1、Unit 1Unit 1Section B Learning about LanguageSection B Learning about Language名 词 性 从 句表语从句语法连接词1类别类别连接词连接词例句例句从属连词从属连词that不作句子成分，也没有意义，通常不可省略My suggestion is that you should have patience.我的建议是你应该有耐心。whether 不作句子成分，但有“是否”的意义，一般不用if代替The question is whether we can cut down the costs of the product.问
2、题是我们能否降低产品成本。because,as if/through等He has to watch his weight.That is because he has heart disease.他不得不注意自己的体重，那是因为他有心脏病。It sounds as if someone is knocking at the door.听起来好像有人在敲门。连接代词连接代词Who,whom,whose,what,which,whoever,whatever,whichever等。在从句中作主语、宾语、表语或定语The problem is who can complete the diffic
3、ult task.问题是谁能完成这项困难的任务。This is just what we are always looking forward to.这正是我们一直盼望着的。连接副词连接副词when,where,why,how等。在从句中作状语That is where he was born and brought up.那就是他出生和被养大的地方。Their difficulty is how they can clear their debts.他们的困难是怎样才能还清债务。练 习1.The trouble is _ I am anxious to telephone Mr.Smith
4、but I have lost his number.2.What the doctors really doubt is _ my mother will recover from the serious disease soon.3.The reason _ he didnt sign up for the course is _ he had no interest in body building.4.If Im a bit sleepy,its _ I was up all night.thatwhetherwhythatbecause5.See the flags on top o
5、f the building?That was _ we did this morning.6.This is _the Shenzhou VI Spaceship landed.7.What I cant understand is _ there are more and more junk emails on the Internet.whatwherewhy语法需要注意的问题2（1）as if/though 引导的表语从句的语气as if/though 引导的表语从句常置于连系动词look,seem,appear,sound,feel 等后。若表述真实的情况，就用陈述语气；若表述与客观
6、事实相反的假设，则用虚拟语气。e.g.It seems as if he benefits a lot from the project.看起来好像他从这个项目中获益不少。(陈述语气）It looks as if/though he were drunk.他看上去好像喝醉了。(虚拟语气）练 习1.All this was over twenty years ago,but it is _ it were only yesterday.2.It seems _(好像他不了解此事故).as ifas if/though he knew nothing about the accident（2）表语
7、从句的特殊句式The reason why.is that.的原因是（why引导定语从句，修饰 the reason,that引导表语从句）This/That/It is because.这那是因为（because引导表语从句，从句表原因）This/That/It is why.这那就是的原因。（why引导表语从句，从句表结果）e.g.The reason why he didnt come is that he didnt receive the invitation.他没来的原因是他没有收到请柬。The woman was weeping bitterly.Thats because he
8、r son was drowned in a river.那位女士痛哭流涕，那是因为她的儿子在河中溺亡了。（先果后因）The womans son was drowned in a river.Thats why she was weeping bitterly.那位女士的儿子在河中溺亡了，那是她痛哭流涕的原因。（先因后果）练 习1.I didnt phone her,and thats _ she got angry with me.2.that is _(他拒绝接受它的原因).whywhy he refused to accept it（3）表语从句中的虚拟语气主语是表示“建议、命令、要求
9、”的名词，如 suggestion,advice,proposal,order,command,request,requirement,demand 等时，表语从句应使用虚拟语气，即从句谓语用“should+动词原形”，should可以省略。e.g.My suggestion is that we(should)set off early tomorrow.我的建议是我们明天早点儿动身。His order was that all boys gather quickly around the car.他的命令是所有男孩子要速在汽车周围集合。练 习1.My suggestion is that we _(read)English newspapers to improve our English.2.My advice _(是你尽可能经常地练习英语).(should)readis that you(should)practice speaking English as often as possible.谢 谢 观 看Thanks for watching
