备考2024届高考英语一轮复习考点通关第二部分学透语法突破句法篇专题五三大从句考点二名词性从句
展开What matters t a museum is nt hw many visitrs it has, but hw clse it is t peple’s daily lives.
[北京高考,26]Jane mved aimlessly dwn the tree-lined street, nt knwing where she was heading.
Pick yurself up! Curage is ding what yu are afraid t d.
Unfrtunately, I missed this event fr the reasn that I had t visit my grandma.
点拨
学生看到reasn,易错填why,但在该句中,空后内容"I had t visit my grandma"是解释reasn的内容,所以空处引导同位语从句,应填that。
[江苏高考,21]By bat is the nly way t get here, which is hw we arrived.
Whether their wedding ceremny will be held in the pen air tmrrw depends n the weather.
We’ve gt a cuple f participants in the team. The prblem is wh can cmplete this challenging task.
二、主语从句
1.从句作主语时,主句谓语动词一般用单数。
What she ffers t her classmates is (be) hnesty and happiness.
2.it作形式主语:
It is pssible that caffeine may cause birth defects(缺陷) in humans, t.
It is a pity that we lst such an imprtant custmer.
It is believed that the insects have spread t Eurpe befre crssing ver t sub-Saharan Africa.
It desn’t matter whether yu g t the Great Wall r the Palace Museum — we have enugh time t explre this amazing city.
三、宾语从句
1.it作形式宾语:
find/feel/think/believe/cnsider/make/...+it+宾补+that从句hate/like/...+it+that从句dependn/relyn/seet/...+it+that从句takeitfrgranted+that从句
I think it necessary that we drink plenty f biled water every day.
I shall see t it that he is taken gd care f when yu are absent.
2.表示情感或态度的形容词后可接宾语从句,如cnfident, cnvinced, surprised, anxius等。
I was surprised that she shuld thrw away the necklace frm her byfriend.
3.一般情况下介词后只能接wh-类连接词引导的宾语从句。
[江苏高考,26]We chse this htel because the price fr a night here is dwn t $20, half f what it used t charge.
四、表语从句
1.as if/as thugh。as if/as thugh意为"好像,仿佛",其引导的表语从句常位于系动词之后,从句有时用虚拟语气。
I felt as if we had knwn (knw) each ther fr years.
2.because/why。常用于以下句式中:
This/Thatiswhy... 这/那就是……的原因。This/That/Itisbecause...这/那是因为……Thereasn why... is that... ……的原因是……
Unlike rdinary paper-making where trees need t be cut dwn, Dai paper is envirnmentally friendly. This is because its raw material is the recyclable bark f a kind f trees unique t the area.
五、同位语从句
同位语从句前的名词通常是表示抽象意义的名词:fact, news, idea, truth, hpe, prblem, infrmatin, belief, thught, dubt, suggestin, questin等。同位语从句用于对这些名词作进一步的解释或说明。
I have sent Miss Green an invitatin t ur party, but I have n idea whether she will accept it.
Husewarming parties get their name frm the fact that a lng time ag peple wuld actually bring firewd t a new hme as a gift.
六、易混连接词
1.that/what
Cntrary t what many peple think, HIV cannt be transmitted thrugh msquites, cughs r sneezes.
Dn’t be sad. The mst imprtant thing is that we must learn frm ur mistakes and mve n.
2.whether/if
二者在动词后引导宾语从句时,通常可互换,但在下列情况下,只用whether:
It remains t be seen whether r nt this idea can be put int practice.
[天津高考,4]She asked me whether/if I had returned the bks t the library, and I admitted that I hadn’t.
1. What makes the Harbin Internatinal Ice and Snw Festival special is the scale f the sculptures and the beautiful lighting.
2.After cnsidering carefully where I culd find my first ideal jb, I chse China.
3.The news spread quickly all ver the wrld that Michael Schumacher revived after being seriusly injured fr 5 years.
4.Nw the rute is n lnger used fr internatinal trade but much histry and many stries f what happened n the ancient rad remain.
5. Whever passes here wuld stp t admire the scenery.
6.It was expected that ver 100,000 peple will take part in the massive parade in Tian’anmen Square n the mrning f Oct. 1.
7.The Green Revlutin is a gd example f hw technlgical advances can have a great effect n ecnmic develpment.
8.He did nt see the film last night. That is because he had t help his little sister with her hmewrk.
9.Eat whichever cake yu like and leave the ther fr wh/whever cmes late.
10.Nwadays, mre and mre parents are discussing whether/if mre freedm and encuragement shuld be prvided fr their children.
11.Nwadays cnsumers becme mre and mre practical and nly buy what they need.
12.The syrup(糖浆) finally turns int a slid cating, like the crystal n the surface f haws(山楂果). That is why they are als called bingtanghulu.
13.It desn’t matter when yu cme — the stre stays pen 24 hurs a day.
14.Mary tk it fr granted that they wuld apprve f the idea.
15.D nt let any failures discurage yu in yur daily life, fr yu never knw hw clse yu may be t victry.
连
接
词
that
1.在从句中不作成分,也无词义;
2.引导宾语从句时可省略;引导主语从句、表语从句、同位语从句时,不可省略。
if
主要引导宾语从句,有时引导主语从句
whether
引导主语从句、宾语从句、表语从句、同位语从句
as if/
as thugh
引导表语从句
because
引导表语从句
连接
代词
wh(ever),
whm(ever),
what(ever),
which(ever),
whse
引导主语从句、宾语从句、表语从句、同位语从句
连接
副词
when, where,
why, hw
引导主语从句、宾语从句、表语从句、同位语从句
句型
句型中常用的词或词组
It+be+形容词+从句
clear, certain, bvius, imprtant, likely, necessary, pssible等
It+be+名词(词组)+从句
a shame, a pity, an hnur, n wnder, gd news等
It+be+过去分词+从句
said, reprted, thught, knwn,believed, expected, cncluded等
It+特殊动词(短语)+从句
desn’t matter, ccurs t sb., makes n difference等
在从句中充当成分
含义
that
不充当成分
无含义
what
充当主语、宾语、表语、定语
意为"什么,……的事情,什么样的"
特殊情况
例句
与r nt直接连用时
I dn’t knw whether r nt they will cme. 我不知道他们是否会来。
作介词的宾语时
Everything depends n whether we have enugh mney. 一切都取决于我们是否有足够的钱。
引导主语从句且从句位于句首时
Whether the sprts meeting will be held n time depends n the weather. 运动会是否会按时举行取决于天气。
引导同位语从句时
I have n idea whether he is willing t help us. 我不知道他是否愿意帮我们。
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