shocked. After a while they calmed down (平静下来). Then they 3 (begin) to talk about their dreams. Lucy said, “I 4 (become ) a famous doctor when grow up.” While Lily 5 (talk) about her dream, something else happened. A small boy ran to therm. While he 6 (run), he fell down. Mary stopped talking. All of us 7 (go) to help the boy. He was hurt badly. When we 8 (discuss) which hospital we would take him to, the boy’s mother arrived. Without saying anything, she 9 (call) 120 for help. While all of us 10 (wait ) for help, another accident happened. What happened? A pig appeared. 【答案】 1．were walking 2．was watching 3．began 4．will become/am going to become 5．was talking 6．was running 7．went 8．were discussing 9．called 10．were waiting 【导语】本文讲述彼得在公园里看见了露西、丽丽和凯西。他躲在树后看她们谈论自己的理想，期间还看到了一些意外发生了。 1．句意：她们正在公园里散步。根据“One day when I went by the park, I saw Lucy, Lily and Cathy.”和所给词汇可知，我应该是看到她们正在散步，应用过去进行时was/were doing，因为主语They是第三人称复数，故用were doing。故填were walking。 2．句意：当我正在看她们时，一只猫从树上跑下来。根据“While I...(watch) them”可知，while引导时间状语从句，后接延续性动词，此处应用过去进行时was/were doing，因为主语I是第一人称单数，故用was doing。故填was watching。 3．句意：然后她们开始谈论她们的梦想。根据句意和所给单词可知，本文描述过去发生的事情，应用一般过去时，“begin”“开始”的过去式是“began”。故填began。 4．句意：当我长大了我想成为一位著名的医生。根据“I...(become ) a famous doctor when grow up.”可知，本句是含有when引导的时间状语从句，遵循主将从现原则，因此从句应用一般将来时will do或am/is/are going to do，主语I是第一人称，故可以am going to do。故填will become/am going to become。 5．句意：当丽丽正在谈论她的梦想时，别的事情发生了。根据“While Lily...(talk) about her dream”可知，while引导时间状语从句，后接延续性动词，此处应用过去进行时was/were doing，因为主语Lily是第三人称单数，故用was doing。故填was talking。 6．句意：当他正在跑的时候，他摔倒了。根据“While he...(run)”可知，while引导时间状语从句，后接延续性动词，此处应用过去进行时was/were doing，因为主语he是第三人称单数，故用was doing。故填was running。 7．句意：我们所有人都过去帮助那个男孩。根据句意和所给单词可知，本文描述过去发生的事情，应用一般过去时，“go”“去”的过去式是“went”。故填went。 8．句意：当我们正在讨论我们要把他送去哪个医院时，男孩的妈妈到了。根据“When we...(discuss) which hospital we would take him to, the boy’s mother arrived.”可知，when引导时间状语从句，后接延续性动词，此处应用过去进行时was/were doing，因为主语we是第一人称复数，故用were doing。故填were discussing。 9．句意：她什么也没说，打了120求助。根据句意和所给单词可知，本文描述过去发生的事情，应用一般过去时，“call”“打电话”的过去式是“called”。故填called。 10．句意：当我们所有人正在等待救援时，另一个事故发生了。根据“While all of us...(wait ) for help, another accident happened.”可知，while引导时间状语从句，后接延续性动词，此处应用过去进行时was/were doing，因为主语all of us是第一人称复数，故用were doing。故填were waiting。 1 / 12 学科网（北京）股份有限公司 $$