- 用來引導關係子句修飾名詞(後位修飾),被修飾的名詞稱為「先行詞」,而關係子句又稱為形容詞子句。不同種類的先行詞須用不同的關係代名詞,文法:N + 關係代名詞 + 子句。
- who:先行詞是「人」,如:
- The girl who is talking on the phone is my sister. (那個正在講電話的女孩是我姐姐。)
- which:先行詞是「事物」,如:
- The story which is told by my grandpa is very interesting. (我爺爺說的那個故事很有趣。)
- that:
- 1、一般狀況下取代 who / which,如:
- Is he the boy that you are talking about? (他就是你們在談論的男孩嗎?)
- 2、先行詞同時包含人和人以外的事物,如:
- The man and his dog that are crossing the street helped the police catch the thief the other day. (正要過街的那個男人和他的狗前幾天幫警方抓到了小偷。)
- 3、先行詞(事物)前面有最高級形容詞 / 序數 / the only / the very / every / all 等形容詞,如:
- This is the most wonderful gif t that I’ve ever received. (這是我收到過最棒的禮物。)
- 4、句中有疑問詞 who / which 時,避免重複,如:
- Who is the pretty girl that your brother danced with at the party? (與你哥哥在派對上共舞的漂亮女孩是誰?)
- 下圖為:關係代名詞的格。

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關係代名詞
影片試看 - 關係代名詞