2026届高考英语一轮总复习语法悟通专题突破专题3三大从句和特殊句式第3讲名词性从句课件

这是一份2026届高考英语一轮总复习语法悟通专题突破专题3三大从句和特殊句式第3讲名词性从句课件，共29页。PPT课件主要包含了第三讲　名词性从句， 主语，同位语 ，宾语 ， That ，that ，whether， that ，What，whoever等内容，欢迎下载使用。
考点突破 · 精讲即练
情景导入What① wrries my classmate，Mary，a lt these days is that② she is putting n weight quickly and thus falls ill frequently.She has sme dubts whether③ she eats t much fast fd high in fat r sugar.Als，with the Cllege Entrance Examinatin appraching，she becmes mre stressful and she can't sleep well these days.Maybe this explains that④ she has becme fatter these days，she thinks.
用法感悟①What引导_____从句，并在从句中作_____。②that引导_____从句，在从句中不作成分，不能省略。③whether引导______从句，意为“是否”，在从句中不作成分，不能省略。④that引导_____从句，在从句中不作成分，可以省略。
名词性从句是在句子中起名词作用的句子，它的功能相当于名词(短语)，在复合句中可作主语、宾语、表语、同位语等，因此名词性从句又可分为主语从句、宾语从句、表语从句和同位语从句。名词性从句的引导词及其用法如下：
考点一　连接词that与whether/if一、连接词that的用法1．that在名词性从句中不作任何句子成分，引导宾语从句时有时可以省略，引导主语从句、表语从句和同位语从句时不能省略。I lve the fact that Chinese buses, mtrcycles, trains and aircraft are either ecnmical r cheap.我喜欢中国的公共汽车、摩托车、火车和飞机，既经济又便宜。
【点津】that引导宾语从句时几种不能省略的情况：①that从句作介词的宾语时；②动词后跟有多个that引导的宾语从句时，只有第一个that可以省略，从第二个从句开始that不可省略；③宾语从句前有插入语时；④that引导的宾语从句位于句首时。
2．that引导主语从句时，常用it作形式主语的常用句型有：(1)It＋be＋形容词(necessary, right, likely, unlikely, wrng, imprtant, certain等)＋that从句It is unlikely that I shuld accept such an ffer as that.我不可能接受那样的提议。(2)It＋be＋名词(短语)(a pity, a shame, a surprise, n wnder等)＋that从句It is a pity that yur cmpsitin has s many spelling mistakes.很可惜，你的作文有这么多的拼写错误。
(3)It＋be＋过去分词(said, reprted, decided等)＋that从句It is decided that the meeting has been put ff till next Mnday.已决定会议推迟到下周一举行。(4)It＋特殊动词(短语)(seems, appears, happens, matters, turns ut, makes n difference 等)＋that从句It turns ut that the brain needs exercise in much the same way ur muscles d.结果表明，大脑像肌肉一样都需要锻炼。
【点津】在以下主语从句中，常使用虚拟语气，即谓语动词用“shuld＋动词原形”形式，其中的shuld可以省略。①It is a pity＋that ...②It is necessary/strange/imprtant/natural ...＋that ...③It is suggested/requested/required/prpsed/desired...＋that...
3．it作形式宾语的宾语从句(1)find, feel, think, cnsider, make, believe 等的宾语后有宾语补足语时，需用it作形式宾语而将that引导的宾语从句后置。He has made it clear that the meeting will nt be pstpned.他清楚地表明会议不会被推迟。(2)一些动词短语see t, depend n, rely n 等常用it作形式宾语，而将宾语从句后置。I shall see t it that he is taken gd care f when yu are absent.你不在的时候，我保证照顾好他。
二、连接词whether与if引导的名词性从句1．引导主语从句(if引导主语只能放在句尾，前面要用it作形式主语。)、表语从句、同位语从句时一般用whether。2．whether与if引导宾语从句时大多数情况下可以互换，但下列情况下宜用whether：①后面直接跟r nt时；②用于介词后引导宾语从句时。
【点津】dubt后接从句时，如果用于肯定句，从句的引导词用whether或if；用于否定句或疑问句时，从句的引导词常用that。The dctr really dubts whether/if my mther will recver frm the serius disease sn.医生真的怀疑我母亲是否能很快从重病中康复。
即时演练(一)单句语法填空1．_______ peple in Lndn speak fast and use unfamiliar wrds made Xie Lei cnfused at first.2．Dick enjys painting but he knws the fact _______ he desn't have what it takes t be a prfessinal.3．His capability has never been in dubt; the questin is __________ he is prepared t put effrts.
4．Smetimes, I really dubt _____________ there is lve between my parents.They quarrel n a regular basis.5．It is reprted _______ we must be cautius abut earthquakes nwadays.
whether/if
考点二　连接代词一、what的用法what可引导主语从句、宾语从句、表语从句和同位语从句，在从句中作主语、表语、宾语或定语等。what引导名词性从句时有两个意思：一是表示“什么”，带有疑问意味；二是表示“……的东西或事情”，相当于一个先行词后接一个关系代词。
Our teachers always tell us t believe in what we d and wh we are if we want t succeed.我们的老师总是告诉我们，如果我们想要成功，要相信我们所做的事情和我们自己。
二、whatever，whever, whmever，whichever与what, wh, whm, which的区别
What wrries us mst is wh let ut the secret.最令我们担忧的是谁泄漏了秘密。Whever breaks the law shuld be punished.任何触犯法律的人都应该受到惩罚。
即时演练(二)单句语法填空1．_______ she culdn't understand was why fewer and fewer students shwed interest in her lessns.2．We wrte a letter f thanks t __________had helped us.3．The prblem is ______ shuld be sent t help them ut.
4．I'm in a puzzle abut ________ is the right answer t the questin.5．Libraries have evlved as the public's needs have changed. In fact, if yu haven't visited yur lcal public library fr a while, yu may be surprised at _______ it nw has t ffer.
考点三　连接副词引导名词性从句的连接副词有when，where，why，hw等，它们均在从句中作状语。I have n idea when she will be back.我不知道她何时回来。I've been thinking abut hw we can make the newspaper mre interesting.我一直考虑我们如何能使报纸更有趣。That's why I want yu t wrk there.那就是我要你在那儿工作的原因。
即时演练(三)单句语法填空1．What puzzles Mike's friends is ______ he refused an ffer frm Yale university yesterday.2．What sme teenagers dn't realize is ______ difficult life can be after they get addicted t drugs.
3．It is the ability t d the jb that matters, nt ________ yu cme frm r what yu are.4．Getting up early als relieves stress and tensin because it gives yu the time t squeeze in a wrkut befre yu get distracted (分神). This is ______ mrning peple tend t be healthier and happier.
【例1】　The student cmpleted this experiment t make what Prfessr Jseph had said cme true.分析：句意：这个学生完成这个实验是为了使约瑟夫教授所说的成为现实。make sth. cme true让某事成为现实。设空处引导宾语从句，并在从句中作had said的宾语，应用连接代词what。故填what。