、WHO WHOM 是怎么用的 ( ) 2.— Do you know ________?— Yes,I do.A.wh

who 可以代替whom whom不能代替who
作介词宾语时 只能用wnom 不能用who 但介词不提前 在句尾 关系代词仍可用 who代替whom
如 he is the man who/whom/that/不填 you are waiting for.
he is the man who/that is waiting for you.

1,who
2,which
3.whom/who
4.who
5.which

who,whom在从句中分别作主语和宾语,指人,其中 who可以替换whom,但是介词后面一定要用whom,whom是who的宾格形式,用作疑问代词 .
例I want to know whom/who you are waiting for?
I want to know for whom you are waiting?
Mrs Read is the person to whom you should write．

this is the girl who is your favorite.
this is the girl whom you like best.

who whom 都指代人.who 可作定语从句的主语和宾语,whom只作宾语.
作宾语时who/ whom都可以省略 .
当关系代词前有介词时,用介词+Whom 结构.如
He is the boy who came to our class yesterday
He is the boy (who / whom) I helped yesterday
He has a sister of whom he is proud
who whom 都指代人.who 可作定语从句的主语和宾语,whom只作宾语.
作宾语时who/ whom都可以省略 .
当关系代词前有介词时,用介词+Whom 结构.如
He is the boy who came to our class yesterday
He is the boy (who / whom) I helped yesterday
He has a sister of whom he is proud

1.who,因为后面只一个 talking,不完整
2.whom,后面是talking with,with是介词要加宾语,whom可做宾语,这是个定语从句,陈述句的表达为：You mother is talking with the young lady,who 代the young lady

1.whom指人,在从句中作宾语,可省略.e.g.Do you know the man (whom) we saw at the Beijing Hotel?也可以用that ,可以省略.2.which 指物,在句中作主语或宾语,作宾语时可以省略.e.g.I’m not interested in the book which （that）has just been published.3.that指人或物,在从句中做主语或宾语,作宾语时可以省略.The house that （which）I’m going to buy faces south.在限制性定语从句里,如果先行词是物,which和that的用法基本上是一样的,作宾语时,都可以省略,作主语则保留.但是,在非限制性定语从句里,只能用 which 不能用that.只能用that不能用which的情况：先行词前有下列词语修饰时,定语从句必须用 that 引导.all,every,any,little,few,much,no,only,very,the + 序数词,the + 形容词最高级 eg.This is the cleanest park that you can imagine.eg.This is the only book that has been written in French.*在 who 或 which 引导的特殊疑问句中,限制性定语从句必须用 that 引导.eg.Who is the man that is standing over there.* 先行词在从句中作表语时,限制性定语从句通常用 that 引导.(常可省略) eg.She is no longer the girl that she was before she went to the country.

B who引导的定语从句,在从句里做主语的成分.而whom是做宾语的,whose意思是"谁的"表物主,who's=who is.一个句子不可以出现两个谓语"is".所以选B

这个空可以填who/whom/-.
who在定语从句中,它所修饰的先行词是人的名词,并且在从句中作主语.在非正式的情况下有时也可以作宾语.
whom在定语从句中,它所修饰的先行词是表示物的名词,并且在从句中作宾语.
在下面的情况下只能用whom,不能用who：
如果和介词一起,放在定语从句的句首时：
如：Mrs Read is the person_to whom___you should write .

1,从句的本质就是用一个句子来代替一个词.比如名词性从句就是用来当名词的.那名词有哪些作用呢?名词可以当主语,同位语,表语所以才有了什么主语从句之类的.
2.从句性质主句决定,比如一个句子缺了主语那就选择名词从句,如果缺了定语（形容词）就用形容词从句.
3,连接词由从句绝定,从句再怎么样都是一个句子,所以连接词就要根据从句来确定,看从句是缺意思还是缺成分,至于各种连接词有什么作用就靠你自己查阅了.
4,有主句才有从句.要选择从句就要先分析主句的成分.这个就要靠练习了.
PS：1定语从句（形容词从句）最好的方法就是带入法,因为它的作用是形容词就是说一定要有个名词来修饰所以把从句修饰的词带入从句,那个词在从句中做什么成分或表达什么意思就是连接词表达的成分和意思.
2一般来说确定了名词从句答案就是what,除了同位语从句,还有我记得有一次的高考用的which是因为从句的意思是问两个队哪个队可以获胜,这就是有选择性所以用WHICH这也就解释了为什么定语从句不用what,因为定语从句是给定的名词是有选择性的.
3,同位语的判断,主句完整,从句完整,而且有个抽象名词需要解释（比如消息,时间这类你不解释别人无法明白内容的词）就选择that!只有一种特殊的就是I HAVE NO IDEA（我不知道）这个就当成一般的名词从句做,如果一般考试考到了就不要选择that因为那是考官用于迷惑你上当的!
祝你在英语上取得好的成绩

其实这些问题在一本好的英语语法书中都有讲解,而且更全面,还是建议你买一本语法书,阅读定语从句这一章节.
在这里我通俗的讲解一下.
定语就是修饰语,比如说蓝蓝的天,白白的云,这里的“蓝蓝的”和“白白的”就是定语
英语也是一样的,不过中西方文化是有差异的,他们喜欢将定语后置,然后插入一个连接词who,whom,which,that
eg：The boy who loodks handsome is my brother.那个看起来帅气的男孩是我的哥哥.who前面有一个词,叫做先行词,这里的先行词是人所以用who来引导
这里的先行词是主语,如果要是宾语的话,就用whom
eg：The boy whom you talked has gone home.talked 的对象是the boy,也就是说the boy是宾语,那么就要whom如果是物就用which,或that.但是也有需要注意的,语法书都会有该注意哪些要点的.

who 为正确选项
选whom 或who,关键要看它们要在从句里充当的成分.若要做主语,则是who,若是宾语则是whom.对本题而言,从句“*** is sitting behind Nancy”谓语,宾语具备,可主语却虚缺着.

Who可以作主语也可以做宾语。Whom只能作宾语。理解了没。

who whom 是关系代词,什么时候用who ,什么时候用whom ,是由先行词在句子中充当的什么成分决定的,如果是宾语就用whom,是宾语或者主语时就用who.
the number of people who lost homes reached as mang as 250.000.此句中,先行词pepole,在句子中充当的是主语,所以用who ,当然也可以用that.
where is the man whom i saw this morning?此句中先行词the man ,在句子中充当的是宾语,就用whom ,当然也可以省略.

都对啊
口语中who可以代替whom
who主格 whom 宾格

中文,谁相思
满意请采纳

在动词和系动词后面的一般是宾格
在之前的是主格!
I don‘t know who is my right man!
I don‘t know whom I can meet!
主要看who或者whom在句中代替的部分!
in which 或者where