whom的用法定語從句
whom的用法定語從句：
whom主要用在當(dāng)先行詞表人的情況下，在從句中充當(dāng)動(dòng)詞或介詞的賓語。如：
The boy whom you met on the street just now is one of cousins.
He is the man from whom you ought to ask for help.
whom也可以用來引導(dǎo)非限定性定語從句。如：
The soldiers, some of whom come from Alaska, will be sent to Iraq next week.
英語定語從句的用法
�。ㄒ唬﹚hose
whose是所有格形式，所以在引導(dǎo)定語從句時(shí)，后面會(huì)緊跟一個(gè)名詞。其先行詞既可能是人，也可能是物。如：
The boy whose father is a professor studies very hard.
Are there any rooms whose windows face the sea?
whose也可以用來引導(dǎo)非限定性定語從句。如：
I decided to write about Chaplin, whose films are still very popular among a large audience.
（二）which的用法
which用來引導(dǎo)定語從句時(shí)，其先行詞都是表物的。如：
非限定性定語從句：He sent me five books, which helped me a lot in my English exam.
限定性定語從句：This is the ship which I travelled on two months ago.
第一句中的which helped me a lot in my Englsh exam作為five books的非限定性定語從句，補(bǔ)充說明了這五本書對我英語考試的幫助。
第二句中的which I travelled on two months ago作為the ship的限定性定語從句，特指這艘輪船是我兩個(gè)月前乘坐的那艘。
【注意】
1、當(dāng)which在從句中作賓語時(shí)，往往可以省略。比如上面的限定性定語從句中的which就可以省略，即：
This is the ship I travelled on two months ago.
但是，當(dāng)which前面有介詞時(shí)，就不能省略。比如上面這句話就可以改為：
This is the ship on which I travelled two months ago.
2、as與which的區(qū)別
as和which都可以用來引導(dǎo)定語從句，而且可以指代整個(gè)主句。但是，兩者在用法上存在一定差別。
1）兩者都可以在定語從句中做主語或者賓語，代表前面整個(gè)句子。如：
They love each other, as/which is natural.
He doesn't like it, as/which we can see.
2）as有“正如或正像”的意思，其引導(dǎo)的非限制性定語從句，位置可在句首、句末或句中。which引導(dǎo)的非限制性定語從句只能放在主句之后。如：
As is known to all, man cannot live without air. / Man cannot live without air, as is known to all. / Man, as is known to all, cannot live without air.
It is said that he can type 200 words within one minute, which I don't believe.
3）當(dāng)主從句是因果關(guān)系時(shí)，一般都用which。如：
He is always complaining about everyting, which annoys everyone around him.
4）如果先行詞中含有such或the same時(shí)，則用as。如：
He is not such a fool as he looks.
This is the same book as she lost yesterday.
需要注意的是：當(dāng)先行詞含有the same時(shí)，偶爾也用that來引導(dǎo)定語從句，這時(shí)與as引導(dǎo)的定語從句意思是不一樣的。如：
She wore the same dress that she wore at Mary's wedding. （她穿著她在Mary婚禮上穿過的一條裙子。）
She wore the same dress as her young sister wore. （她穿著和她妹妹所穿的`一樣的裙子。）
�。ㄈ﹚ho
who主要用在當(dāng)先行詞表人的情況下，一般在從句中充當(dāng)主語，但有時(shí)也可以作賓語，相當(dāng)于whom。如：
He's the man who bought these books just now.
The man who I served was wearing a hat.
第一句中的who在從句中作bought的主語，而第二句中的who則作served的賓語。
需要注意的是，當(dāng)介詞位于定語從句的句首時(shí)，就不能用who，而要用whom。如：
She is the girl about whom the man talked at the meeting an hour ago.
who也可以用來引導(dǎo)非限定性定語從句。如：
The manager, who comes from Japan, told me to help you with your project.
�。ㄋ模﹚hom
whom主要用在當(dāng)先行詞表人的情況下，在從句中充當(dāng)動(dòng)詞或介詞的賓語。如：
The boy whom you met on the street just now is one of cousins.
He is the man from whom you ought to ask for help.
whom也可以用來引導(dǎo)非限定性定語從句。如：
The soldiers, some of whom come from Alaska, will be sent to Iraq next week.
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