---I saw your sister ride a new bike this morning.
---A new bike? She ________ it for about two years.
A．boughtB．has boughtC．hadD．has had
D

試題分析：句意：今天早上我看見你的姐姐騎一輛新的自行車�！惠v新自行車？她已經(jīng)擁有它兩年了。結(jié)合語境可知下文描述的是從過去一直持續(xù)到現(xiàn)在的動(dòng)作，故用過去完成時(shí)態(tài)，選項(xiàng)B表示瞬間動(dòng)作，選D。
點(diǎn)評(píng)：英語中的時(shí)態(tài)主要是借助于時(shí)間狀語與上下文語境來進(jìn)行判斷。解答此類題型，首先要注意句子中的時(shí)間狀語，如果沒有則要通過分析上下文，結(jié)合語境來判斷句子的時(shí)態(tài)。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)間狀語連用，需注意區(qū)分。
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