8.-How long have you________?
-Since two years ago.( 。
A.bought the cameraB.got married
C.left homeD.been away from home

分析 -你離開家多久了?
-兩年前.

解答 答案:D.
結(jié)合下文是說自從兩年前,也就是離開leave這個(gè)動(dòng)作發(fā)生在過去,一直延續(xù)到現(xiàn)在,故用現(xiàn)在完成時(shí)have/has+過去分詞,leave是短暫性動(dòng)詞不能與how long連用,故換成be away from,be的過去分詞是been,故答案是D.

點(diǎn)評(píng) 現(xiàn)在完成時(shí)特別強(qiáng)調(diào)瞬間動(dòng)詞和持續(xù)性動(dòng)詞.瞬間動(dòng)詞表示短暫、不能持續(xù)一段時(shí)間的動(dòng)作,如e,go,leave,start,begin,bee,receive,die,而持續(xù)性動(dòng)詞表示能持續(xù)一段時(shí)間的動(dòng)作,如work,stay,live,learn等.下面列舉一些常用的瞬間動(dòng)詞和對(duì)應(yīng)的持續(xù)性動(dòng)詞:leave,be away;die,be dead;put on,wear;fall ill,be ill;borrow,keep;catch cold,have a cold;buy,have;join the army,be in the army.例如:
  My brother has been in the army for some time我兄弟參軍有一段時(shí)間了.
  My brother joined the army some time ago我兄弟是一段時(shí)間以前參的軍.

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