定語從句的所有知識點

　　知識點：

　　定語從句在句中做定語，修飾一個名詞或代詞，有時也可以修飾部分或整個句子。

　　被修飾的名詞，片語或代詞即先行詞。定語從句通常出現在先行詞之後，由關係詞(關係代詞或關係副詞)引出。關係代詞和關係副詞放在先行詞和定語從句之間，起連線作用，同時又可做定語從句的一個成分。當關系代詞做賓語時可以省略。定語從句中的謂語動詞必須在人稱上和數量上和先行詞保持一致。定語從句分為限制性定語從句和非限制性定語從句。

　　1、I went to visit the American author who wrote a number of books about China.

　　2、I ate the soup my aunt prepared.

　　3、I have an arrangement with my bank, by which they let me use their money and repay them next month.　

　　4、He sent her a letter, in which he said that he was sorry for what he had done to her.　

　　5、Mr. Brown, who just came from Britain yesterday, will teach us accounting this term.　

　　6、She is going to spend the winter holidays in Hainan, where she has some relatives.　

　　7、The United States is known for its supermarkets, where huge quantities of all kinds of food and household articles are sold.

　　8、The story happened in late 19th century, when China is suffering from the invasion of western powers.

　　1、which引導的從句不能放在主句前，而as引導的從句則既可以放在主句前，也可以放在主句後。

　　2、用能做關係代詞，as和which都可以指代一個句子，但as有“正如”、“就像”之意，which則沒有此含義。

　　3、當從句的謂語動詞是be或相當於聯絡動詞的seem, become等時，可用as或which作主語。但當從句的謂語是行為動詞時，只能用which作主語。