whose 是定語從句中一個常用的關係代詞， 它是關係代詞who的所有格，在從句中作定語，也就是說當先行詞與從句中某個名詞有所屬關係，表達「……的」意思時，用關係代詞whose 引導定語從句，它既可以指代人，也可以指代物，既可引導限制性定語從句，也可以引導非限制性定語從句。
例：①Mr King,whose legs were badly hurt, was taken to the hospital. 金先生腿受重傷，被送進了醫院。
②They lives in a room whose window opens to the south. 他們住在一間窗戶朝南開的房間裡。
whose短語在定語從句中有時可作介詞賓語， 即構成「介詞＋whose＋名詞」引導定語從句並在從句中作狀語。
例：①The boss in whose department Mr King worked had heard about the accident. 金先生工作所在的部門領導已經聽人說過這一意外事故。
②He is the student of whose brother we are always proud. 他就是那個我們總是為他哥哥感到驕傲的學生。
whose引導定語從句時,通常可與of which/of whom引導的定語從句進行轉換。
例：①I made a table,the surface of which(of which the surface)is quite smooth. 我制了張桌子，桌面很光滑。
I made a table, whose surface is quite smooth.
②I live in a room whose window(the window of which或of which the window)opens to the south. 我住在一間窗戶朝南開的屋子裡。
③The professor of whom a daughter(a daughter of whom) has gone abroad is very famous in China. 那位他的女兒已經出國了的教授在國內很有名。
二 、語法句型1 、不定式作目的狀語
不定式具有副詞的特徵，在句中可以作目的狀語，修飾謂語動詞，表示動作或狀態的目的。
例：He came to see me last Sunday. 他上星期天來看過我。
為了強調目的狀語，可以用in order to＋動詞原形，甚至可以將in order to短語提到句首。
例：①I had to lie to the company and pretend to be a man in order to get a job. 為了得到工作，我不得不對公司撒謊，並裝扮成男人。
②In order to catch the train, I』ll get up very early tomorrow morning. 為了趕火車，我明天將很早起床。
此外還可以用so as to短語來作目的狀語，但so as to不能置於句首。
例：She lied to us because she had to so as to( in order to) get a job. 她對我們撒謊，那是因為為了得到工作，她不得不這麼做。
2 、一般現在時在條件狀語從句中的用法
條件狀語從句中，當謂語動詞是將來某個時間發生的動作或狀態時，通常要用一般現在時態來表示。
例：①Unless you tell me ,I shall not be able to help you. 除非你告訴我，否則我無法幫助你。
②If anyone at work discovers my secret, I shall lose my job. 公司裡任何人知道了我的秘密，我都將失業。
3 、形容詞在句中作賓補
有些及物動詞，除了跟賓語外，還須加上一個詞或短語來說明賓語的狀態，以補充其意義上的不足，這樣的詞或短語叫做賓語補足語，它與賓語之間有主謂關係，通常形容詞在句中可作賓語補足語。
例：①So I cut my hair short. 於是我把頭髮剪短了。
②They washed their clothes very clean. 他們將衣服洗得乾乾淨淨。
除形容詞外，副詞、介詞短語、動詞不定式，分詞等均可作賓補。
例：①Will you please bring him in ? 請把他帶進來好嗎？
②We elected him monitor of our class. 我們選他當班長。
4 、It seems that/as if...
本句型實際上是「主＋系＋表」結構，其中it是無人稱代詞，本身並無詞意，也並非形式主語，seems為系動詞，that/as if...引導表語從句，本句型使that/as if引導的從句所表達的意思變得不大肯定或者使語氣變得較為委婉。
例：①It seems that it is more difficult for women to get to the top of the company. 婦女似乎更難提升到公司的最高職位。
②It seems to me that he has known everything.
(He seems to have known everything) 看來他似乎什麼事都知道了。
③It seems as if it is going to rain.
(It seems to rain) 看來天要下雨了。
It seems(that...)常可以用I guess that...來替換。
例：①I guess men’s hands and fingers are too big !
It seems that men’s hands and fingers are too big. 男人的手和手指似乎太大了。
②It seems that she told a lie in order to get a job in our company.
I guess she told a lie in order to get a job in our company. 看來她為了想在我們公司找一份工作，向我們撒了謊。
5、 have sb./sth. doing sth.
此句型中，have為使役動詞，分詞短語在句中作賓語補足語，與賓語之間是主動關係，意為「使某人(某物)做某事」，強調動作的持續性。
例：①We have never had women working in this part of our company before. 我們以前從來沒有讓女人在我們公司的這個部門工作。
②They had their lights burning all night long. 他們通宵把燈點著。
如果只強調讓某人、某物做某事而不強調動作的持續性時，我們可用省「to」的不定式在句中作賓語補足語。
例：I won’t have you do such things. 我不讓你去做這些事。
當使役動詞have後接過去分詞短語，作賓語補足語時，賓語則與補足語之間是被動關係，即have sth. done句型， 此句型有兩種含義。
其一：表示「使得某事得以做成」或「(請人)把某事做完」。
例：①I』ll have my bicycle repaired. 我將把自行車推去修好。
②I had my hair cut yesterday. 我昨天去理了發。
其二：表示「遭遇某種情況」或「經歷一個事情或行動」。
例：①King Charlies I had his head cut off. 國王查理一世被砍了頭。
②She had her wallet stolen yesterday. 昨天她的錢包被偷了。
6、 Does it matter...
此句型中，it為無人稱代詞，作主語，matter是動詞，意思是「關係重要」，主要用於否定句，疑問句和條件狀語從句中。
例：①Does it matter if an engineer is a man or a woman? 工程師是男是女，這有什麼關係呢？
②What does it matter? 這有什麼關係？
③It doesn’t matter, does it ? 這沒多大關係，是嗎？
④It doesn’t matter to me what you do or how you do it. 你做什麼，怎麼做對我都無關緊要。