在托福写作部分，高分作文有一个共同的特点就是会运用一些名词性从句和分词从句。从句的恰当使用能帮助考生提高写作质量。下面百利天下小编就结合视频为大家分享托福独立写作之名词性从句和分词从句的相关笔记。
分词从句
1.-ing从句-强调主动关系
A. -ing从句中不带主语，所谓不带主语，是指-ing分词分句的逻辑主语通常可以在特定的上下文或情景中判断。
One of my bod habits is biting nails
He denied having been there.
I have a friend living in London.
B. -ing从句带从属连词的ing分词分句的逻辑主语，通常也是主句的主语。
When sleeping, I never hear a thing.
He wrote his greatest novel while working as an ordinary seaman.
i. -ing分词分句作主语
Do you mind my/me making a suggestion.
My parents object to me /my going out alone.
ii. -ing分词分句作介词补足成分
Tm annoyed about Peter's/Peter forgetting to pay.
iii. -ing分词分句的语法功能
-ing分词分句可以做主语，宾语，主语补语和宾语补语。和动词不定式分句表达形式有时意义没有区别，有时意义略有不同。
I hate telling lies.我讨厌说谎(说谎的现象)。
I hate to tell.我讨厌说谎(这一次说谎)
C.分词分句可以做状语，表示多种意义。
You will make yourself more keeping on your feet.
It rained heavily, causing severe flood in that area.
The old man was fast asleep holding a book in his hand.
2.-ed从句-强调被动关系
不带主语和从属连词的分词分句：所谓不带主语是指-ed分词分句的逻辑主语通常可以由特定的上下判定。
带从属连词的-ed分词分句从属连词可以是when, though/although, as if/as though, if, if, once, unless, until等
This dictionary will look nice when printed.
If left alone on a desert island what would you do first?
A. -ed分词分句做后置修饰语通常泪当于一个缩略的定语从句。
The man, soaked with sweat from an all-night march, immediately went into action.
B. -ed分词分句做状语可表示多种意义。
United, we stand; divided we fall.
名词性从句
1.主语从句：在句子中担当主语的是一个从句,这个从句就叫做主语从句。通常放在主语谓语动词之前或由形式主语it代替，而本身放在句子末尾。引导主语从句只能用whether,不能用if.
That Peter should have married his cousin is not at all surprising.
What caused the fire is still the mystery.
How the book will sell dependents on its author.
2. 宾语从句：一个句子作动词或介词的宾语。宾语从句可甶连接词引导，连接词有：thot , what, who, when, why, where, which, if, whether, how ,等.
We never doubt that he is honest.
Can you tell us who is responsible for the fire.
3. 表语从句:用一个句子作为表语来说明主语是什么或者怎么样,甶名词、形容词或相当于名词或形容词的词或短语充当，和连接动词一起构成谓语。连接表语从句的连接词有：that, what, who, when, where, which, why, whether, how , whoever , whatever , whomever, whichever." 只能用whether,不能用if.
The fact is that he did not pass the test.
Mystery is whether he ever went there of oil.
The question is why he likes the place so much.
4. 同位语就是对与之同位的名词(名词词组)提供补充说明，起修饰和描绘的作用。当同位语部分是个句子，就是同位语从句。常用whether.
They had to face the fact that gas station is 30 miles away.
My original question, why he did it. has not been answered.
可以跟同位语从句的名词通常有news，Idea， fact, promise，question, doubt, thought, hope， message, suggestion, word, possibility.
以上就是托福独立写作之名词性从句和分词从句的详细内容，考生可以结合视频和笔记掌握英语用法的规则，提高写作质量，攻克托福写作。
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