名词性从句 课件-高三英语一轮复习语法专题.pptx

名词性从句subordinate clause目 录/content01020304主语从句宾语从句表语从句同位语从句Point 1 主语从句Tip 1 引导主语从句的连接词从属连词that、whether、if；连接代词what、who、whom、whose、whatever、whichever、whoever等；连接副词when、where、why、how、whenever等。they were in truth sisters was clear from the facial similarity between them.从她们的面貌相似度就能明显地看出她们真是亲姐妹。（2019 全国)you need is a great teacher who lets you make mistakes.你需要的是一个让你犯错的好老师。【特别提醒】（1）that 引导主语从句时一般不省略。（2）当主语从句位于句首时，常用whether引导，而不用if。ThatWhatTip 2 it作形式主语的主语从句主语从句一般放在句首，但有时也可用it作形式主语，而将主语从句移到句子的末尾。常见的句型：（1）It+be+形容词（necessary/likely/important/uncertain等）+that从句（2）It+be+名词(短语)(a pity/no wonder/no surprise等)+that从句（3）It+be+过去分词(said/reported/decided/believed等)+that从句（4）It+不及物动词(seems/appears/happens等)+that从句(2020江苏)It is reported that the film is well received outside China.据报道，这部电影在国外很受欢迎。It is uncertain what side effect the medicine will bring about,although about two thousand patients have taken it.尽管大约有两千名患者已经服用了这种药,但是它会带来什么样的副作用还不清楚。Its no surprise our team has won the game.我们队获胜一点都不令人吃惊。thatTip 2 it作形式主语的主语从句It is decided that the meeting will be put off till next Monday.会议将被推迟到下周一，这已确定。【特别提醒】当it作形式主语，主语从句放在句末时，用if或whether引导均可，但如果被后置的主语从句中引导词后接or not时，只能用whether。Point 2 宾语从句Tip 1 引导宾语从句的连接词从属连词that、whether、if;连接代词what、who、whose、whatever、whichever、whoever等;连接副词when、where、why、how等。从句用陈述句语序。（2020 全国）She wondered if centuries of diving could have led to the evolution of physical characteristics that made the task easier for them.她想知道几个世纪的潜水是否会导致身体特征的进化，从而使潜水任务变得更容易。We promise attends the party a chance to have a photo taken with the movie star.我们许诺，任何参加这个聚会的人都有跟那个电影明星合影的机会。I came to believe I could do nothing about my weight.我开始相信我对我的体重无能为力。In order to make a change,you need to decide why its important.为了做出改变,你需要明确为什么它是重要的。whoeverthatTip 1 引导宾语从句的连接词【特别提醒】(1)that引导宾语从句时，常被省去，但下列情况下不省略:动词后跟有多个that引导的宾语从句时，只有第一个that可省略，其余的不可省略;宾语从句前有插入语时;that引导的从句位于句首时(2)一般情况下介词后只能用wh-类连接词引导宾语从句。介词后的宾语从句，连接词表示“是否”时，只用whether，不用if。Tip 2 it 作形式宾语的宾语从句(1)一些动词后的宾语从句有宾语补足语时，则需要用t作形式宾语，而将that引导的宾语从句后置。常见的这类动词有find、feel、think、consider、believe、guess、suppose、make等。He has made it clear the meeting will not be postponed.他清楚地表明会议不会被推迟。(2)动词hate、like、dislike、appreciate、enjoy等以及动词短语see to、depend on、rely on等后常用it作形式宾语，而将宾语从句后置。I shall see to it he is taken good care of when you are absent.你不在的时候，我会确保把他照顾好。thatthatPoint 3 表语从句Tip 1 引导表语从句的连接词从属连词that、whether;连接代词what、who、whose、whatever、whichever、whoever等;连接副词when、where、why、how等。从句用陈述句语序。（2020 全国）The good news is that its simple to learn and can be worth the effort.好消息是，(交流)学习起来很简单，值得付出努力。Id like to start my own businessthats Id do if I had the money.我愿意自己创业如果我有钱，那就是我将会做的事情。【特别提醒】if不能引导表语从句；that引导表语从句时不能省略。whatTip 2 as if/as though引导的表语从句as if/as though引导的表语从句常跟在be动词，以及seem、look、taste、sound、feel、appear等动词之后。The thick smog covered the whole city.It was a great black blanket had been thrown over it.浓雾笼罩着整座城市，这就好像一块巨大的黑色毯子被扔在城市上方。as ifTip 3 because、why引导的表语从句because、why也可引导表语从句，但because引导的表语从句主语不能是reason或cause(该结构常用that引导)。常用于以下句型:This/That is/was why 这/那是的原因This/That is/was because 这/那是因为 The reason why is/was that 的原因是 From space,the earth looks blue.This is about seventy one percent of its surface is covered by water.从太空中看，地球是蓝色的。这是因为地球表面大约71%被水覆盖。The reason why he didnt pass the exam was that he was too careless.他没有通过考试的原因是他太粗心了becausePoint 4 同位语从句同位语从句同位语从句在句中作某一名词的同位语，位于该名词之后，用以说明该名词的具体内容。常见同位语从句的名词:advice、vice、conclusion、doubt、fact、hope、idea、news、promise、question、suggestion、thought、truth、wish、word等。引导同位语从句的引导词:that、whether、how、where、when、why等。The manager put forward a suggestion that we should have an assistant.There is too much work to do.经理提出一个建议，我们应该有个助手，有太多的工作要做。This should serve as a warning people should be aware of their surroundings,especially when crossing roads.这应该作为一个警告，人们应该注意他们周围的环境，特别是在过马路的时候。that同位语从句【特别提醒】that引导同位语从句和定语从句的区别:that引导定语从句时，that既起引导词的作用，又在从句中充当句子成分；如果在从句中作宾语 that 可以省略，所修饰的名词指物时可用which替换。引导同位语从句时，that 在从句中不充当任何句子成分，不能省略。