Unit 5 Discover useful structures主语从句 课件--高中英语人教版（2019）选择性必修第一册.pptx

Unit5 Working the Land Period3 Discover useful structures选择性必修一选择性必修一人教版（人教版（2019）Observe the following sentences and discover Subject Clauses.1、What Yuan Longping really cared about was not money or celebrity.2、That Yuan Longping had realised his dream of seawater rice surprised the whole world.3、It surprised the whole world that Yuan Longping had realised his dream of developing seawarer rice.Presentation1.主语从句主语从句:在复合句中充当主语成分的句子在复合句中充当主语成分的句子.That he finished writing the composition in such a short time surprised us all.此此复复合合句句主主要要描描述述的的是是某某事事让让我我们们惊惊讶讶，某某事事就就是是该该复复合合句句的的主主语语，因因此此“That he finished writing the composition in such a short time”便是该复合句的主语从句。便是该复合句的主语从句。Study引导主语从句的连词主要有：引导主语从句的连词主要有：从属连词：从属连词：that、whether连连接接代代词词：who、whoever、whom、whose、what、whatever、which、whichever连连接接副副词词：when、where、how、why、whenever、wherever、however引导词引导词+主语主语+动词动词=主语从句主语从句Study试翻译：试翻译：1 1、我们是否会去郊游仍旧未知我们是否会去郊游仍旧未知。2 2、他撒谎让老师很生气。、他撒谎让老师很生气。3 3、他得了第一名让我很惊讶。他得了第一名让我很惊讶。Study is unknown.Whetherwewill go for an outing主主语从句从句2、That he told a lie made the teacher angry.3、That he got the prize surprised me.主语从句的时态不受主句时态的影响和限制主语从句的时态不受主句时态的影响和限制,主语从句常作主语从句常作单数单数。1、Who will be our monitor hasnt been decided yet.谁当我们的班长尚未决定。2、Whom we must study for is a question of great importance.“我们为谁而学习”是个很重要的问题。3、What caused the accident is unknown.事故的起因是未知的。4、Whatever you did is right.你做的任何事都是正确的。5、Whom the watch belongs to is unknown.手表的归属是未知的。6、What we need is time.我们需要的是时间。7、What we need are good doctors.我们需要的是好的医生。Study主语从句必须有主语从句必须有引导词引导词；主语从句用陈述句语气。；主语从句用陈述句语气。连词位于句首连词位于句首不能省略不能省略主语从句大多数情况下视为第三人称单数，但也有例外。主语从句大多数情况下视为第三人称单数，但也有例外。主语从句引导词的选择主要是根据从句的结构和意义来选择。主语从句引导词的选择主要是根据从句的结构和意义来选择。如果从句的意义和结构如果从句的意义和结构完整，则用完整，则用thatthat。如如果果从从句句的的意意义义和和结结构构不不完完整整，则则根根据据从从句句的的意意义义和和结结构构选选择择相相应的引导词。应的引导词。Conclusion_ bag it is cannot be told._ India needs is a law to make land ownership fairer.It is not yet decided _ cash crop will be produced next year._ he said was right.PracticeWhoseWhatwhich/whatWhat/Whatever比较that/what1._ he wants is moey.主语从句 2._ he wants to go to Beijing is obvious.主语从句 3._ happened is not clear.主语从句4.This is the best book_ I bought.定语从句5.The first friend _ he made in China was Li Hua.定语从句Practicethat that 和和 what what 都可引导主语从句。但是，都可引导主语从句。但是，whatwhat除起除起连接作用外连接作用外，还在主，还在主语从句中语从句中充当成分充当成分，可做从句的主语、宾语、或表语，相当于，可做从句的主语、宾语、或表语，相当于the the thing(s)thatthing(s)that；而；而thatthat在主语从句中不充当任何成分，在主语从句中不充当任何成分，只起连接作用只起连接作用。WhatThatWhatthatthat为了使句子保持平衡，常用为了使句子保持平衡，常用it来代替主语从句，而把主语从句放到后来代替主语从句，而把主语从句放到后面，尤其是连词面，尤其是连词that引导的主语从句常用于此种句式中。引导的主语从句常用于此种句式中。常用句型如下：常用句型如下：It+be+名词名词+that 从句从句It+be+形容词形容词+that从句从句It+be+动词的过去分词动词的过去分词+that从句从句It+不及物动词不及物动词+that从句从句Study1.Its likely/possible/important/necessary/clear that 很可能很可能/重要的是重要的是/必要的是必要的是/很清楚很清楚2.Its known/reported/thought/said that 据据说说/据据报报道道3.It seems/appears/happens that 显显然、明然、明显显、碰巧、碰巧.4.Its been announced/declared that 已已经经通知通知/宣布宣布5.Its no wonder that难难怪怪/无疑无疑6.Its a pity/a fact/a common knowledge(众所周知）众所周知）/a common saying（俗（俗话说话说）thatStudy下列各句均有一处错误，请改正并分析原因。1.Light travels faster than sound is common knowledge.2.If shes coming or not doesnt matter much.3.That the professor said is of great importance.4.Where will the trees be planted has not been decided.5.When and where the meeting will be held still remain a question.Practice1、在Light前加That。that虽无词义但引导主语从句位于句首时不能省略。2、将If变为Whether。if,whether都可表示“是否”,但if不能引导位于主句之前的主语从句，它可以引导位于主句之后带有形式主语it的主语从句。3、将That改为What。that引导主语从句时无词义，只起一个连接的作用。What the professor said表示“教授所说的”，said后面还需要一个宾语，就只能用what。4、将will置于trees之后。主语从句要用陈述句语序。5、将remain变为remains。主语从句表示单一概念时，谓语要用单数形式。Practice10.不管你做什么都是正确的。11.会议什么时候举行以及在哪举行仍然是一个问题。12.他做的事情感动了每一个人。（move)13.她考试不及格让妈妈很生气。14.我们明天是否去野营取决于天气。15.我说什么与你无关。（none of your business)Production1.众所周知中国有着悠久的历史。2.什么导致这场事故是未知的。（cause this accident）3.你能否学好英语取决于你的努力。（depend on、effort)4.“我们为谁而学习”是个很重要的问题。5.恐龙为什么会灭绝仍然是个谜。（puzzle）6.吸烟有害健康是一件很明显的事情.7.老师课上讲的东西很重要。8.很遗憾他没来。9.你好像是正确的。Production