18.1 關(guān)系代詞引導(dǎo)的定語(yǔ)從句
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  關(guān)系代詞所代替的先行詞是人或物的名詞或代詞,并在句中充當(dāng)主語(yǔ)、賓語(yǔ)、定語(yǔ)等成分。關(guān)系代詞在定語(yǔ)從句中作主語(yǔ)時(shí),從句謂語(yǔ)動(dòng)詞的人稱和數(shù)要和先行詞保持一致。
1)who, whom, that
  這些詞代替的先行詞是人的名詞或代詞,在從句中所起作用如下:
  Is he the man who/that wants to see you?
他就是想見(jiàn)你的人嗎?(who/that在從句中作主語(yǔ))
  He is the man whom/ that I saw yesterday.
他就是我昨天見(jiàn)的那個(gè)人。(whom/that在從句中作賓語(yǔ))

2) Whose 用來(lái)指人或物,(只用作定語(yǔ), 若指物,它還可以同of which互換), 例如:
  They rushed over to help the man whose car had broken down.  那人車壞了,大家都跑過(guò)去幫忙。
  Please pass me the book whose (of which) cover is green. 請(qǐng)遞給我那本綠皮的書(shū)。

3)which, that
  它們所代替的先行詞是事物的名詞或代詞,在從句中可作主語(yǔ)、賓語(yǔ)等,例如:
  A prosperity which / that had never been seen before appears in the countryside. 農(nóng)村出現(xiàn)了前所未有的繁榮。(which / that在句中作主語(yǔ))
  The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作賓語(yǔ))
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