她问我是否把书还给图书馆了，我承认我还没有还。
Our teacher always tell us to believe inwhatwe do andwhowe are if we want to succeed.
我们的老师总是告诉我们，如果我们想成功的话，就要相信我们所做的事情以及我们自己。
易错警示
1．主语从句的引导词
连接词
that，whether，if
只起连接作用，不在从句中作成分
连接代词
what，who，whom，which，whichever，whatever，whoever
在从句中作主语、宾语、表语或定语
连接副词
when，where，how，why
在从句中作状语
Your support is important to our work.Whateveryou can do helps.
你的支持对我们的工作很重要。你能做的任何事情都会对我们有所帮助。
Howwe understand things has a lot to do with what we feel.
我们如何理解事情与我们所感受到的有很大关系。
WhereLi Bai，a great Chinese poet，was born is known to the public，but some won't accept it.
(2)It＋be＋名词(短语)(a pity/a shame/no wonder等)＋that从句
(3)It＋be＋过去分词(said/told/reported等)＋that从句
(4)It＋不及物动词(seem，appear，happen，matter等)＋that从句
It is uncertain whatside effect the medicine will bring about，although about two thousand patients have taken it.
(3)短语动词see to/ depend on/rely on＋it＋从句
(4)固定搭配take it for granted that/owe it to sb.that＋从句
No matter where he is，hemakes it a ruleto go for a walk before breakfast.
as if/as though意为“好像，仿佛”，引导的表语从句常跟在系动词(如seem，appear，look，taste，sound，feel，smell等)之后。若表语从句所述的是非真实的情句用陈述语气。
The thick smog covered the whole city.It wasas ifa great black blanket had been thrown over it.
李白，中国伟大的诗人，出生的地方人人皆知，但是有些人对此并不接受。
The limits of a person's intelligence，generally speaking，are fixed at birth，butwhetherhe reaches these limits will depend on his environment.
I don’t knowwhose pronunciation is the best.
连接词
that/whether
as if/
as though;
连接代词
what/ which
who/whose
whatever
whoever
whomever
whichever;
连接副词
Where/when
why/how
【答案】25. what
2020上海秋考
2020上海春考
The story also supports the idea (30) _________ the ball game was sometimes used for the purposes of divination.
【答案】30. that
通常来说，一个人智力上的极限从一出生就确定了，但他是否能够达到极限取决于他所处的环境。
易错警示
(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。
2．形式主语
it作形式主语的常见句型：
(1)It＋be＋形容词(necessary/likely/important/certain等)＋that从句
The factthat he lied again greatly surprised us.
Do you have anysuggestionwhere we get cheaper secondhand car?
You have noideahow worried we are.
考点一：宾语从句
【思维导图】
【知识梳理】
种类
作用
例句
关联词
宾语
从句
在复合句中做宾语，相当于名词，一般置谓语之后。
He asked mewhich team could win the game.
We hope（that）you will enjoy your trip.
Tell mewhy you don’t like school.
2．形式宾语
宾语一般放在及物动词或介词之后，但是，在下列情况下，须用it作形式宾语，而将真正的宾语(常为不定式/从句)后置。
(1)动词find/feel/think/consider/make＋it＋宾补(形容词或名词)＋不定式/从句
(2)动词hate/ like/ dislike/ appreciate/enjoy＋it＋从句
It is not yet decidedwho will do that job.
That she was chosenmade us very happy.
同位语从句
放在名词之后(news, problem, idea, suggestion, advice, thought, hope, fact等)表明其具体内容。
(1)that引导宾语从句时，常被省去，但下列情况下不能省略：①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；②宾语从句前有插入语时；③that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。
尽管大约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。
It doesn't matter whetheryou pay by cash or credit card in this store.
在这个商店里你用现金支付还是信用卡支付都没有关系。
易错警示
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。
无论他在哪里，他都定了一个规矩——早餐前散步。
I shallsee to it thathe is taken good care of when you are absent.
你不在的时候，我负责把他照顾好。
Ithinkit necessary that we take plenty of boiled water every day.
【答案】
2021上海秋考
This will allow you to see(29)________genres（类型）work for your group.
【答案】29. what
2021上海春考
Hun Hunahpús had his head cut off; a foretaste of (25) _________ would become common practice for players unfortunate enough to lose a game.
我认为我们每天多喝白开水是有必要的。
3．宾语从句的时态
一般情况下，宾语从句须与主句的时态保持一致，即当主句是一般现在时时，从句可根据具体情况选用合适的时态；当主句为过去的某种时态时，从句须用相应的过去的某种时态。当从句的内容为真理或客观事实时，须用一般现在时。
考点二：表语从句
1．表语从句的引导词
连接词
1．宾语从句的引导词
连接词
that，whether，if
只起连接作用，不在从句中作成分
连接代词
what，who，whom，which，whichever，whatever，whoever
在从句中作主语、宾语、表语或定语
连接副词
when，where，how，why
在从句中作状语
She asked mewhetherI had returned the books to the library，and I admitted that I hadn't.
From space，the earth looks blue.This isbecauseabout seventy one percent of its surface is covered by water.
从太空中看，地球是蓝色的。这是因为地球表面约百分之七十一都被水覆盖着。
考点三：主语从句
厚重的烟雾覆盖着整个城市，好像把一个厚厚的黑色的毯子扔到它的上面。
3．其他常考的表语从句
(1)This/ That/ It is why＋表语从句(表结果)“这/那就是……的原因”
(2)This/ That/ It is because＋表语从句(表原因)“这/那是因为……”