It was some time _____ I realised the fact that life had become difficult for many villages in western Europe.
A.untilB.beforeC.unlessD.since

試題分析:句意:過(guò)了一段時(shí)間,我才意識(shí)到對(duì)西歐的許多村莊來(lái)說(shuō),生活已經(jīng)變得很艱難。It was/will be + 一段時(shí)間 + before引導(dǎo)的時(shí)間狀語(yǔ)從句,是一個(gè)固定句型,意為:過(guò)了多長(zhǎng)時(shí)間才……/要過(guò)多長(zhǎng)時(shí)間才會(huì)……。此句型容易與it is +一段時(shí)間+since從句混淆,注意,before的那個(gè)句型中,it后面用的是一般過(guò)去時(shí)或一般將來(lái)時(shí),而since的這個(gè)句型中,it后面用的是一般現(xiàn)在時(shí)或現(xiàn)在完成時(shí),意:自從since從句中的那個(gè)動(dòng)作發(fā)生以來(lái)至現(xiàn)在的時(shí)間是多久。
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