定語從句只能用who
定語 從句由關係詞（關係代詞、關係副詞）引導，關係代詞、關係副詞位於定語從句句首。
在以下六種情況下多用who ：
①關係代詞在從句中做主語
A friend who helps you in time of need is a real friend .
②先行詞為those ,people 時
Those who were either fools or unfit for their offices could not see the cloth .
③先行詞為all,anyone ,ones ,one 指人時
One who doesn’t work hard will never succeed in his work .
④在There be句型中
There is a stranger who wants to see you .
⑤在被分隔的定語從句中
A new teacher will come tomorrow who will teach you German .
⑥在有兩個定語從句的句子中,其一用who,其二用that,但若先行詞後接兩個以上的並列定語從句時,後一個必須重複前一個關係代詞.
The student who was praised at the meeting is the monitor that is very modest and studies very hard .
There is a teacher who is always ready to help others and who enjoys what he does .
這是我在高中的時候做的筆記,希望對你有用.
定語從句中whose的用法
一、whose為who的所有格，作“某(些)人的……”解，它所指代的先行詞必須是人，其引導的定語從句修飾它的先行詞，同時它本身在從句中作定語。
This is the little girl whose parents were killed in thegreat earthquake.這就是在那次大地震中失去雙親的那個小姑娘。
Mr Liu wants to talk to the students whose homework hasn't been handed in.劉老師要跟那些沒交家庭作業的'學生談話。
二、whose也可作which的所有格，作“某(些)物的……”解，它所指代的先行詞必須是物，其語法的功能同上。
The company whose name was Notco was in Australia.那個名叫諾特可的公司設在澳大利亞。
We live in a house whose windows open to the south.我們居住在一所窗户朝南開的房子裏。
三、whose可修飾定語從句中的主語、賓語、介詞賓語等不同成分。
Mr King，whose legs were badly hurt，was quickly taken to hospital.金先生的腿受了重傷，很快就被送往醫院。(whose修飾定語從句中的主語legs)
We shall have to make a decision about Ms King，whose story I've just told you.關於金女士的情況，我剛才已經告訴你們了，我們得對她的事情作出決定。(whose修飾定語從句中的賓語 story)
四、whose既可引導限制性定語從句，亦可引導非限制性定語從句。
The boss in whose department Mr King worked called at the hospital.金先生工作單位的老闆到醫院來探視。(限制性定語從句)
The boss of the company，whose name was Mr Little，told the story.公司的老闆叫利特爾，他講述了這個故事。(非限制性定語從句)
五、由於whose具有兼作who和 which的所有格的雙重功能，故在指人時可用of whom代替whose，指物時可用of which代替whose。
This kind of book is for children whose native language(=the native language of whom)is Chinese.這種書是給母語是漢語的兒童看的。
Mr Brown has written a novel whose name(=the name of which)I've completely forgotten.布朗先生寫了部小説，其書名我完全忘了。
I live in a room whose window(=the window of which)opens to the south. 我住在一間窗户朝南開的屋子裏。
六、按英語習慣用法，下列情況中的whose和of whom或of which切不可混用：
1.凡是of whom或of which同數詞或代詞(如some，many，little等)連用表示部分與整體關係時，通常不可用 whose。
There are 45 students in our class，35of whom are League members.我們班有45名學生，其中35名是團員。
Mr White wrote many articles，some of which were translated into Chinese.懷特先生寫了不少文章，其中一些譯成了中文。
2.凡是of whom或of which修飾定語從句中的主語，是表示同位關係的代詞both，all等時，切不可用whose。
I have two sons，both of whom serve in the army.我有兩個兒子，都在部隊服役。
He has some novels，all of which are written in Russian.他有一些小説，都是用俄文寫的。
