霧裏灬探花
When he will come back is not sure .
When he will come back is still a question .
When he will come back is the day after tomorrow .
I want to know When he will come back .
I don`t know When he will come back .
The problem is When he will come back .
No one knows When he will come back .
When he will come back makes us worried ,
When he will come back is makes no different to us .
When he will come back is when we will be set free .
主語從名
when he will go home is known.
It is not known when he will go home.
賓語從句
I don't know when he will go home.
時間狀語從句
I saw him when he went home.
定語從句，修飾在主句中作狀語的時間。
I was reading a story yesterday afternoon when I heard the knocking on the door.
主語從句 when he will go home is known.
It is not known when he will go home.
When he will come back makes us worried.
It remains unknown when they are going to get married.
賓語從句 I don`t know When he will come back .
I want to know When he will come back .
That depends on when he shall come back.
表語從句 The problem is When he will come back.
What I am worried is when he will come back.
同位語 I have no idea when he will come back.
用名詞性從句完成下列句子
1我們應該製定一項計劃來應付目前嚴峻的形勢，這一點非常重要。
_We should___work out a plan to deal with the present serious situation_that/which is__very important.2老師告訴我們太陽從東方升起，在西方落下。
our teacher told us the sun_rises__in the east,and__falls _in the west3月球上有沒有生命是個有趣的問題__Whether no_life on the moon___is_an interesting question4如果您能在托福考試方麵給我一些指點，我會很感激的。
I will appreciate _if___you can give me some advice about the TOEFL
在一個句子中找名詞性從句
You've come to visit me.This is much fun.You've come to visit me, which is much fun.When should he leave home to live by himself?He hasn't decided about this yet.He hasn't decided yet about when he should leave home to live by himself.＂Do you want anything else before you die?＂The ghost asked the poor old man.The ghost asked the poor old man whrther he wanted anything else before he died.Why do some people find snails disgusting?The French cannot understand this.The French cannot understand Why some people find snails disgusting.His mother has recovered from her illness.This is a great relief to him.His mother has recovered from her illness that this is a great relief to him.
怎麼判斷一個句子是否是名詞性從句
【天馬行空外語團 小奇奇 為您解答】名詞性從句，顧名思義，是起名詞性作用的一個句子，這個句子可以作為一個整體來看待，其作用就是相當於一個名詞，在複合句中做主語、賓語、標語、同為語言，名詞性從句包括主語從句，表語從句，賓語從句和同位語從句四種.【主語從句】複合句中充當主語的從句，通常放在主句謂語動詞之前.【賓語從句】放在主句謂語動詞（構成動賓）、介詞（構成介賓）以及形容詞（形容詞賓語，常見接賓語的形容詞：sure、care）之後，做賓語.【表語從句】放在連係動詞的後麵，比如is、 am 、are、look、remain、seem【同位語從句】這個從句易和定語從句混在一起，同位語從句主要用途是對前麵的名詞作進一步的解釋，而定語從句則是對名詞加以限定修飾，在使用時注意這點. 常見接同位語從句的名詞：fact、message、suggestion、advice、belief、thought、doubt【不同觀點】樓上說看先行詞，這是不對的，因為先行詞這個詞隻有在定語從句中才會出現，名詞性從句裏怎麼會有這個詞呢.【不懂請繼續追問，小奇奇為您耐心解答】
為什麼說名詞性從句一定是個完整的句子？而定語從句一定不是完整的...
這種說法有一定的道理，但是實際上從句都必須是一個完整的句子。
名詞性從句的引導詞有三種，that, if/whether 和 特殊疑問詞。
前兩者在從句中不做成分，但是 特殊疑問詞 則必須在從句中充當成分，以使從句完整。
而定語從句也必須完整，隻是它的某個成分由關係詞充當而且一般移到從句句首了。
下麵一句話,哪些部分用到了名詞性從句。
定語從句是形容詞性從句，是用來修飾句子的，即在句中做定語，修飾一個名詞或代詞，被修飾的名詞，詞組或代詞即先行詞.定語從句通常出現在先行詞之後，由關係詞（關係代詞或關係副詞）引出.舉個例子：He is the man (whom/ that I saw yesterday). 他就是我昨天見的那個人.（whom/that在從句中作賓語.括號內容是用來修飾the man.，即相當於一個形容詞.而名詞性從句分為主語從句、賓語從句、表語從句和同位語從句，下麵簡單舉例eg:(Who will win the match) is still unknown.由who引導主語從句，作主語She will give (whoever needs help a warm support)由whoever引導賓語從句，作句子賓語That is (why he didn't come to the meeting)由why引導表語從句，在句子中作表語I have no idea (when he will come back home.)由when引導同位語從句，在句子中作同位語，對idea作具體解釋.
把下列兩個句子合成一個含有名詞性從句的複合句
3.Many parents think that teenagers should not spend too much time online.4.There is no scientific evidence for the idea that time travel is possible.5.The suggestion that Chinese students should be given more free time is welcomed by many people,especially kids in school.好久沒用英文了，也不清楚對不對，你將就著用用吧，⊙﹏⊙b
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