内容正文:
班级 姓名 学号 分数
Unit 8 Natural disasters
过去进行时
(时间:60分钟,满分:100分)
1.表示过去某个时刻或某个时间段正在发生的动作
He was running at this time yesterday. [was running是过去进行时的结构]
They were having dinner from 7 to 9 p.m. yesterday.
常与【过去时间点或时间段】连用,如:
at this time yesterday 昨天这个时候
at 6 o’clock yesterday 昨天六点钟的时候
at 7 p.m. last Friday 上周五晚上七点钟
at that time 在那时 at that moment在那个时刻
2.when 与while引导的时间状语从句:
①when 既指时间点,也可指一段时间;
while只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词。
When the teacher came in, we were talking.
While we were talking, the teacher came in.
②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生;
The children were running to move the bag of rice when they heard the sound of a motor bike.
while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。
3. 过去进行时的结构
肯定句: 主语+ was/were +V-ing+其他
否定句: 主语+ was/were + not +V-ing+其他
一般疑问句: Was/Were+ 主语+V-ing+其他
肯定回答:Yes,主语(代词)+was/were.
否定回答:No.主语(代词)+wasn’t/weren’t.
特殊疑问句:特殊疑问词(what/when/where/why等)+一般疑问句
例句
【肯定】He was playing football that morning.
【否定】He wasn't playing football that morning.
【一般疑问句】--Was he playing football that morning? --Yes, he was. / No, he wasn't.
【特殊疑问句】Where was he playing football that morning?
1、 单项选择(本大题共50小题,每小题2分,共100分)
1.(23-24八年级上·江苏镇江·期末)At noon, I took a photo of some swans while they ________ on the lake.
A.dance B.are dancing C.danced D.were dancing
2.(23-24八年级上·江苏泰州·期末)—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
3.(23-24八年级上·江苏泰州·期末)—Where is your father? Is he cleaning the car?
—No, but he ________ it the whole morning.
A.cleaned B.was cleaning C.is cleaning D.cleans
4.(23-24八年级上·江苏宿迁·期末)This student ________ his bike in front of the house from 2:30 to 3:30 yesterday.
A.was repairing B.repaired C.has repaired D.is repairing
5.(23-24八年级上·江苏镇江·期末)—Tommy, did you hear what I said just now?
—Sorry, Lora. I ________ the World Cup with my brothers.
A.watch B.am watching C.will watch D.was watching
6.(22-23八年级上·江苏宿迁·期末)—What did the reporter say about the World Cup just now?
—Oh, sorry. I don’t know either. I ________ a phone then.
A.answered B.am answering C.will answer D.was answering
7.(23-24八年级上·江苏无锡·期末)—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
8.(23-24八年级上·江苏苏州·期末)—Why didn’t you attend the meeting this morning?
—I __________ the problems with Mr. Chen.
A.discuss B.was discussing C.is discussing D.discussing
9.(23-24八年级上·江苏徐州·期末)This time yesterday we ________ a snowman.
A.are making B.will make C.were making D.make
10.(23-24八年级上·江苏扬州·期末)—Did you see Anne outside the door just now?
—Sure. She ________ someone, so I nodded to her and went away.
A.phoned B.is phoning C.was phoning D.phones
11.(23-24八年级上·江苏盐城·期末)— When did your room have a power cut?
— This morning, when I ________ the math problem with my friend.
A.discuss B.discussed C.is discussing D.was discussing
12.(22-23八年级上·江苏南通·期末)—You look tired!
—I ________ the World Cup all night. You know I’m a football fan.
A.watch B.was watching
C.will watch D.am watching
13.(23-24八年级上·江苏宿迁·期末)—I called you at half past ten this morning, but there was no answer.
—Oh, sorry, I ________ with my cousin in the supermarket.
A.shop B.was shopping C.shopped D.will shop
14.(23-24八年级上·江苏扬州·期末)—Why are you so late today?
—Three buses went by without stopping while I ________ at the bus stop.
A.am waiting B.wait C.waited D.was waiting
15.(23-24八年级上·江苏南京·期末)—Did you notice him come in?
—No. I ________ a football game.
A.watch B.watched C.was watching D.am watching
16.(23-24八年级上·江苏南京·期末)—I called you yesterday afternoon but you didn’t answer.
—Sorry. I ________ a report about animal protection.
A.work on B.worked on C.am working on D.was working on
17.(22-23八年级上·江苏·期末)—It was Grandma’s call. Why didn’t you answer it?
— Sorry, Dad. I ________ my bicycle in the garden.
A.am repairing B.was repairing C.repair D.repaired
18.(22-23八年级上·江苏镇江·期末)I ________ a football match in my room when my cousin rushed in.
A.am watching B.was watching C.watched D.watch
19.(22-23八年级上·江苏南京·期末)At noon, I took a photo of some swans while they ________ on the lake.
A.dance B.are dancing C.have danced D.were dancing
20.(23-24八年级上·江苏盐城·期中)—What do you plan to do in the coming new year?
—Sorry, but what did you say? I ________ about something else.
A.think B.thought C.am thinking D.was thinking
21.(22-23八年级上·江苏泰州·期末)—Why didn’t you open the door for me?
—Sorry. I ________ a football match and didn’t hear you.
A.watched B.was watching C.will watch D.am watching
22.(22-23八年级上·江苏宿迁·期末)—Did you see Miss Li just now?
—Yes. But she ________ someone, so I nodded to her and went away.
A.phones B.is phoning C.was phoning D.will phone
23.(22-23八年级上·江苏连云港·期末)—Andy, I called you at 4:00 p.m. yesterday, but you didn’t answer it.
—Sorry. I ________ my bedroom.
A.tidy up B.will tidy up C.am tidying up D.was tidying up
24.(22-23八年级上·江苏扬州·期末)—When did your house have a power cut?
—This morning, while my mother ______ breakfast for us.
A.made B.is making C.was making D.makes
25.(22-23八年级上·江苏泰州·期末)—I called you at half past eight last Saturday evening, but nobody answered me.
—Oh, sorry. I ________ the film Home coming(《万里征途》)with my cousin in the cinema.
A.watch B.was watching C.watched D.will watch
26.(2023·江苏常州·中考真题)We ________ on the countryside road when a sudden storm hit, so we made our way back.
A.jogged B.were jogging C.have jogged D.will jog
27.(21-22八年级上·江苏宿迁·期末)—I didn’t see your mother when visiting your home yesterday afternoon.
一She ________ in the supermarket near my home.
A.shops B.shopped C.is shopping D.was shopping
28.(21-22八年级上·江苏扬州·期末)—What did the reporter say about the Winter Olympic Games just now?
—Oh, sorry. I don’t know either. I a phone then.
A.answered B.am answering C.will answer D.was answering
29.(21-22八年级上·江苏·期末)—Linda, I called you this morning but nobody answered the phone.
—I’m sorry. I ________ football with my friends on the school playground then.
A.play B.played C.am playing D.was playing
30.(21-22八年级上·江苏·期末)People were sleeping ________ the earthquake happened, so many of them lost their lives.
A.when B.while C.because D.as
31.(21-22八年级上·江苏淮安·期末)—I called you at 8:00 yesterday evening, but nobody answered.
—I’m sorry for it. My mother and I ________ in the supermarket.
A.shopped B.are shopping C.was shopping D.were shopping
32.(21-22八年级上·江苏盐城·期末)—Somebody knocked at the door just now.
—Sorry, I didn’t hear it. I ________ to the music at that time.
A.listened B.am listening C.was listening D.listen
33.(21-22八年级上·江苏扬州·期末)The engineer ________ the computer in our classroom the whole morning.
A.was fixing B.fixed C.has fixed D.is fixing
34.(21-22八年级上·江苏宿迁·期末)All the villagers in their houses ________ when the earthquake happened.
A.are sleeping B.were sleeping C.sleep D.slept
35.(21-22八年级上·江苏常州·期末)—Why didn’t you come to our party yesterday?
—Sorry. I ________ a football match on TV from 7 p.m. to 8:30 p.m. and forgot the time.
A.was watching B.watched C.am watching D.will watch
36.(21-22八年级上·江苏南京·期末)I thought I heard him come in while we ________ dinner.
A.was having B.were having C.having D.had
37.(20-21八年级下·江苏南京·开学考试)—Did you watch the football match last Sunday afternoon?
—No. I ________ a report the whole day.
A.wrote B.was writing C.will wrote D.would write
38.(21-22八年级上·江苏扬州·期末)—Did Tina finish her report on wild animals?
—I guess not. She ________ on it when I walked past her room just now.
A.was working B.worked C.am working D.works
39.(21-22八年级上·江苏无锡·期末)— Jim, did you feel a slight shake at 9: 46 last night? I heard an earthquake hit your city.
— Sure! I ________ my homework in the study.
A.did B.am having C.would do D.was doing
40.(21-22八年级上·江苏盐城·期末)—I didn’t see you at the party yesterday.
—I ________ a DIY course.
A.took B.take C.am taking D.was taking
二、单词拼写
41.(23-24八年级下·江苏无锡·期中)I (plan) how to organize the show at this time yesterday.
42.(23-24八年级下·江苏南京·阶段练习)When the car crashed into the coffee shop, Jack (interview) the CEO of the company there.
43.(23-24八年级上·江苏泰州·期末)—Hong Yuanyuan, I didn’t see your sister this afternoon.
—She (practise) the whole afternoon to prepare for the dancing competition.
44.(23-24八年级上·江苏扬州·期末)The bushes and trees were in the wind. (blow)
45.(23-24八年级上·江苏无锡·期末)The twins called their mother every week even while they (travel) around the world.
46.(23-24八年级上·江苏无锡·期末)When I arrived at home, my mom (do) some cleaning while my dad was reading a book.
47.(20-21八年级上·江苏镇江·周测)I was (discuss) the problem with Mary at that time.
48.(20-21八年级上·江苏镇江·周测)When I got home yesterday afternoon, it (rain) hard.
49.(20-21八年级上·江苏镇江·单元测试)—Why didn’t you say anything?
— Sorry, I (reply) to my boss’s message.
50.(21-22八年级上·江苏南京·期末)While I (introduce) myself to the new class, Ms. Green’s sweet smile gave me much confidence.
试卷第1页,共3页
试卷第1页,共3页
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参考答案:
1.D
【详解】句意:中午,我拍了几只天鹅在湖面上翩翩起舞的照片。
考查过去进行时。dance跳舞,动词原形;are dancing正在跳舞,现在进行时;danced跳舞,过去式;were dancing正在跳舞,过去进行时。根据“while”和“took”可知,此句要用过去进行时,表示过去某一时刻正在做某事,故选D。
2.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。
3.B
【详解】句意:——你爸爸在哪儿?他在洗车吗?——不,但他整个上午都在打扫。
考查时态。根据“the whole morning.”可知,整个上午父亲一直在打扫,应用过去进行时态。故选B。
4.A
【详解】句意:昨天从2:30到3:30,这个学生在家门口修自行车。
考查动词时态。根据“from 2:30 to 3:30 yesterday”可知,昨天2:30到3:30的时候,此处表示过去某个时间动作正在进行,应使用过去进行时。故选A。
5.D
【详解】句意:——汤米,你听到我刚才说的话了吗?——对不起,罗拉。我和我的兄弟们在看世界杯。
考查动词时态。根据“did you hear what I said just now?”和“the World Cup with my brothers”可知,刚才汤米正在和兄弟们在看世界杯,应用过去进行时,故选D。
6.D
【详解】句意:——记者刚才关于世界杯说了什么?——噢,对不起。我也不知道。我那时正在接电话。
考查动词时态。结合语境和“then”可知,那时我正在接电话,“那时正在……”为过去进行时,结构为was/were doing。故选D。
7.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。
8.B
【详解】句意:——你为什么不参加今天上午的会议?——我正在和陈先生讨论问题。
考查时态。由“Why didn’t you attend the meeting this morning”和答语“I…the problems with Mr. Chen”可知,此处指别人在参加会议的时候,我正在和陈先生讨论问题,应用过去进行时。故选B。
9.C
【详解】句意:昨天这个时候我们正在堆雪人。
考查过去进行时。根据“This time yesterday”可知,本题考查过去进行时,结构是:was/were+动词-ing形式,主语we表示复数,所以be动词用were,make变成动词-ing形式making。故选C。
10.C
【详解】句意:——你刚才在门外看见安妮了吗? ——当然。她在给别人打电话,所以我向她点了点头就走开了。
考查过去进行时。根据“so I nodded to her and went away.”可知,此处是指“我”向安妮点头时她正在打电话,应用过去进行时,其结构是was/were doing,主语She为第三人称单数,be动词用was,phone“打电话”,动词,其现在分词为phoning。故选C。
11.D
【详解】句意:——你的房间什么时候停电的?——今天早上,当我和朋友讨论数学问题的时候。
考查动词时态。根据“This morning”可知,停电和讨论问题都发生在过去,且停电时讨论问题这个动作正在进行,应用过去进行时:was/were doing。故选D。
12.B
【详解】句意:——你看起来很累!——我整晚都在看世界杯。你知道我是个足球迷。
考查过去进行时。由“I…the World Cup all night”可知,此处指昨天一晚上都在看世界杯,过去一段时间持续的动作应该用过去进行时。故选B。
13.B
【详解】句意:——我今天上午十点半给你打电话,但是没有人接。——哦,对不起,我和我表弟正在超市购物。
考查动词时态。根据“at half past ten this morning”可知,指的是在今早十点半正在购物,表示过去正在进行的动作,是过去进行时,结构为:主语+was/were + 现在分词。故选B。
14.D
【详解】句意:——你今天为什么怎么晚?——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。am waiting正在等,现在进行时态;wait动词原形;waited是过去式,一般过去时态;was waiting过去进行时。根据对话的意思可知,等车是过去发生的事情,并且这里表示“正在等车的时候有三辆车经过但都没有停。”故应用过去进行时,选D。
15.C
【详解】句意:——你注意到他进来了吗?——不,我(当时)正在看足球比赛。
考查动词时态。watch看,动词原形;watched看,动词过去式;was watching正在看,过去进行时态;am watching正在看,现在进行时态。根据“Did”和“I...a football game.”可知,此处指那时候正在看球赛,应用过去进行时态。故选C。
16.D
【详解】句意:——我昨天下午打电话给你,但你没有接。——对不起。我当时正在写一份关于动物保护的报告。
考查动词时态。根据“yesterday afternoon”可知,昨天下午打电话的时候正在写一份关于动物保护的报告,应用过去进行时,故选D。
17.B
【详解】句意:——是奶奶的电话,你为什么不接?——对不起,爸爸。我当时正在花园里修理我的自行车。
考查时态。根据“It was Grandma’s call. Why didn’t you answer it?”以及“my bicycle in the garden.”可知,此处表示打电话的时候正在做某事,因此用过去进行时,故选B。
18.B
【详解】句意:我正在房间里看足球比赛,这时我的表弟冲了进来。根据“a football match in my room when my cousin rushed in.”可知此处表示表弟冲进来时,正在看足球比赛,用过去进行时was/were doing。故选B。
19.D
【详解】句意:中午,当天鹅在湖上跳舞时我拍了些照片。
考查过去进行时。根据while和took可知,要用过去进行时,表示过去某一时刻正在做某事,D项符合题意。故选D。
20.D
【详解】句意:——在新的一年里你打算做什么?——对不起,你刚才说什么?我在想别的事。
考查时态。根据“Sorry, but what did you say? I ... about something else.”可知,你说了什么,我刚刚在想别的事情;表示过去某一刻正在做某事应用过去进行时,结构为was/were doing。故选D。
21.B
【详解】句意:——你为什么不给我开门?——对不起。我在看足球比赛,没听见你说话。
考查过去进行时。根据“Why didn’t you open the door for me”可知当时正在看球赛,所以没去开门,此处用过去进行时,主语是I,be动词用was。故选B。
22.C
【详解】句意:——你刚才看见李小姐了吗?——看见了。但是她在给某人打电话,所以我向她点点头就走了。
考查过去进行时。根据“just now”以及“But she…someone, so I nodded to her and went away.”可知,此处表示过去某一时间段中正在发生的动作,应该用过去进行时,其谓语动词构成为was/were doing,主语是she,因此此处用was。故选C。
23.D
【详解】句意:——安迪,我昨天下午4点给你打电话,但你没接。——抱歉。我在整理我的卧室。
考查过去进行时。根据“Andy, I called you at 4:00 p.m. yesterday, but you didn’t answer it.”可知,此处描述的是过去某一时刻正在发生的动作,用过去进行时,其谓语动词构成是“was/were doing”。故选D。
24.C
【详解】句意:——你家什么时候停电的?——今天早上,当我妈妈在给我们做早餐的时候。
考查过去进行时。根据“This morning, while my mother…breakfast for us.”可知,此处指过去某一时刻正在进行的动作,用过去进行时,因此此处用was/were doing。故选C。
25.B
【详解】句意:——上周六晚上八点半我给你打电话,但没人接。——哦,对不起。我和我表哥正在电影院看电影《万里征途》。
考查过去进行时。根据“ at half past eight last Saturday evening,”可知,此处应用过去进行时,构成为was/were + doing,主语为第一人称I,be动词应用was。故选B。
26.B
【详解】句意:我们在乡间小路上慢跑时,突然刮起了暴风雨,于是我们往回走。
考查时态。根据“when a sudden storm hit”可知是当暴风雨时,正在慢跑,用过去进行时was/were doing。故选B。
27.D
【详解】句意:——昨天下午我去你家时没看见你妈妈。——她在我家附近的超市购物。
考查动词时态。根据“I didn’t see your mother when visiting your home yesterday afternoon.”可知是指昨天下午那时妈妈正在附近的超市购物。应用过去进行时,故选D。
28.D
【详解】句意:——记者刚才关于冬奥会说了什么?——啊。对不起。我也不知道。我当时正在接电话。
考查过去进行时。结合语境和“then”可知,当时我正在接电话,“当时正在……”为过去进行时,故应用was answering。故选D。
29.D
【详解】句意:——琳达,我今天早上给你打电话,但是没有人接听。——对不起,我那时候正在和朋友们在学校操场上一起踢足球。
考查时态。结合“I called you this morning, but nobody answered the phone.”以及“then”可知,此处强调过去某一时间发生的动作,用过去进行时。故选D。
30.A
【详解】句意:地震发生时人们都在睡觉,许多人因此丧生。
考查从属连词。when当……时(引导从句既可跟短暂性动词,也可跟延续性动词);while然而;当……时(引导从句只能跟延续性动词);because因为;as随着。主句为过去进行时,从句为一般过去时,且happened是短暂性动词,只能用连词when。故选A。
31.D
【详解】句意:——我昨晚8点给你打电话,但没人接。——我很抱歉。我妈妈和我正在超市里购物。
考查动词时态。根据“I called you at 8:00 yesterday evening, but nobody answered. ”可知,是介绍昨天8点打电话时正在做的事情,所以用过去进行时(was/were doing),主语表复数,be动词用were。故选D。
32.C
【详解】句意:——刚才有人敲门了。——对不起,我没听到。我那时正在听音乐。
考查动词的时态。根据“at that time”可知句子应用过去进行时,结构为“was/were doing”。故选C。
33.A
【详解】句意:整个上午,这位工程师都在修理我们教室里的电脑。
考查动词时态。根据时间状语“the whole morning”语境可知,空处的动作表示过去的某段时间正在进行,故应用过去进行时,构成形式为:was/were doing;主语“The engineer”是第三人称单数形式,故助动词应用was,fix的现在分词是fixing。故选A。
34.B
【详解】句意:地震发生时,所有村民都在家里睡觉。
考查动词时态。根据“All the villagers in their houses …when the earthquake happened.”可知,此处指地震发生时那一刻所发生的动作,使用过去进行时,结构为was/were doing。故选B。
35.A
【详解】 句意:——你昨天为什么不来参加我们的聚会?——对不起。从晚上7点到晚上8点半,我在电视上看足球比赛,忘记了时间。
考查过去进行时。根据“I …a football match on TV from 7 p.m. to 8:30 p.m. and forgot the time.”可知,此处指过去某个时间段内持续发生的动作,使用过去进行时。结构为was/were doing。故选A。
36.B
【详解】句意:我想当我们正在吃晚饭时,我听到他进来了。
考查过去进行时。根据“I thought I heard him come in while we...dinner.”可知,此处指当我们正在吃晚饭时,时态用过去进行时was/were doing,主语“we”是复数,应用were doing。故选B。
37.B
【详解】句意:——上周日下午你看足球比赛了吗?——没有。我一整天都在写报告。
考查时态。根据“last Sunday afternoon”以及“the whole day”可知,此处指的是过去某个时间段内一直进行的动作,应用过去进行时,故选B。
38.A
【详解】句意:——缇娜完成了关于野生动物的报告没?——我猜还没有。刚才我走过她的房间,她正在为报告而努力工作。
考查动词的时态。根据“when I walked past her room just now”可知表达过去的时间点正在发生的动作,用过去进行时。主语“She”是第三人称单数,表达“正在工作”,动词用“was working”。故选A。
39.D
【详解】句意:——吉姆,昨晚9点46分你有感觉到轻微的震动吗?我听说你们城市发生了地震。——当然!我当时正在书房里做作业。
考查动词时态。根据“did you feel a slight shake at 9: 46 last night?”以及“I...my homework in the study.”可知此处是指“我”那时正在书房里做作业,时态为过去进行时,故选D。
40.D
【详解】句意:——昨天晚会上我没看到你。——我正在上DIY课。
考查动词的时态。根据“didn’t see you at the party yesterday”可知表达昨天晚会的时候正在上课,句子是过去进行时。主语是“I”,表达“上课”动词用“was taking”。故填was taking。
41.was planning
【详解】句意:昨天这个时候我正在计划如何组织演出。根据“at this time yesterday”可知,本句时态为过去进行时“was/were doing”,主语为I,be动词用was,plan现在分词为planning。故填was planning。
42.was interviewing
【详解】句意:当车撞上咖啡店时,杰克正在那里采访公司的首席执行官。根据“When the car crashed into the coffee shop”可知,从句是一般过去时,主句表示过去某个时间正在发生的事情,所以要用过去进行时,结构为was/were doing,主语Jack是第三人称单数,be动词用was,interview的现在分词为interviewing。故填was interviewing。
43.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。
44.blowing
【详解】句意:灌木和树木在风中飞舞。根据语境和所给单词提示可知,此处考查过去进行时,其结构是was/were+doing,主语The bushes and trees为第三人称复数,be动词用were,动词blow“(被)刮动,吹动”的现在分词形式为blowing。故填blowing。
45.were travelling/were traveling
【详解】句意:这对双胞胎每周都给母亲打电话,即使他们正在环游世界。本句为while引导的时间状语从句,强调主从动作同时发生,从句中常用进行时态;本题主句为一般过去时,所以从句应用过去进行时,其结构为:was/were+动词的现在分词;主语they是第三人称复数,be动词用were,travel的现在分词是travelling/traveling。故填were travelling/traveling。
46.was doing
【详解】句意:当我到家时,我妈妈正在打扫卫生,而我爸爸正在看书。根据“When I arrived at home, my mom…some cleaning ”可知,指的是当我到家时,妈妈正在打扫卫生,时态是过去进行时,其结构为:主语+was/were+doing。主语是my mom,be动词用was;do的现在分词是doing。故填was doing。
47.discussing
【详解】句意:那时我正在和玛丽讨论这个问题。由at that time.判断,此处需用过去进行时,其结构是:was/were+动词的现在分词。故填discussing。
48.was raining
【详解】句意:昨天下午我到家时,正下着大雨。when引导的时间状语从句,从句用一般过去时,主句表示过去某个时段正在进行的动作,用过去进行时was/were doing的结构,主语it是第三人称,助动词用was,故填was raining。
49.was replying
【详解】句意:——你为什么一言不发?——对不起,我当时正在回复老板的信息。reply回复,动词。由问句“Why didn’t you say anything”可知,这里说的是过去发生的事情;结合语境,这里表示当时正在做某事,应用过去进行时was/were doing结构。主语I是第一人称,be动词用was。故填was replying。
50.was introducing
【详解】句意:当我正在给新班级做自我介绍的时候,格林女士的甜美微笑给了我很大的自信心。根据“While”可知句子表达过去时间点正在做某事,是过去进行时,主语是“I”,表达“介绍”动词用“was introducing”。故填was introducing。
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