Lily with her parents ______ Oxfam since two years ago.
A.has joinedB.have joinedC.has been inD.have been in

試題分析:句意:莉莉和她的父母在兩年前就已經(jīng)加入了施樂(lè)會(huì)。結(jié)合語(yǔ)境可知本句描述的是已經(jīng)持續(xù)了兩年的動(dòng)作,故用現(xiàn)在完成時(shí)態(tài)。with her parents是伴隨主語(yǔ),真正主語(yǔ)是莉莉,故助動(dòng)詞用單數(shù)。瞬間動(dòng)詞不能和持續(xù)性時(shí)間狀語(yǔ)連用,選項(xiàng)AC,表示瞬間動(dòng)作,故選C。
點(diǎn)評(píng):英語(yǔ)中的時(shí)態(tài)主要是借助于時(shí)間狀語(yǔ)與上下文語(yǔ)境來(lái)進(jìn)行判斷。解答此類(lèi)題型,首先要注意句子中的時(shí)間狀語(yǔ),如果沒(méi)有則要通過(guò)分析上下文,結(jié)合語(yǔ)境來(lái)判斷句子的時(shí)態(tài)。英語(yǔ)中的現(xiàn)在進(jìn)行時(shí)態(tài)和現(xiàn)在完成時(shí)態(tài)中的助動(dòng)詞,往往因?yàn)橹髡Z(yǔ)的不同,而有所不同,需要注意與主語(yǔ)保持一致。完成時(shí)態(tài)中的動(dòng)詞有瞬間動(dòng)詞和持續(xù)性動(dòng)詞之分,瞬間動(dòng)詞的過(guò)去分詞強(qiáng)調(diào)的是動(dòng)作的完成,持續(xù)性動(dòng)詞強(qiáng)調(diào)的是動(dòng)作的持續(xù)性,F(xiàn)在完成時(shí)態(tài)中表示一段時(shí)間的時(shí)間狀語(yǔ)不能和瞬間動(dòng)詞連用,持續(xù)性動(dòng)詞不能和表示瞬間時(shí)間的時(shí)間狀語(yǔ)連用,需注意區(qū)分。
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