Unit 3 Grammar and usageppt课件（2020）新牛津译林版高中英语选择性必修第三册.pptx

1、Unit 3 Back to the pastGrammar and usagestep 1 认识表语及表语从句找表语 说明主语的身份、性质、品性、特征和状态She is a mother of two babies.Her cake tastes good.She looks awesome.She keeps working out every day.The whole family is out of order.名词充当表语动名词充当表语形容词充当表语介词短语充当表语形容词充当表语Yesterday is history.Tomorrow is a mystery.Today is

2、a gift.Thats why its called the present!昨日之日不可知，明日之日不可求，而今天是一笔财富，这就是为什么我们称其为现今（现金）。表语从句找表语 说明主语的身份、性质、品性、特征和状态表语从句在复合句中作主句的表语，用于系动词之后，表语从句和主语指同一内容，它对主语进行解释、说明，使主语的内容具体化。Definitionstep 2 表语从句规则Rule 1: 表语从句在句子中作表语，可以由表语从句在句子中作表语，可以由that引导，引导，that在从句中不充在从句中不充当成分。当成分。The truth is that they are fully pre

3、pared for the trip.翻 译 ： 麻 烦 是 我 把 他 的 地 址翻 译 ： 麻 烦 是 我 把 他 的 地 址（address）丢了。）丢了。The trouble is that I have lost his address. Special rules我的建议就是你做出决定之前仔细考虑一下。(think it over)My advice is that you (should) think it over before you make a decision.(在表“建议，劝说，命令”的名词suggestion, advice, request, 等后面的表语从句中

4、，谓语动词用“should + 动词原形”（虚拟语气），should可省略) Rule 2: 表语从句也可以由表语从句也可以由whether、who、what、when、where、why、how等词引导。等词引导。My doubt is whether we can get there on time.The question is who is responsible for the accident.Thats not what I wanted.The problem is how we can raise enough money for the project. Rule 3: 表

5、语从句也可以由表语从句也可以由as if/as though引导。引导。It looks as if there is a storm coming. as if / as though 似乎，好像似乎，好像 1)听上去好像有人在敲门。 2) At that time, it seemed as though I couldnt think of the right word. It sounds as if someone is knocking at the door. 3) Look at the dark clouds. It looks as if there is a storm

6、coming. 4) It looks as if she were drunk. 5) It appears as if he hadnt met her. 当时，我似乎怎么也想不出一个恰当的字眼来。(与事实相符)(与事实相反，事实是她未醉)(与事实相反，事实是他见过她) that / whatwhat1)The city is no longer _ it was ten years ago.2) The fact is _ we should depend on ourselves.that _surprised me most was _ he spoke Spanish so flu

7、ently.thatWhatwhat because / whybecause1) He failed the math exam. Thats _he was too careless.2) He was too careless. Thats _ he failed the math exam.why The reason _ he was absent from the meeting was _ he fell ill suddenly.thatwhybecausestep 3 表语从句练习The trouble was we could manage it ourselves or

8、not.She looks she were ill.The only reason for my coming is I hoped to see you again.The trouble is we have no money.The biggest question is will take charge of the company.Liberty means responsibility. That is most men dread it.The question is the film is worth seeing.whetheras ifbecausethatwhowhet

9、herwhyExploring the rules1) Learning and travelling were exactly what helped him in his later career as a historian.2) His fathers dream was that one day he could write a great masterpiece recording what had happened in history.3) His chief concern was whether he could do his job more effectively an

10、d efficiently.Working out the rules We can use that to introduce a predictive clause when the clause is a _. We can use whether to introduce a predictive clause when the clause is a _. We can use what, why, when, where, etc. to introduce a predictive clause when the clause is a _.statementyes-no questionwh-questionApplying the ruleswhichthatthatwhywhetherhowApplying the rulesthatthathowwhyThank You.