我唔識中二的Adjectives Clause，請幫忙

除了用單詞或短語來形容名詞外，還可以用從句來形容，那些從句
稱為「形容詞從句」Adjective Clause；而被形容的名詞，稱為
「先行詞」Antecedent。

例如：

We need fearless men.﹝單詞形容 "men"﹞
We need men without fear.﹝短語形容 "men"﹞
We need men who are fearless. ﹝從句形容 "men"﹞
把形容詞從句附屬到主句身上的詞有三種：

(1) 關係代名詞 Relative Pronoun
(2) 關係形容詞 Relative Adjective
(3) 關係副詞 Relative Adverb
1. 關係代名詞 Relative Pronoun

有：(1) who﹝代人﹞；(2) whom﹝代人﹞；(3) which﹝代物﹞；
(4) that﹝代人或物﹞；(5) as﹝代人或物﹞

例如：

The two men who are in that house are my uncles.

* 關係代名詞 "who" 的身和數由先行詞 "men" 決定。

This is the man who showed me the way.
There is somebody who wants you on the telephone.
﹝有人想你接聽電話。﹞

* 在 "there is" 結構後面的形容詞從句，當主語的 "who" 可隱藏，即：
There is somebody wants you on the telephone.
The girl whom you saw is her sister-in-law.

* 當關係代名詞在形容詞從句中作賓語時，可隱藏，即：
The girl you saw is her sister-in-law.
Whom do you mean? 或 Who do you mean?

I know the man whom you mean. 或
I know the man who you mean.
﹝我認識你所意指的那個人。﹞

* 可隱藏 "whom" 或 "who"，即：I know the man you mean.

The woman for whom you wrote a letter yesterday is my aunt.
﹝你昨天替她寫信的婦人是我的伯母。﹞