UNIT 1 SCIENCE AND SCIENTISTS单元精讲精练课件-人教版选择性必修第二册

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名称 UNIT 1 SCIENCE AND SCIENTISTS单元精讲精练课件-人教版选择性必修第二册
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资源类型 试卷
版本资源 人教版(2019)
科目 英语
更新时间 2025-07-08 12:01:06

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(共59张PPT)
Snow subscribed to the second theory.斯诺赞同第二种理论。 (教材P2)
情景导学
He subscribes to the village school.他定期给这所乡村学校捐款。
I guessed they wished to subscribe to the newspaper.我猜他们想订阅这份报纸。
Employees subscribed for far more shares than were available.员工认购的股份远远超出实际可
认购的额度。
高频词汇 情境破
高频词汇精讲
词汇 1 subscribe vi.认购(股份);定期订购;定期交纳(会费);定期捐助
用法归纳
①subscribe    同意,赞同;订阅,订购;定期交纳(会员费);定期捐款
②subscribe    认购(股份)
词汇拓展
①subscription n. (报刊等的)订阅费,订购款,订阅,订购;定期捐款;会员费
take out a subscription to...订阅……
cancel/renew a subscription退订/续订
a(n) annual/yearly subscription年度订阅
②subscriber n. (报刊的)订阅人,订户;定期捐助者;消费者;用户
a subscriber/subscribers to...……的用户/订户
I have been a subscriber to China Daily for many years.我多年来一直是《中国日报》的订
户。
to
for
Snow suspected that the water pump was to blame.斯诺怀疑水泵是罪魁祸首。 (教材P2)
情景导学
I don't trust her—I suspect that she's a bit two-faced.我不信任她——我觉得她有点言行不一。
It was perfectly all right, he said, because the police hadn't suspected him of anything.他说什么
事都没有,因为警察一点儿也没怀疑到他。
The young man ran out of the supermarket in panic, so the police suspected him to be a thief.那个
年轻人惊慌失措地跑出了超市,因此警察怀疑他是个小偷。
词汇 2 suspect vt. & vi.怀疑;疑有;不信任 n.犯罪嫌疑人;可疑对象 adj.不可信的,靠不住的;可疑的
用法归纳
①suspect that...怀疑/觉得……
②suspect sb.    (doing) sth.怀疑某人(做)某事
③suspect sb.    ...怀疑某人是……
④a murder suspect杀人嫌疑犯
⑤a suspect package可疑包裹
词汇拓展
suspected adj.被怀疑的
suspected terrorists嫌疑恐怖分子
of
to be
suspect 指猜疑、疑心,常译为“疑有,觉得”,怀疑其有
doubt 多指因证据不足或仅凭证据还不能肯定而产生怀疑,怀疑其无
易混辨析
I suspect that she is the criminal.我觉得她是罪犯。
I doubt that she is the criminal.我认为她未必是罪犯。
Snow suspected that the water pump was to blame.斯诺怀疑水泵是罪魁祸首。(教材P2)
情景导学
Once you form the habit of blaming somebody else for a bad situation, you are a loser.一旦你养
成把不好的情况归咎于其他人的习惯,你就是一个失败者。
The researchers say that if you are not satisfied with the shape of your nose, blame it on climate,
not your parents.研究人员说,如果你对自己鼻子的形状不满意,那就怪气候,而不是你的父
母。
Lots of people find it hard to get up in the morning and put the blame on the alarm clock.很多人
发现早上很难起床并把责任推到闹钟上。
词汇 3 blame vt.把……归咎于;责怪;指责 n.责备;指责
用法归纳
①be to blame (for sth.) (对某事)负有责任
②blame sb./sth.    sth.把某事归咎于某人/某物
③blame sth.    sb./sth.把某事归咎于某人/某物
④take/accept/shoulder the blame for...为……承担责任
⑤lay/put the blame    ...归咎于……
特别提醒
sb.+be to blame (for sth.)意为“某人(对某事)负有责任”,其中不定式用主动形式表示被动含
义。
This time, humans will be to blame.这一次,人类将是罪魁祸首。
for
on
on
Moreover, Snow was later able to show a link between other cases of cholera and the differ-ent
water companies in London.此外,斯诺后来证明了另外几起霍乱病例与伦敦不同的自来水
公司之间有联系。 (教材P3)
情景导学
The company in our city has a link with those big investors from the West.我们市的这家公司与
西方的那些大投资者有联系。
The study tries to explain why there is a link between engaging in the arts and living longer.这项
研究试图解释为什么从事艺术和长寿之间有联系。
The Shenzhou ⅩⅤⅡ manned spacecraft and the front port of the Tianhe core module linked up
in orbit on October 26th.10月26日,神舟十七号载人飞船与天和核心舱前向端口在轨道上对接。
词汇 4 link n.联系;纽带 vt.把……连接起来;相关联
When you sleep, your brain sorts through everything that happened during the day, trying to link
new experiences to old memories.当你睡觉时,你的大脑会整理白天发生的一切,试图将新经历
与旧记忆联系起来。(2021北京)
用法归纳
①a link between...   ... ……与……之间的联系
②have a link    ...与……有联系
③link...   /with...把……与……连
接/联系起来(被动语态为“...be linked    /with...”)
④link    (with...)(与……)连接;(与……)结合
and
with
to
to
up
Through Snow's tireless efforts, water companies began to sell clean water, and the threat of
cholera around the world saw a substantial decrease.在斯诺的不懈努力下,自来水公司开始销售
干净的水,世界各地霍乱的威胁大幅减少。 (教材P3)
情景导学
There has been a decrease in traffic accidents.交通事故减少了。
To our delight, nowadays the number of cyclists going through red lights is on the decrease.令我
们高兴的是,如今骑自行车闯红灯的人数正在减少。
The greenhouse gas emissions have decreased by 4% by now.到目前为止,温室气体排放量已经
减少了4%。
词汇 5 decrease n.减少;降低;减少量 vt.& vi.(使大小、数量等)减少;减小;降低
Due to the adoption of appropriate epidemic prevention measures, the number of infected people
in this area has decreased (from thirty) to zero.由于采取了恰当的防疫措施,这个区域的感染人
数已经(从三十)减少到了零。
用法归纳
①   the decrease 在减少;在衰减;在降低
②a decrease    /of...……的减少
③decrease    ... 减少/降低了……
④decrease (from...)    ...(从……)减少/降低到……
on
in
by
to

词汇拓展
increase v. (使)增长,增多;增加 n.增长;增多;增加
increase (from...) to...(从……)增加到……
increase by...增加了……
on the increase在增长/增加
The country’s industrial output increased by 4% last year.去年,这个国家的工业产量增加了4%。
情景助记
Fortunately, we now know how to prevent cholera, thanks to the work of John Snow.幸运的
是,由于约翰·斯诺的努力,我们现在知道了如何预防霍乱。 (教材P3)
词汇拓展
①thanks to sb. for sth.因某事感谢某人
How can I ever express my thanks to you for all you've done 对你所做的一切,我怎么才能表
达谢意
②no thanks to sb./sth.虽然;并非由于;不归功于
③thanks a lot多谢
④表示“由于;因为”的短语还有because of、due to、owing to、as a result of、on account of
等。
词汇 6 thanks to 幸亏;由于
The flight was postponed on account of bad weather.因为天气恶劣,航班推迟了。
They worked day and night and their health began to suffer because of the poor conditions, but
they never gave up.他们夜以继日地工作,由于恶劣的条件,他们的健康状况开始变差,但他们
从未放弃。
Short writings missed as a result of an excused absence will be accepted.因故缺席而错过提交
时间的短论文可以接受。 (2022新高考Ⅰ)
Owing to heavy traffic jams, many people would like to choose the Underground in preference
to driving.由于严重的交通堵塞,许多人愿意选择地铁,而不是开车。
Her good health is chiefly due to proper diet and regular exercise.她良好的健康状况主要是因
为恰当的饮食和经常锻炼。 (写作·健康生活)
Moreover, in his use of maps and statistics, Snow transformed the way scientists study diseases.
此外,通过使用地图和统计数据,斯诺改变了科学家研究疾病的方式。(教材P3)
情景导学
It can be transformed from an ordinary shell into a finely carved artwork in a master's hands.在大
师的手中,它可以从一个普通的贝壳变成一件雕刻精美的艺术品。
用法归纳
transform sth./sb. (   ...)   ...把某物/某人(从……)变成……[被动语态sth./sb.+be
transformed (   ...)   ...]
词汇 7 transform vt.使改观;使改变形态 vi.改变;转变
from
into
from
into
词汇拓展
transformation n.改变;转变;改观
The way in which we work has undergone a complete transformation in the past decade.在过
去的十年里,我们的工作方式经历了彻底的变革。 (写作·科技进步和社会发展)
特别提醒
前缀trans-表示“转移、变化、超过、横穿”等。如transport运输(从一地转到另一地),trans-
plant移植,transcontinental横贯大陆的。
However, after the Songhu Battle broke out in 1932...不过,1932年淞沪会战爆发后……
(教材P7)
词汇拓展
①break away (from...)突然挣脱……;脱离……;甩掉……
The company wants to break away from its downmarket image.这个公司想摆脱它面向低消
费阶层的形象。
②break down破坏,消除;(机器、车辆等)出故障;(身体等)垮掉;情不自禁地哭起来;使分解
Getting the teenagers together will help to break down the barriers between them.把青少年聚
集起来有助于消除他们之间的隔阂。
③break through取得突破;冲破
词汇 8 break out (战争、打斗等不愉快的事情)突然开始;爆发
Scientists think they are beginning to break through in the fight against cancer.科学家认为他
们在对抗癌症方面开始有所突破。
④break up解散;结束;拆开;粉碎;破碎
Unfortunately, the band consisting of a singer, two guitarists and a drummer broke up soon.不
幸的是,这个由一名歌手、两名吉他手和一名鼓手组成的乐队很快解散了。
⑤break in破门而入;打断
Thieves had broken in while we were away.我们不在家时,小偷闯进屋里了。
⑥break into强行闯入;突然开始(笑、唱等)
Ryan really had made a difference to these children. He broke into a joyful smile.瑞安确实对
这些孩子产生了影响。他突然露出快乐的笑容。
⑦break off折断;中断;突然终止
Let's break off for a few minutes and have some water.咱们暂停几分钟喝点水吧。
...Qian made the decision to switch his major to aviation because he realised that China
needed its own powerful air force to protect and defend the country.……钱学森意识到中国需要
自己的强大的空军来保卫国家,因此他决定改学航空专业。 (教材P7)
情景导学
The movie The Battle at Lake Changjin describes a battle to aid North Korea and defend our
country from/against possible danger.电影《长津湖》描述了一场援助朝鲜并保卫我国免遭可
能的危险的战役。
用法归纳
defend...   ...保护……免受……的攻击/伤害;为……辩护/辩解,反驳……
词汇 9 defend vt.保卫;防守;辩解
from/against
词汇拓展
①defence(defense) n.保卫;辩护;防守
in defence of...为了保卫……;为……辩护(=in sb.'s/sth.'s defence)
come to sb.'s defence为某人辩护
I have to say in defence of the boy that he actually didn't break the school rule.
=I have to come to the boy's defence, saying that he actually didn't break the school rule.我不得
不为这个男孩辩护,说他实际上没有违反学校规定。
②defensive adj.防御的;自卫的;戒备的
After spending some time looking at all the defensive equipment at the wall, we decided it was
time for some action.在花了一些时间看墙上所有的防御设施后,我们决定是时候采取一些行
动了。 (2021全国甲)
As a graduate assistant at the California Institute of Technology during the 1930s, Qian
helped conduct important research into rocket propulsion...二十世纪三十年代在加州理工学院
担任研究生助理时,钱学森协助开展了火箭推进方面的重要研究工作…… (教材P7)
情景导学
The expert used to leave much of the work to his research assistant.这位专家曾把许多工作都交
给他的研究助理。
用法归纳
①research assistant     
②assistant manager协理;副经理
词汇 10 assistant n.助理;助手 adj.助理的;副的
研究助理
词汇拓展
①assist v.帮助;协助;援助
assist sb. in doing sth./assist sb. to do sth.帮助某人做某事
assist (sb.) in/with sth.帮助/协助(某人)某事
I love doing housework. I always assist my parents in doing the dishes after meals.我喜欢做家
务。我总是在饭后帮父母洗碗。 (2021全国乙)
②assistance n.帮助;支持;援助
with the assistance of...在……的帮助下
be of assistance有帮助;能帮上忙
come to one's assistance来帮助某人
Despite his cries, no one came to his assistance.尽管他喊叫,但没有人来帮助他。
With the assistance of social media apps, we can now get to know more people.在社交媒体应
用软件的帮助下,现在我们可以认识更多的人。
He received a hero's welcome from his homeland and was put in charge of not only develop-
ing China's rocket science but also its space and missile programme.他受到了来自祖国的英雄
般的欢迎,受命发展中国的火箭科学以及航天和导弹项目。 (教材P8)
词汇拓展
①in charge负责;掌管(常作后置定语)
If you have other questions about this speech contest, please call our office and look for the
person in charge.如果你对本次演讲比赛有其他问题,请致电我们的办公室寻找负责人。
(写作·通知结尾)
②in the charge of...由……负责/掌管(=in one's charge)
Some activities were in the charge of students themselves.一些活动由学生自己负责。
词汇 11 in charge of 主管;掌管
③take charge of...负责……;掌管……
To become a great leader, we must first take charge of ourselves.要想成为伟大的领袖,我们必
须首先掌控我们自身。
④in/under one's charge由某人照料
⑤free of charge免费
The leaflet is available free of charge from post office.小册子可以免费向邮局索取。
⑥charge (sb.) (some money) for sth.因某物(向某人)收费
The hotel charged us 530 yuan for accommodations.这家酒店收了我们530元的住宿费。
⑦charge sb. with (doing) sth.控告/起诉某人(做)某事
After the accident, people charged her with neglecting her duty.事故发生后,人们指控她玩忽
职守。
特别提醒
be in charge of前多以人作主语,指“某人负责/掌管某事”;be in the charge of前多以物作主
语,指“某事/物由某人负责/掌管”。类似的还有be in possession of、be in the possession
of、be in control of、be in the control of等。
Besides being brilliant, he was brave...除了才华横溢之外,他还勇敢…… (教材P9)
易混辨析
词汇 12 besides prep.除……之外(还) adv.而且;此外
except (用于所言不包括的人或事物前)除……之外,强调所排除的、不包括在内的,一般表示同类之间的关系
except for 除……之外,其后的内容与句子的主语往往不是同一类的;常对细节加以修正,含有美中不足之意
besides 除……之外(还),除去的部分也包含在整体内;还可作副词,意为“此外”
apart/aside from 具有besides(介词)、except以及except for的用法
in addition 此外,用法与副词besides类似
in addition to 除……之外(还),用法与介词besides类似
特别提醒
except有时可替换为except for,句意不变。但当用于句首时,不能用except,只能用except for。
Except for me, everyone passed the exam.除了我,大家都通过了考试。
The question was so difficult that nobody could come up with a good answer except Tom.这个
问题太难了,除了汤姆,没有人能想出好答案。
Your article is good except for a few spelling mistakes.你的文章(写得)不错,只是有几处拼写
错误。
Apart/Aside from the opening and closing ceremonies and some key matches, the ticket prices
will be acceptable to ordinary people.除了开幕式和闭幕式以及一些关键比赛之外,票价对普
通人来说是可以接受的。
词汇 释义 用法& 拓展
severe adj.极为恶劣的;十分严重的;
严厉的 severely adv.严重地;严厉地;
严格地
frustrated adj.懊恼的;沮丧的;失意的 frustrate v.使懊丧;使懊恼;使沮丧 
frustrating adj.令人懊恼的;令人沮丧的 frustra-tion n.懊恼
I bit back my frustration.我强忍住懊恼。(2022新高考Ⅰ)
高频词汇积累
infect vt.使感染;传染;影响(生义) She infected the children with her enthusiasm for music.她用她对音乐的热情影响了孩子们。
infection n.感染;传染
handle n.把手;拉手;柄 vt.处理;搬
动;操纵(车辆、动物、工具等);买,卖(生义) They were arrested for han-dling stolen goods.
他们因买卖赃物而遭逮捕。
handle the actual reservations处理实际预订(2023浙江1月)
pure adj.干净的;纯的;纯粹的 pure gold/silk纯金/真丝pure water纯净水(2023新课标Ⅰ)
purely adv.纯粹地;完全;仅仅
initial adj.最初的;开始的;第一的 initially adv.开始;最初;起初
cast vt.(cast, cast)投射;向……投以 (视线、笑容等);投掷;使人怀疑 cast a look/glance at...看/瞅……一眼
cast a shadow投下一片影子
shadow n.阴影;影子;背光处 v.跟踪;投阴影于(生义) in someone else’s shadow在其他人的阴影下(2020天津)
shade n.阴凉处,背阴处
pour v.倒出;倾泻;斟(饮料);下大
雨;不断涌向(或涌现) pour in 大量涌入
pour out倾诉;倒出;大量涌出
outstanding adj.优秀的;杰出的;明显的 an outstanding player杰出的运动员
outstandingly adv.非常,极其
gifted adj.有天赋的;有天才的;天资
聪慧的 be gifted in (doing)...在(做)……方面有天赋
gift n.天赋;礼物;赠品
have a gift/talent for...有……的天赋
abstract adj.抽象的;理论上的 n.(文献等的)摘要;抽象艺术作品 v.提取,分离 abstractly adv.抽象地
think abstractly抽象地思考
steady adj.稳定的;平稳的;稳步的 steadily adv.稳定地;稳步地
brilliant adj.聪颖的;绝妙的;明亮的 brilliant sunshine明媚的阳光
a brilliant idea一个绝妙的主意(2023新课标Ⅰ)
brilliantly adv.绝妙地;非常成功地;灿烂地
brilliance n.光彩;(色彩)鲜明;非凡的才能
above all 最重要的是;尤其是 after all毕竟;别忘了
in all总共;共计
(not) at all根本(不);完全(不)
fault n.弱点;过错 find fault (with sb./sth.)找茬儿;挑错;批评;挑剔
shift n.改变;转换;轮班 vi.& vt.转移;挪动;转向 shift from...to...由/从……向……转移/转变
the day/night shift日/夜班
vivid adj.生动的;鲜明的;丰富的 a fine and vivid description 细腻且生动的描述(2020新高考Ⅰ)
vividly adv.生动地
vividness n.生动;逼真;鲜明
He discovered that in two particular streets the cholera outbreak was so severe that more
than 500 people died in ten days.他发现在两条特殊的街道上霍乱的暴发如此严重以至于在十
天内就有五百多人死亡。 (教材P2)
情景导学
The disagreement was so sharp that neither he nor I knew how to settle it.分歧如此尖锐,以至于
他和我都不知道怎么解决。 (2022全国甲)
The teacher spoke so slowly that most of us could follow him.老师讲得很慢,我们多数人都能够
听明白他的话。
It was so cold a day that nobody was in the street.天气很冷,街上一个人也没有。
经典结构 情境破
结构 1 so...that...引导结果状语从句
There are so many people that he has to force his way through them.人太多了,他不得不强行穿
过他们。 (读后续写·动作描写)
There is no need to worry. You've done so much schoolwork that you are sure to pass the exam.
没有必要担心。你做了这么多功课,一定能通过考试。
用法归纳
  so...that...结构中的so是副词,常常用来修饰形容词或副词,常用句式:
①so+   /   +that...
②so+adj.+   +    +that...
③so+   /few+可数名词复数+that...
④so+   /little(少)+不可数名词+that...
adj.
adv.
a/an
可数名词单数
many
much
结构拓展
①such...that...“如此……以至于……”也可引导结果状语从句,常用句式:
such+a/an+adj.+可数名词单数+that...
such+adj.+可数名词复数/不可数名词+that...
They are such good students that the teacher likes them very much.他们是如此优秀的学生,以
至于老师非常喜欢他们。
②so that既可以引导目的状语从句(意为“为了,以便”,常与情态动词连用),又可以引导结果
状语从句(意为“所以,因此”)。
I spoke loudly, so that all the students heard me clearly.我说话声音很大,因此所有学生都清
楚地听到了。(结果)
I will speak loudly so that all the students can hear me clearly.我将大声说话以便所有的学生
都能听清楚我说的话。(目的)
③in order that引导目的状语从句,相当于so as to(不能置于句首)/in order to。
At the debate, members from the committee exchanged their views in order that they could im-
prove their learning style(= in order to/so as to improve their learning style).在辩论中,委员会成
员交换了意见,以改进他们的学习方式。
特别提醒
当名词前有many、much、few、little(意为“少的”而不是“小的”)修饰时,要用“so...
that...”而不能用“such...that...”。
Many scientists subscribe to the view that it is human activity that has caused global warm-
ing.许多科学家赞同这样的观点:是人类活动导致了全球变暖。 (教材P4)
情景导学
It was Tom that/who told her the exciting news yesterday.昨天是汤姆告诉了她这个令人兴奋的
消息。(强调主语)
→Was it Tom that/who told her the exciting news yesterday 昨天是汤姆告诉了她这个令人兴
奋的消息吗 (一般疑问句式)
→Who was it that told her the exciting news yesterday 昨天是谁告诉她这个令人兴奋的消息
的 (特殊疑问句式)
It was an old magazine that Mary found in the bag.玛丽在包里找到的是一本旧杂志。(强调宾语)
结构 2 It is...that... 强调句型
→Was it an old magazine that Mary found in the bag 玛丽在包里找到的是一本旧杂志吗 (一
般疑问句式)
→What was it that Mary found in the bag 玛丽在包里找到的是什么 (特殊疑问句式)
It was in the supermarket that we met each other for the first time.就是在这个超市里我们第一
次遇见了彼此。(强调地点状语)
→Was it in the supermarket that you met each other for the first time 你们是在这个超市里第一
次遇见彼此的吗 (一般疑问句式)
→Where was it that you met each other for the first time 你们是在哪儿第一次遇见彼此的 (特
殊疑问句式)
It was not until twelve o'clock that he went to bed last night.昨天晚上他一直到十二点才睡。
(对not...until...的强调)
→Was it not until twelve o'clock that he went to bed last night 昨天晚上他一直到十二点才睡
吗 (一般疑问句式)
→When was it that he went to bed last night 昨天晚上他是何时去睡的 (特殊疑问句式)
用法归纳
①强调句型基本结构:
陈述句式:It is/was+被强调部分+that/who+句子其余部分.
一般疑问句式:Is/Was it+被强调部分+that/who+句子其余部分
特殊疑问句式:    +is/was it+that+句子其余部分
对not...until...的强调:It is/was not until+被强调部分+that+句子其余部分.
②被强调的部分可以是主语、   、   。当被强调的部分指人时,既可用that,也可用
特殊疑问词
宾语
状语
   。指物时只能用that。
特别提醒
①强调句型的判断:将强调句结构中的It is/was和that/who去掉,如果句子剩下的部分不缺少
任何成分,语序稍加调整后仍是一个完整的句子,这个句子就是强调句,否则就不是强调句。
②主谓一致:被强调的部分如果是句子的主语,that/who之后的谓语动词在人称和数上应与被
强调的主语保持一致。
who
Sentence 1
译文 霍乱曾经是世界上最令人恐惧的疾病之一,直到一位英国医生约翰·斯诺(向人们)展示
了如何战胜它。
长难句 图解
时间
宾语
Sentence 2
译文 这位女士似乎非常喜欢从水泵抽上来的水,每天都让人(从那里)打水运到家里来。
主语
结果
Sentence 3
译文 钱学森备受人们的尊敬,《钱学森的故事》一书的作者称他为一位具有“伟大科学思
想和科学精神”的人,并且他热爱祖国,用努力、成就和奉献来为祖国服务。
定语
谓语
Sentence 4
译文 不过,1932年淞沪会战爆发后,钱学森决定改学航空专业,因为他意识到中国需要自己
的强大的空军来保卫国家。
时间
原因
宾语
Sentence 5
译文 他愿意说别人不敢说的话,愿意做别人不敢做的梦。
宾语
宾语
表语从句
一、表语从句的定义
在句中充当表语的从句叫表语从句,它位于系动词之后。可以接表语从句的系动词有be、
look、remain、seem等。
二、引导表语从句的从属连词的用法
情景导学
The problem is whether the air pollution can be controlled.问题是空气污染能否被控制住。
Private jet pilots are still needed. That is because the rich are continuing to travel as much as be-
fore.私人喷气式飞机驾驶员仍然被需要。那是因为富人在继续像以前一样频繁地旅行。
The amazing thing about the hot spring is that the lower the temperature gets, the hotter it is!这个
必备语法 情景破
温泉的神奇之处在于,(周围环境的)温度越低,它越热!
用法归纳
  引导表语从句的从属连词that、whether、because、as if/though在从句中不作成分,其中
①   无词义,但不能省略;because后接表示原因的句子;whether表示“②   ”;as if/
though表示“好像”。
三、引导表语从句的连接代词的用法
情景导学
The puzzle is who got close to the dying patient.难题是谁接近过那个临终的病人。
This is what they do at most banks and fast-food restaurants.这就是他们在大多数银行和快餐店
做的事情。
The question is whose car is the most expensive.问题是谁的车是最贵的。
that
是否
用法归纳
  连接代词引导表语从句时,除了起连接作用外,还可以在从句中充当③   、④ 
、定语和表语,本身具有词义。常见的连接代词有what、which、who、whose、whom、
whoever、whatever、whichever等。
四、引导表语从句的连接副词的用法
情景导学
The point is when we can find the solution to the problem.关键是我们何时能找到解决这个问
题的方法。
Scientists think that the continents weren't where they are today.科学家们认为,过去的大陆并不
在现在所处的位置上。
The discussion is how we can solve the problem.讨论内容是我们如何才能解决这个问题。
主语
宾语
用法归纳
  连接副词引导表语从句时,除了起连接作用外,还可以在从句中充当⑤   ,本身具有
词义。常见的连接副词有when、where、why、how。
五、表语从句中的虚拟语气
情景导学1
My suggestion is that we (should) adopt a more flexible approach.我的建议是我们应该采用一
种更灵活的方法。
The request is that every student (should) donate one or two books.要求是每位学生捐一两本
书。
用法归纳1
  当主句的主语是advice、suggestion、order、command、request、requirement等表示建
状语
议、命令或要求的名词时,表语从句中常用虚拟语气,即从句谓语用“⑥       ”
的形式,其中should可以省略。
情景导学2
She looks as if she were ten years younger.她看起来仿佛年轻了十岁。
It seemed as if he had traveled to space.他好像去太空旅游过。
It looks as if it's going to rain.天看上去好像要下雨。
用法归纳2
当表语从句的引导词是as if或as though时,后面的表语从句如果表示假设的情况,需使用虚拟
语气:用⑦      表示与现在的事实相反;用⑧      表
示与过去的事实相反;用“would/could/might+动词原形”表示与将来的事实相反。如果表
示事实或很可能发生的事,则不用虚拟语气。
should+动词原形
一般过去时
过去完成时
六、其他需注意的问题
情景导学
He did not go to the cinema last night. That was because he had to help his sister with her home-
work.昨天晚上他没有去看电影,那是因为他得帮助他的妹妹做作业。
Tom overslept this morning, and that was why he was late for work.汤姆今天早晨睡过了头,那
就是他上班迟到的原因。
用法归纳
  this/that is/was why后面接的内容表示⑨   ,翻译为“这/那是……的原因”;this/that
is/was because后面接的内容表示⑩   ,翻译为“这/那是因为……”。
结果
原因
即时巩固
Ⅰ.单句语法填空
1.(2021新高考Ⅰ)Rome can be pricey for travelers, which is      many choose to stay in
a hostel(旅社).
2.(2020全国Ⅱ)The good news is      it's simple to learn and can be worth the effort.
3.(2020天津)Making a full-length clay(黏土) figure would not exhaust my strength—and that is
     I intend to do!
4.The problem is      should be responsible for the task.
5.As Professor Scotti often puts it, success is      high you jump when you hit the bottom.
6.My car broke down on my way to work. That was      I was late for work this morning.
7.You just assume I want to be a lawyer, but that's only      you are a lawyer.
why
that
what
who
how
why
because
8.My question is      he is going to the party or not.
9.The first time we had dinner together was      we were visiting the Great Wall.
10.Reading this book made me feel as if I      (travel) to the mysterious land and
talked with the wise man.
Ⅱ.完成句子
1.我的建议是你在学校应该积极参与这些讨论。
My advice is                            these discussions at
school.
2.他没有被重点大学录取的原因是他学习不够努力。
The reason why he was not admitted into a key university was               
enough.
whether
when
had travel(l)ed
that you should participate actively in
that he didn't study hard
3.我们可以说的是,文化和烹饪息息相关。
What we can say is                  hand in hand.
4.他以前看过这部电影。那就是为什么他昨晚没有看。
He had seen the film before. That was                      last
night.
5.我的大消息是,我们都在考虑寒假去中国旅行。
My big news is                      _______
going on a trip to China in the winter vacation.
6.当我还是个小孩子的时候,春节期间的红包是我最期待的。
When I was a little child, the red packet during the Spring Festival was          
  most.
that culture and cuisine go
why he didn't see it
that we're all thinking about/that we are all considering
what I expected
7.事实是他已经失去了参加比赛的机会。
The fact is                 to take part in the competi-tion.
that he has lost the chance