人教课标版高中英语选修8第一单元名词性从句PPT课件.ppt

名词性从句,1.Could you tell me where he lives? 2.That he passed the exam made his parents happy. 3.Thats why she didnt come yesterday. 4.I have no idea where my teacher lives. 5.Whether he will come is unknown. 6.The question is whether it is worth doing. 7.I really dont know what she is doing. 8.Father made a promise that he would buy me a car.,一.名词性从句的共性 名词性从句连接词 名词性从句连接代词有三类： 1.连接代词:who,whoever, whose, whom,whomever, what,whatever, which， whichever有词义，在从句 中担任成分，如主 语、表语、宾语、或定语等； 2.连接副词:when, where, why, how，有词义， 在从句 中担任成分，作状语； 3.连接词:that, whether, if,;if (whether) 虽有词 义，但在从句中不担任成分；that 无词义，在 从句 中不担任成分，有时可省略。,所有的名词性从句一律用陈述语序. When he will arrive is not known. I dont know how I can get through the exam. That was how they were defeated.,No one can be sure _ in a million years. what man will look like B.what will man look like C.man will look like what D.what look will man like,A,时态一致 1.在宾语从句中，当主句是一般现在时，其从句的 谓语根据各种需要用各种时态，但如果是过去 时，从句要用相应的过去时态。 Mary is very diligent. Tom says Mary is reading English. Mary will give us a talk. Mary has been caught in the rain. Mary was very diligent. Tom said Mary was reading English. Mary would give us a talk. Mary had been caught in the rain.,但是，宾语从句表示事实、格言、谚语等，从句的时态仍用一般现在时。 When I was a small child , mother told me that the earth travels around the sun.,The teacher told us the earth _ _ _around the sun. A.goes B.went C.is going D.has gone,A,2.在主语从句、表语从句或同位语从句中，也要注 意主从句的谓语动词要一致，关键要注意动作发 生的先后。 Who will win the first prize in the contest is not known to us. Have you any idea why he was so rude?,语气一致：只要表示“要求、命令、建议”的各 类名词性从句，都要用虚拟语气 (should) + 动 词原形. My suggestion is that we (should)turn the land into rice fields. He advised that all the work (should) be finished within this month.,it作形式宾语的特殊句型：,(1).owe it to sb. that “把归功于 “ (2).Leave it to sb. that“把留给某人去做“ (3).take it for granted that “想当然“ (4).keep it in mind that “记住“ (5).I like/enjoy/hate/dislike/love/appreciate it that/if/when (6).see to it that =make sure that “务必、确保“ (7).depend/rely/count on it that “ 可以相信/指 望/ 放心“ (8).take it that “认为/想 “,(1).I owe it to you that Im still alive. (2).Dont take it for granted that they will support you. (3).Please keep it in mind that smoking is harmful to your health. (4).I hate it when people talk with their mouth full. (5).Would you see to it that the villagers have clean drinking water?(你负责保证） (6).You may depend on it that they will help you.(你可以放心他们会帮助你的) (7).Im counting on it that you will come.(我正指望 着你回来) (8).I take it that they will succeed sooner or later.,以下几种情况只用whether:,1.作动词discuss、decide和介词后的宾语从句 eg:We are discussing whether we can finish the work on time.,2.whether or not连在一起时 eg:He wants to know whether or not we will go there.,3.whether后可接不定式短语 eg:He doesnt know whether to attend the party.,名词性从句要注意的几大问题,一.that与what在引导名词性从句时的区别,that在引导名词性从句时,不在从句中作成分, 也无具体意思,只起连接作用；that引导宾语从句通常可省略，但引导主语从句（在句首时)、表语从句和同位语从句时不可省略。what在引导名词性从句时既起连接作用,又要在从句中充当成分,在任何情况下它都不能省略,它有具体意义,表示“的事情/事物/话/东西/地方/人等”,相当于the+n.(things/person/place/) that。,1._ we cant get seems better than _ we have. A.What; what B.what; that C.That; that D.That; what 2._ caused the accident is still a complete mystery. A.What B.That C.How D.Where 3._ matters most in learning English is enough practice. A.What B.Why C.Where D.Which,A,A,A,Whether和 if的区别,whether和if都可引导名词性从句,在引导宾语从句时,一般可互换: I want to know whether / if she lives there. 但在如下情况下只能用whether： 主语从句(在句首时)、表语从句、同位语从句只 用whether引导; Whether Ill go there isnt decided. Its not decided whether / if Ill go there. (it作形 式主语时，可用if),The question is whether it is worth doing. The question whether we should go with them must be decided at once. 作动词discuss、decide和介词后的宾语从句 用whether不用if; We discussed whether we should go there by air. Everything depends on whether the situation will improve., 在宾语从句中whether or not连在一起时,不能 用if替换; He wants to know whether or not we want dinner. whether后可接不定式短语,而if则不能. He doesnt know whether to stay or not. 以下情况只用if: 宾语从句是否定句时，只用if，不用whether. I dont care if he doesnt show up .(他来不来我 都不在乎 ) if可以引导条件状语从句，意为“如果”. If it rains,we will stay at home tomorrow.,whatever与no matter what的区别 no matter what 只能引导让步状语从句“无论什么”，“不管什么”，,但whatever既可引导让步状语从句, 还可引导名词从句。 Dont trust