英语选择性必修 第二册Unit 1 Science and Scientists背景图课件ppt

这是一份英语选择性必修 第二册Unit 1 Science and Scientists背景图课件ppt，共23页。PPT课件主要包含了什么是表语，主+系+表，表语从句，特殊句式，系动词，从句引导词，表从的运用，what，where，who等内容，欢迎下载使用。
Henry was an American businessman.
Henry met an American businessman.
I am a student.He is selfish .红体字有什么特点呢？
位置:系动词后（be)表语用来描述主语是什么，包括主语的身份，特征和状态等。表语接在系动词后面。
新闻 是 这样。
The news is this.
新闻 是 狗子追的我。
The news is that the new film cmes ut sn.
主语 系动词 表语
主语 系动词 表语
The news is that the new film cme ut sn.
主语 系动词 表语从句
定义：表语从句放在_________之后，充当复合句中的___________。结构：___________________________。
主语+系动词+引导词+简单句
表语从句是对主语进行解释、说明，使主语的内容具体化。表语从句必须用陈述语序。
1.感官类系动词（sund,lk,taste,smell,feel)
2.变化类系动词(get,fall,grw,turn,g,becme…)
保持类系动词（keep,remain,stay）
似乎类系动词（ seem, appear ）
证明类系动词（prve, turn ut)
系动词后的成分为表语。系动词后的从句为表语从句。
（am, is, are, was, were)，意为“是”
1 Linking-v系动词
2 Subrdinating cnjunctin引导词
表语从句要使用陈述语气(主谓 )
表示建议、命令、要求等名词后的表语从句要用虚拟语气：（shuld）+d
1）连词：在从句中不充当成分
1.that ____ 意义，在表语从句中 ______ 成分,起______ 作用，________ 省略。
连接词whether起 _____ 作用，意为“_________________”，在句中也不作任何成分（注意：if ______引导表语从句)。
as if / as thugh 意为“_________________”引导的表语从句常置于系动词lk, seem, sund,be,becme 等后面。
because意为“______” 引导表语从句强调原因，注意与why的区别。
2）连接代词：在从句中充当主语、宾语、表语、定语
连接代词 what, which, wh, whm, whse 除在句子中起 ______ 作用外，还可在从句中作 _____、_____、_____ 或 ______，且各有词义。
The prblem is __________ culd find ut a cure fr the disease
wh
What I have nt decided is ______ I am ging t visit.
That’s ________ I want t d if I had the mney.
what
Bth my parents have given me sme advice n hw t save mney. But the questin is ______ advice I shuld take.
whse
1　选词填空(what/wh/where)①The prblem was ______culd d the wrk.②This is ____ we want t d .③My prblem is __________ cat is suitable fr me.
What Jhn Snw shwed t the wrld was ______ chlera culd be vercme. The exact places Snw marked n the map were _______ all thse wh died had lived.What Snw was determined t find ut was ________ mre than 500 peple died in ten days.The next majr explsin is ging t be ________ genetics and cmputers cme tgether.
hw
where
when
3）连接副词：在从句中充当方式、地点、原因、时间状语
连接副词where, when, why, hw除在句中起______ 作用外，在从句中还充当_______、______、______或______状语，本身具有词义。
2　选词填空(why/hw/where)①This is ______ Mary met her husband fr the first time.②This is ____ we put ff the meeting.③This is ____ we've dealt with the ecnmic crisis.
3 Attentin1: 引导词that, because, why的区别
1. I think that’s _____ he was s angry.2. I think it is ________ yu are ding t much.3. The reasn ______ he was s late is _____ it was raining hard.
that / this / it + is / was +why + ________ (原因 / 结果) 表示“_________________________”that / this / it + is / was + because + _______ (原因 / 结果) 表示“________________________”the reasn why … is that … 中 why 是引导 _________，that 引导的是 _________，表示“___________________”。
这 / 那就是……的原因
这 / 那就是因为……
3　选词填空(why/that/because)①David was injured in the training.That was _______he didn't take part in the Olympic Games.大卫在训练中受伤了，那就是他没有参加奥运会的原因。②He did nt see the film last night.That was__________he had t help his little sister with her hmewrk.昨天晚上他没去看电影。那是因为他得帮他的妹妹做作业。③The reasn ____ he was absent frm the meeting was _________he was ill．他缺席会议的原因是他病了。
This is __________I want.The prblem was ______culd d the wrk.The village is _________ I used t spend my hliday.That is ___________ we never thught f it.The truble is __________ we are shrt f funds.My prblem is __________ cat is suitable fr me.I ’d like t start my wn business—that’s ________ I want t d if I had the mney.What I want t knw is _______will supprt me.
9. There was an accident. That’s ______he was late fr cncerns me mst is ______will be my teacher next term. 11.The truble is _______I have lst his questin is __________the film is wrth ’s ________I bject t the plan
3 Attentin2: 表语从句中的虚拟语气
My prpsal is that we (shuld) start early tmrrw.My advice is that we (shuld) get there by train.My suggestin is that we (shuld) g and help him.
主语是表示___________________等的名词时，表语从句中谓语动词用“shuld + 动词原形”，shuld可省略
一坚持 insistence二命令 rder, cmmand 三建议 advice, suggestin, prpsal, recmmendatin四要求 requirement, request, demand, desire
1. 表语从句的结构:
主语+系动词+引导词 + 简单句
从属连词: that, whether, as, as if/thugh, because（不充当成分 ）
连接代词: wh, what, which, whm, whse, ...+ever
连接副词: when, where, hw, why
3）if 不引导表语从句。
4）表语从句的虚拟语气。
2）主语为reasn时，引导词用that