關(guān)系副詞引導(dǎo)的定語(yǔ)從句
　　關(guān)系副詞可代替的先行詞是時(shí)間、地點(diǎn)或理由的名詞，在從句中作狀語(yǔ)。
　　1. 關(guān)系副詞when, where, why的含義相當(dāng)于"介詞+ which"結(jié)構(gòu)，因此常常和"介詞+ which" 結(jié)構(gòu)交替使用，例如：
　　There are occasions when (on which) one must yield.
　　Beijing is the place where (in which) I was born.
　　Is this the reason why (for which) he refused our offer?
　　關(guān)系副詞引導(dǎo)的定語(yǔ)從句
　　關(guān)系副詞可代替的先行詞是時(shí)間、地點(diǎn)或理由的名詞，在從句中作狀語(yǔ)。
　　1. 關(guān)系副詞when, where, why的含義相當(dāng)于"介詞+ which"結(jié)構(gòu)，因此常常和"介詞+ which" 結(jié)構(gòu)交替使用，例如：
　　There are occasions when (on which) one must yield.
　　Beijing is the place where (in which) I was born.
　　Is this the reason why (for which) he refused our offer?
　　關(guān)系代詞在定語(yǔ)從句中作賓語(yǔ)時(shí)，可以省略。
　　(1) Behind one door was a hungry tiger (that/which) the guards had put there.
　　(2) The tiger would immediately jump upon the poor man (whom/who) the guards had brought to the arena.
　　3. whose只用作定語(yǔ),可以用來(lái)指人或物; 若指物，它還可以同of which互換, 例如：
　　(1) They rushed over to help the man whose car had broken down.
　　(2) Please pass me the book whose (of which) cover is green.