【正文】
若為行為動詞,則從句中的關(guān)系代詞只能用which.。但不同之處主要有兩點: a)as 引導(dǎo)的定語從句可置于句首,而which不可。The sun heats the earth, which is very important to us.太陽使地球暖起來,這對我們?nèi)祟惡苤匾?。s health.如我們所知,吸煙有害健康。例如:Do you remember the day when you joined our club?(五)as, which 引導(dǎo)的非限定性定語從句由as, which 引導(dǎo)的非限定性定語從句,as和which可代整個主句,相當于and this或and that。This is the house where I lived two years ago.This is the house in which I lived two years ago.這是我兩年前住過的房子。(3)某些在從句中充當時間,地點或原因狀語的“介詞+關(guān)系詞”結(jié)構(gòu)可以同關(guān)系副詞when 和where 互換。(四)介詞+關(guān)系詞(1)介詞后面的關(guān)系詞不能省略。Liquid water changes to vapor, which is called evaporation.液態(tài)水變?yōu)檎羝?,這就叫做蒸發(fā)。He seems not to have