(共51张PPT)
高频词汇精讲
During the early Games, only Greek men were allowed to participate.在早期的奥运会上,只有希
腊男子才被允许参加。 (教材P16)
情景导学
I would like to participate in the workshop by showcasing Chinese cuisine, handicrafts, and cal-
ligraphy.我想参加这个研讨会,展示中国烹饪、手工艺和书法。 (写作·申请信)
Those who want to participate in the competition are supposed to present relevant materials be-
fore May 21.那些想参加比赛的人应该在5月21日前上交相关材料。 (写作·通知)
高频词汇 情景破
词汇 1 participate vi.参加,参与
用法归纳
participate ...参加……;参与……
词汇拓展
①participant n.参加者;参与者
You'll hear these participants' stories and learn what strategies worked well for them. 你将听到
这些参与者的故事,了解哪些策略对他们有效。 (2023新课标Ⅰ)
②participation n.参加;参与
participation in... 参加……;参与……
A back injury prevented active participation in any sports for a while.背伤曾一度妨碍积极参
加任何体育运动。
in
participate in 正式用语,通常指参加团体活动,暗示以一个积极的角色参加
attend 正式用词,多指参加会议、婚礼、典礼、聚会,也可指上课、上学、听演讲等
join 指加入某党派、组织或团体,成为其中的一员
join in 通常指参加小型活动,如游戏、散步、讨论等
take part in 多指参加一些重大的会议或者集体活动,强调主语参加活动并在活动中发挥作用。有时take part in可以与join in互换
易混辨析
They competed in such events as boxing, running and the long jump.他们参加了诸如拳击、赛
跑和跳远之类的比赛项目。 (教材P16)
情景导学
On Oct. 11, hundreds of runners competed in a cross-country race in Minnesota. 10月11日,数百
名跑步者参加了明尼苏达州的一场越野赛。(2023新课标Ⅰ)
Museums must compete for people's spare time and money with other amusements.为了(获取)人
们的业余时间和金钱,博物馆必须和其他娱乐活动竞争。 (2020新高考Ⅰ)
But the Academy thought it was unfair to let movies with sound compete against silent films.但
学院认为让有声电影与默片竞争是不公平的。 (21st Century)
词汇 2 compete vi.参加比赛;竞争
用法归纳
①compete ...参加……比赛
②compete with/ ...与……对抗/竞争
③compete ...为……而竞争
词汇拓展
①competition n.比赛;竞争
be in competition with...与……竞争
win the competition赢得这场比赛
With a workout partner, you will increase your training effort as there is a subtle competition.
有了一个锻炼伙伴,你会更加努力训练,因为有一个微妙的竞争。 (2022新高考Ⅰ)
②competitive adj.有竞争力的;竞争的
in
against
for
competitive sports竞技性体育运动
a highly competitive market system高度竞争的市场体系
③competitor n.竞争者;对手;参赛者
Motivated by the original Olympic motto “Faster, Higher, Stronger”, many well-known ath-
letes, both male and female, have devoted themselves to achieving sporting excellence and push-
ing the boundaries of human achievement.在原先的奥运口号“更快、更高、更强”的激励下,
许多著名的男女运动员致力于在体育运动方面追求卓越,突破人类成就的极限。 (教材P16)
情景导学
He is really motivated by this role model and has a positive attitude to his future life.他真的被这
个行为榜样激励着,并对未来的生活抱有积极的态度。
Mr. Li is a responsible teacher who often motivates his students to study hard.李老师是一位负责
任的老师,他经常激励他的学生努力学习。 (写作·人物介绍)
词汇 3 motivate vt.激励,激发;成为……的动机,是……的原因
用法归纳
①be motivated 被……激励
②motivate sb. sth.激励某人做某事
词汇拓展
①motivation n.动力,诱因;积极性
the motivation for (doing) sth.(做)某事的动机/原因
Her motivation for writing was a desire for women to get the right to higher education.她写作
的动机是渴望女性能有权利获得高等教育。
②motivated adj.有积极性的
highly motivated employees积极性很高的员工
by
to do
Afterwards, this young man proceeded to become the world heavyweight champion in 1964, and
later changed his name to the one we all know—Muhammad Ali.后来,这个年轻人接着在1964
年成为世界重量级拳击冠军,后来改名为众所周知的那个名字——穆罕默德·阿里。 (教材
P17)
情景导学
He pulled back the curtains and then proceeded to open the window.他拉开窗帘,接着打开窗
户。 (读后续写·动作描写)
There was not enough evidence to proceed against him.没有足够的证据起诉他。
The errors of youth often proceed from the lack of judgement.青年时代的错误往往是由于缺乏
判断力。
词汇 4 proceed vi.接着做,继而做;继续从事(或进行);行进,前往;对……提起诉讼;来自
The CEO has proposed to proceed with a deal to buy the platform at the original price, according
to a report.据报道,这位首席执行官打算继续以原价收购该平台。
用法归纳
①proceed sth.继续某事
②proceed to do sth.接着做某事
③proceed sb.起诉某人
④proceed sth.由……引起;起因于;是……的结果
词汇拓展
①process n.过程;进程;步骤;工序 v.加工;处理;审阅
in the process在此过程中
in the process of在……的进程中
with
against
from
Then I launched the campaign, and in the process of helping others, I could also push myself
forward, bit by bit.然后我发起了这项运动,在帮助别人的过程中,我也可以推动自己一点一点
地前进。
②proceedings [pl.]n.事件;过程;一系列行动
In addition to hosting the Olympics for the first time, China also ranked first in the medal table.除
了首次举办奥运会以外,中国也登上奖牌榜榜首。 (教材P17)
情景导学
It is such a beautiful place that it definitely deserves ranking among China's top scenic spots.这是
一个非常美丽的地方,绝对值得进入中国顶级风景区的行列。 (写作·景点介绍)
This could rank with the greatest movies ever made.这能够与有史以来拍摄的最优秀的影片相
媲美。
Learning that you ranked first in the English speech competition held last week,I am writing to
express my sincere congratulations.听说你在上周举办的英语演讲比赛中排名第一,我写信表
达我真诚的祝贺。 (写作·祝贺信)
词汇 5 rank vi.& vt.属于某等级,把……分等级;排列,使排成行 n.地位,级别;等级;排,列;军衔
Ranks of trees along the road stood there against the cold wind,just like the brave soldiers. 沿路
排排站的树木像勇敢的战士一样抵御着寒风。 (读后续写·环境描写)
用法归纳
①rank 属于……之列
②rank as列为……
③rank 与……并列
④rank first/second/...排名第一/二/……
⑤in the front rank在前列
⑥in ranks成排地;成列地
⑦people of all ranks各个阶层的人
⑧a painter of the first rank 一流的画家
⑨hold the rank of captain拥有上尉军阶
among
with
As Coubertin believed, “With the Olympic Games, each generation celebrates its advent, its joy
of living, its faith in the future, its ambition and its will to ascend.”正如顾拜旦所相信的:“有
了奥林匹克运动会,每一代人都在庆祝它的到来、它存在的乐趣、它对未来的信心、它的雄
心和它进取的意志。”(教材P17)
情景导学
You should have faith in yourself and don't give up easily.你应该对自己有信心,不要轻易放
弃。 (写作·建议信)
We printed the report in good faith but have now learnt that it was incorrect.我们好意印发了这
份报告,但现在才知道它并不正确。
You cannot expect your friends to trust you if you don't keep faith with them.假如你对朋友不守
信用,你就不要指望他们会信任你。
词汇 6 faith n.信心,信任;宗教信仰;诚意
用法归纳
①have/show faith ...对……有信心/表示信任
②lose faith in...对……失去信心/信任
③break/keep faith sb.对某人不守信用/守信用;不忠诚/忠诚于某人
④ good faith真诚;诚心诚意
词汇拓展
①faithful adj.忠实的;可信赖的
be faithful to忠实于
Being faithful to one's promise is one of the good qualities a person should have.忠于诺言是
一个人应该具备的优良品质之一。
②faithfully adv.忠实地
in
with
in
As Coubertin believed, “With the Olympic Games, each generation celebrates its advent, its joy
of living, its faith in the future, its ambition and its will to ascend.”正如顾拜旦所相信的:“有
了奥林匹克运动会,每一代人都在庆祝它的到来、它存在的乐趣、它对未来的信心、它的雄
心和它进取的意志。” (教材P17)
情景导学
Linda has an ambition to be/of being a journalist.琳达有当记者的志向。
If I didn't face failure with a peaceful mind, I would never achieve my ambition.如果我不以平静
的心态面对失败,我将永远无法实现我的抱负。 (China Daily)
用法归纳
①achieve/realize one's ambition实现某人的抱负/愿望
词汇 7 ambition n.追求的目标,夙愿;野心,雄心,壮志
②lack ambition/have no ambition 胸无大志
③an ambition to do sth./ doing sth.做某事的夙愿
④a lifelong ambition终身追求的目标
词汇拓展
①ambitious adj.有野心的,有雄心的;雄心勃勃的
be ambitious for...对……有野心;对……抱有期望
His parents were ambitious for him. However, he was intelligent but lacked ambition.他的父
母望子成龙。但是,他虽聪明却胸无大志。
②ambitiously adv.雄心勃勃地;劲头十足地
of
I ran my race relaxed and confident, even though my limits were being tested like never before.我
轻松自信地跑着比赛,尽管我的极限正受到前所未有的考验。 (教材P20)
情景导学
Life is limited, but there is no limit to serving the people.生命是有限的,但是为人民服务是无限
的。
A one-mile area around the wreck is still off limits.沉船周围一英里的地区仍然禁止入内。
The American Heart Association recommends that we limit ourselves to less than 150 calories a
day from sugar.美国心脏协会建议我们将每日从糖中摄入的热量限制在150卡路里以下。
用法归纳
①a time/speed/age limit 时间/速度/年龄限制
②within limits在合理限度内
词汇 8 limit n.限度,限制;限量,限额;界限 vt.限制,限定;限量,减量
③there is a/no limit ...……是有限的/无限的
④ limits 禁止入内;不容涉足
⑤set a limit on sth.对……设定限度
⑥limit... ...把……限制在……
词汇拓展
①limited adj.有限的
be limited to...限于……
In this farm picking activity,our work is limited to picking peaches and putting them into a big
box.在这次农场采摘活动中,我们的工作限于采摘桃子并把它们放进一个大盒子里。 (202
0全国Ⅱ)
②limitless adj.无限的
to
off
to
情景助记
You can also include an opposing opinion and state why you disagree.你也可以列出相反的观
点,并说明你不同意的原因。 (教材P24)
情景导学
In a football match, players try to kick the ball into the opposing team's goal. 在足球比赛中,球员
尽力把球踢进对方的球门。
It is time for opposing groups to unite and work towards a common goal.是对立团体团结起来,
朝着共同目标努力的时候了。
词汇拓展
①oppose vt.反对;抵制;阻挠;与……角逐
oppose sth.反对某事物
词汇 9 opposing adj.对抗的;相反的
oppose (sb./sth.) doing sth.反对(某人/某物)做某事
In the article, various people said that the public should oppose the idea of developing driver-
less cars.在这篇文章中,不同的人说公众应该反对研发无人驾驶汽车这一想法。
②opposed adj.强烈反对的;截然不同的
be opposed to强烈反对……(to是介词)
as opposed to而,相对于
Opposed to developing the nature reserve, the local people prevented the construction workers
from entering their villages.当地人强烈反对开发自然保护区,阻止建筑工人进入他们的村
庄。
③opposite adj.相反的;对面的 prep.与……相对;在……对面 n.对立的人(或物);对立面
have the opposite effect有反作用
in the opposite direction朝反方向
I got a seat opposite a middle-aged man with sharp eyes, who kept watching a young woman
with a little boy on her lap.我坐到了一个目光锐利的中年男人对面,他一直盯着一个年轻女
人,年轻女人的腿上坐着一个小男孩。 (读后续写·人物描写)
④opponent n.对手,竞争者;反对者
An insurance salesman who is about to reach his annual sales target,only for the company to
make the target higher, could rightly complain about the company moving the goalposts.一名保
险销售员即将达到年度销售目标,如果公司(在这时)把目标定得更高,(那么)他就有充分的理
由抱怨公司改变了规则。 (教材P25)
情景导学
I'd like to complain to you that the waiters of your hotel broke my suitcase.我想向你投诉你们宾
馆的服务员弄坏了我的手提箱。 (写作·投诉信)
Despite all the difficulties, Dad never complained about unfairness.尽管困难重重,但爸爸从不抱
怨不公平。
She left early, complaining of a headache.她说自己头疼,很早就离开了。
词汇 10 complain vi.& vt.抱怨,投诉
用法归纳
①complain (to sb.) ...(向某人)抱怨……
②complain (to sb.) /of sth.(向某人)抱怨/投诉某事
③complain sth.诉说(病情或痛苦)
词汇拓展
complaint n.抱怨;投诉;怨言
make a complaint against/about...对……提出投诉
make a complaint to sb.向某人抱怨/投诉
a letter of complaint投诉信
If you wish to make a complaint about the high price, you should see the manager.如果你想要
投诉价格高,你应该去找经理。
that
about
of
In day-to-day life, if someone makes an unfair and cruel remark, we can describe it as “below
the belt”.在日常生活中,如果有人发表了不公平的、残酷的言论,我们可以把它描述为“伤
人的”。 (教材P26)
情景导学
In the heat of the moment, I made a remark about his behavior.因为一时冲动,我对他的行为发
表了评论。
When she is put in a situation where she has to remark on others, she always changes the topic.当
她处于不得不评论别人的情形下时,她总是转移话题。
Both students and teachers remarked that the race not only provided a chance for the students to
exercise,but also made them more united.学生们和老师们都说这次比赛不仅为学生们提供了
锻炼身体的机会,而且让他们更团结。 (写作·比赛介绍)
词汇 11 remark n.谈论,言论 vi.& vt.说起,评论
用法归纳
①make a/no remark ...对……发表/不予评论
②remark /upon sb./sth.评论/说起某人/某事
③remark that...评论说……;说起……
词汇拓展
①remarkable adj.非凡的;显著的;引人注目的
be remarkable for因……而引人注目
a remarkable achievement了不起的成就
It is known to us all that the 20th century was remarkable for these inventions.众所周知,20世
纪因这些发明而引人注目。
②remarkably adv.引人注目地;明显地
about
on
词汇 释义 用法&拓展
diverse adj.多种多样的,不同的 diverse fields各种各样的领域
diverse cultures多元的文化
diverse methods多种多样的方法
diversity n.多样性;差异
a great/wide/rich diversity of多种多样的
diversify v.(使)多样化,(使)变化
高频词汇积累
demonstrate vt.表现,表露;证实,证明;示范,
演示 vi.游行示威 demonstrate their new products演示他们的新产品
demonstrate the intellect, wealth or faith展示才智、财富或信仰(2023新课标Ⅱ)
demonstrate sth. to sb.向某人说明某事
demonstrate against示威反对……
demonstrate in favour/support of示威支持……
demonstrate that...说明/演示……
demonstrate sth. to be...证明某事是……
It is demonstrated that...据证实……
demonstration n.示范;证明;游行示威
demonstrative adj.感情外露的;指示的
demonstrator n.示威者
applaud vt.& vi.称赞,赞许;鼓掌 applaud sb. for sth.因某事而称赞某人
applause n.鼓掌;喝彩
a round of applause一阵掌声
break/burst into applause爆发出掌声
win/get/draw applause赢得/获得掌声
consistent adj.一致的,始终如一的;连续的 consistent policy一贯的政策
be consistent with...与……一致/相符
consistently adv.一致地;一贯地
consist in在于
consist of由……组成(不用于被动语态和进行时态)
-ent是形容词后缀,表示“是……的,做……的”。如:absent 缺席的;patient 有耐心的;confident 自信的;silent 寂静的
call on sb. to do sth. 正式邀请某人做某事;请求某人做某事 Whaley recalls how at the beginning of the year, when
called on to read, Chris would excuse himself to go to the
bathroom.惠利回忆起在年初,当克里斯被要求阅读时,他会如何找借口去洗手间。(2019全国Ⅰ改编)
election n.选举,推选;当选 run for election参加竞选
win/lose an election在选举中获胜/失败
elect v.选择,决定;选举,推选
elect to do sth.选择做某事;决定做某事
elect sb.(as)...选举某人为…… (某职位)
elect sb. to...选某人进入……(某机构)
identical adj.完全同样的 be identical in...在……方面完全相同
be identical to/with...与……完全相同
identically adv.完全相同地
identity n.身份;同一性;一致
identity card身份证
cultural identity文化认同
national identity民族认同
identify v.确认;认出;找到;显示
-ical是形容词后缀,表示“……的”。如:biological 生物学的;
physical 物理学的,身体的;chemical 化学的;mathematical 数学的;historical 历史(上)的
gradually adv.逐渐地,逐步地 gradually improved逐渐提高(2023全国乙)
gradual adj.逐渐的;平缓的
-ly是副词后缀,表示“以……方式”。如:easily 容易地;
happily 高兴地;heavily 沉重地;busily 忙碌地;angrily愤怒地
pour vt.& vi.倒,斟;倾倒,倒出;涌流,倾泻;下大雨 pour sth. into/out of...把某物倒入……/从……倒出
pour into/out of...涌入……/从……涌出
poured water from a bottle into his hand把瓶子里的水倒在他的手里(2022全国甲)
pour down (雨)倾盆而下
pour out倾吐;倾诉;尽情地诉说
dignity n.尊严;自尊;高贵 stand on one's dignity保持尊严
beneath one's dignity有失尊严;有失身份;有失体面
dignify v.使有尊严;使崇高
dignified adj.庄严的;有尊严的
handle vt.处理,应付;控制,操纵 n.把
手, 拉手;柄 handle the situation应对局面handle chopsticks拿筷子(2022全国甲)
handle the crisis处理危机
turn the handle转动把手
the handle of a knife刀柄
cruel adj.刻毒伤人的,残酷的 be cruel to对……残酷
cruel reality残酷的现实
cruel and continuous hunting残酷而持续的狩猎(2023全国甲)
cruelty n.残酷;残忍;残酷的行为
cruelly adv.残酷地
Every four years, thousands of highly trained and talented athletes gather together in the spirit of
friendship, solidarity and fair play, ready to test their abilities against each other in the hope of be-
ing recognized as the best of the best.每四年,成千上万名训练有素、天赋过人的运动员,本着
友谊、团结和公平竞争的精神聚集在一起准备互相较量,希望能成为公认的顶尖选手。
(教材P16)
情景导学
Determined and proud, I took out my own money and handed it to Dad.我坚定而自豪地拿出自
己的钱递给爸爸。
用法归纳
形容词(短语)作状语时,一般用逗号将其与句子的其余部分隔开,可表示原因、方式、伴随
等,其逻辑主语通常是句子的主语。
经典结构 情景破
结构 1 形容词(短语)作状语
特别提醒
副词作状语通常修饰动词或形容词,有时修饰整个句子。形容词(短语)作状语多表示主语的
状态或特点等。
As the small boat moved gently along the river he was left speechless by the mountains being
silently reflected in the water.当小船顺着江缓缓地移动时,群山静静地倒映在水中,这景色使
他说不出话来。(2020全国Ⅲ)
However, when you are thrown a curveball, do not throw in the towel—work hard, be careful not
to score an own goal, and you are sure to make it!然而,当你被别人刁难时,不要认输——加油
干,小心不要“进乌龙球”,你一定会获得成功的!(教材P26)
情景导学
Look up Charles Dickens, and you might learn a thing or two about realism.查一查查尔斯·狄更
斯,你可能会对现实主义有所了解。 (2020天津5月)
Listen to the teacher carefully in class, or you can't catch what he is saying.上课认真听老师讲
课,否则你会听不懂他在说什么。
用法归纳
①“祈使句+ +陈述句”,表示祈使句与后面的陈述句是顺承关系,相当于“if引导的条
件状语从句+主句”。
结构 2 祈使句+and/or+陈述句
and
②“祈使句+ /or else+陈述句”相当于“if引导的条件状语从句的否定形式+主句”。
结构拓展
“名词词组+and+陈述句”也有类似的功能,名词词组中常含有more、another、further、ear-
lier、less等词。
Less people than that, and there may not be enough things to choose from;more than that, and
it becomes uncontrollable.少于那个人数,可能没有足够的东西可供选择;多于那个人数,它就
变得无法控制。 (2021全国甲)
or
Sentence 1
译文 他在1960年罗马奥运会上引起了公众的关注,当时他为美国赢得了轻重量级拳击金
牌,在比赛过程中展现了过人的天赋与优秀的品性。
长难句 图解
非限制性定语从句
状语
Sentence 2
译文 她在采访中透露,自己维持良好表现的秘诀在于从来不缺席训练。
宾语从句
定语从句
Sentence 3
译文 我们被告知,参赛者将为慈善机构筹款,虽然我觉得自己的体质没有那么强壮,跑不了
那么远,但我认为仅次于最好的事就是帮助那些能够跑那么远的人。
宾语从句
让步状语从句
宾语从句
宾语从句
定语从句
Sentence 4
译文 一位保险销售员就要达到年度销售目标了,如果公司(在这时)提高了销售目标,(那么)
他就可以正当地抱怨公司改变了规则。
定语从句
状语
Sentence 5
译文 在足球中,“进乌龙球”的意思是不小心将球踢进或顶进了自己队的球门网,这是一
名足球运动员所能遇到的最糟糕的事情之一。
主语
宾语
定语从句
过去进行时与过去完成时的被动语态
一、过去进行时的被动语态的构成
过去进行时的被动语态表示过去某一特定时间某事正在被做。
情景导学
A lecture was being given by Professor Smith to us at this time yesterday afternoon.昨天下午的
这个时候,史密斯教授正在给我们作演讲。 (写作·学校生活)
The farmer said the PLA came to their rescue in time when they were being trapped in the snow-
storm.这位农民说当他们被困在暴风雪中时,中国人民解放军及时赶来营救他们。 (读后续
写·场景描写)
We had to take another way because the road was being repaired.我们不得不走另外一条路,因
必备语法 情景破
为那条路正在被修理。
用法归纳
过去进行时的被动语态的基本结构: was/were ① 。
特别提醒
过去进行时的被动语态一般不与表示一段时间的状语或者表示次数的状语连用。
二、过去完成时的被动语态的构成
过去完成时的被动语态表示过去某一时间之前已经被完成的动作。
情景导学
It was with great joy that Tom received the news that his lost son had been found.汤姆收到他走
失的儿子被找到了的消息,非常高兴。
being done
用法归纳
过去完成时的被动语态的基本结构: had ② 。
三、过去完成时的被动语态的用法
情景导学1
The boy was reminded that his homework had not been handed in.这个男孩被提醒他的家庭作
业还没有交。
When she got home, she found that her keys had been left in her office.当她到家时,她发现自己
的钥匙落在办公室里了。
用法归纳1
用在found、told、said、heard、knew、thought、reminded等动词后的③ 从句中,表示
从句中的动作已经被完成。
been done
宾语
情景导学2
How many buildings had been destroyed when the hurricane ended 飓风结束时有多少建筑物
被毁
By the time the messenger reached him, the damage had been done.送信人到达他那儿时,损失
已经造成了。
用法归纳2
当before、when、④ 等引导的时间状语从句的时态是一般过去时,主句的被动
动作发生在从句的动作之前时,主句用过去完成时的被动语态。
情景导学3
By the end of last month, those houses had been built.到上个月月底,那些房子已经建好了。
Had the new plan been discussed before the meeting 这个新计划在会议前讨论过了吗
by the time
用法归纳3
当before、⑤ 后接表示过去的时间点或过去的某一事件,且句子的动作已经被完成时,
句子常用过去完成时的被动语态。
情景导学4
If I had been invited earlier, I would have gone with you.如果我早一点被邀请,我就和你一起去
了。
用法归纳4
用在条件状语从句中,表示对⑥ 事实的虚拟。
情景导学5
It was the second time that his bike had been stolen.这是他的自行车第二次被偷了。
用法归纳5
用在“This/That/It was the first/second/...time that...”句型中,表示that从句中的动作已经被完成。
by
过去
即时巩固
Ⅰ.单句语法填空
1.(2022全国乙)A number of experiments ruled out that the children misunderstood what they
(ask).
2.(2022北京)He (drop) off at school late and was unable to open the door.
3.(2020天津)Jones got the idea after he had talked with an elderly lady who
(cheat) of her money.
4.After school we went to the reading room to do some reading, only to be told that it
(decorate).
were being asked
had been dropped
had been cheated
was being
decorated
Ⅱ.完成句子
1.人们不被允许进入体育馆,因为它正在被粉刷。
People were not allowed to enter the stadium because .
2.到去年年底,该地区又建成了一个新的主题公园。
By the end of last year, another new theme park in that area.
3.如果这件礼物昨天就送给她,她就不会这么失望了。
If the gift yesterday, she wouldn't have been so
disappointed.
4.这是第一次在会议上介绍这件产品。
It was the first time that the product at the conference.
5.他们学校当时正在建一座新图书馆吗
in their school just then
it was being painted
had been completed
had been given to her
had been introduced
Was a new library being built