7.到目前為止,我們已經(jīng)為無家可歸的老人,建造了許多"老年之家".
So far,wehave built many Old People′s Homes for homeless old people.

分析 have built.

解答 答案:have built.結(jié)合句意,so far表示到目前為止,也就是建造build這個動作發(fā)生在過去,一直持續(xù)到現(xiàn)在,對現(xiàn)在有一定的影響,故用現(xiàn)在完成時have/has+過去分詞,主語we復(fù)數(shù),故have,bulid的過去分詞built.故答案是have built.

點評 當(dāng)so far修飾謂語動詞且表示一直持續(xù)到現(xiàn)在時,謂語動詞通常要用現(xiàn)在完成時.如:So far there has been no bad news.到現(xiàn)在為止還沒有什么壞消息. So far 50 people have died in the fighting.到現(xiàn)在為止,已有50人在戰(zhàn)斗中喪生.

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