外研版 (2019)选择性必修 第三册Unit 2 A life’s work获奖课件ppt
展开Unit 2
A life’s work
Period Four Grammar—Predicative clauses
达标检测 当堂检测 基础达标演练
语法导学 感悟规律 重点难点剖析
内容索引
感知以下句子,补全方框下的小题
1.My idea is that his plan should be carried out immediately.2.What he wants to know is whether he should start a new set of computations or not.3.It looks as if the coming autumn harvest will be even better than the last one.4.The question is who is the right person for the position.5.What I want to know is when she’ll be back.6.The suggestion is that we (should) come to his assistance at once.
语法感知
语 法 导 学
感悟规律 重点难点剖析
1.由句1,2可知, , 可引导表语从句,连词在从句中 担任成分。2.由句3可知,as if/though也可引导 从句。3.根据句4,连接代词引导表语从句时要在从句中 。4.由句5可知,连接副词引导表语从句时往往在从句中担任 。5.根据句6,suggestion等后的表语从句中要用 ,即谓语动词用“ ”。
that
whether
不
担任成分
状语
表语
虚拟语气
(should) do
在句中充当表语的从句称为表语从句。引导表语从句的有连接词 as if/though,because,that,whether;连接代词what,which,who,whom,whose;连接副词when,where,why,how。表语从句主要位于系动词be之后,有时可用在look,seem,taste等之后。
语法精析
一、由连接词引导的表语从句1.that引导的表语从句(that在从句中不担任成分)Your greatest fault is that you are careless.你最大的毛病是粗心。2.whether引导的表语从句(whether在从句中不担任成分)The point is whether we ought to recommend him.问题是我们是否应该推荐他。[温馨提示] 一般不用if引导表语从句。
3.as if/though引导的表语从句,从句中的谓语动词可用陈述语气,也可用虚拟语气The meat tastes as if it has already gone bad.这肉尝起来似乎已经坏了。He looks as if he were in great pain.他看上去很痛苦。
4.why,because引导的表语从句This is because the earth is traveling around the sun.这是因为地球绕着太阳转。That is why today over 40% of Californians speak Spanish as a first or second language.那就是今天有超过40%的加利福尼亚人把西班牙语作为第一或第二语言的原因。
[温馨提示] why和because引导的表语从句的区别
二、由连接代词引导的表语从句 连接代词引导表语从句时,除连接主从句外,还在从句中担任一个成分,可作主语、宾语、表语或定语。The turning of the earth on its own axis is what makes the change from day to night.地球的自转是昼夜交替的原因。(主语)The question is which of the units we choose to be the fundamental one.问题是我们选哪一个作基本单位。(宾语)Times aren’t what they were.时代不同了。(表语)What I want to know is whose bag was stolen.我想知道谁的包被偷了。(定语)
三、连接副词引导的表语从句连接副词除引导表语从句外,还在从句中充当状语,可表时间、地点、原因、方式等。This is where our basic interest lies.这就是我们的根本利益所在。(地点)That’s why we decided to put the meeting off.那就是我们决定推迟会议的原因。(原因)The question is how the people can find an effective way to store the sun’s heat.问题是人们如何才能找到一种有效的方法来储存太阳的热量。(方式)
四、表语从句与虚拟语气当主语中含有suggestion,advice,order,demand,requirement,request等时,表语从句的谓语动词用“(should) do”。The doctor’s advice was that you (should) give up smoking.医生建议你戒烟。Our demand is that you (should) finish the work as quickly as possible.我们的要求是你们尽快完成这项工作。
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Ⅰ.单句语法填空
达 标 检 测
当堂检测 基础达标演练
1.My question is will marry a poor man like me.2.The problem is experiment we should do first.3.Raw material is we are badly in need of.4.What I want to know is watch it is.5.What I advise is that you (go) at once.6.I broke her favourite glass.That’s she got angry with me.7.He has heart disease.That is he has been smoking too much.
who
which
what
whose
(should) go
why
because
8.My question is I shall get in touch with him when I arrive in Beijing.9.What I was uncertain about was we could overcome the difficulties all by ourselves.10.One of the advantages of electric power is it can be transmitted over long distances very easily.
how
whether
that
Ⅱ.完成句子
11.The order was that the company at once.命令连队立刻过河。12.That’s in learning English.这就是他在学习英语中战胜所有困难的方法。13.They remain unchanged.They are .他们一点没变。他们还和从前一样。14.She had a stomachache. she ate so little.她胃疼,所以她只吃了一点儿东西。15.When a pencil is partly in a glass of water,it looks .当把一半铅笔插入装有水的玻璃杯中时,看上去就好像铅笔断了。
(should) cross the river
how he has overcome all the difficulties
what they used to be
That is why
as if it were broken
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