就是定語(yǔ)從句,理論上,完全可以用where 代替.
Cancer is a serious disease【 in which harmful cells spread through the body.】
癌癥是一種【有害細(xì)胞遍布全身的】嚴(yán)重的疾病.首先感謝你的回答。我覺(jué)得只能用in which而不能用where代替，如果先行詞是地點(diǎn)名詞是可以用where的。首先我不明白的是in which在從句中做什么成分？賓語(yǔ)？狀語(yǔ)？其次in在從句中和什么做搭配？(比如This is the house which i was born in.=This is the house in which i was born.in和從句中的born搭配)in which在句子中作狀語(yǔ)；in和什么詞搭配，你得看先行詞。你給的例句中，先行詞是house，be born in the house. 雖然where的先行詞通常是表示地點(diǎn)場(chǎng)合的名詞，但疾病作先行詞也不少見(jiàn)，比如 Rheumatoid arthritis is considered an autoimmune disease where the body attacks healthy cells.又： AIDS is a disease where the body is unable to fight off many infectious diseases as it normally could.其實(shí)關(guān)系副詞（where， when, why）引導(dǎo)定語(yǔ)從句時(shí)，在意義上常常相當(dāng)于一個(gè)“介詞+ which”結(jié)構(gòu)。where=in which 或at which; why= for which; when=at/on/during/in which 所以理論上是可以替代的。