题目内容
1.Ourrivers have been polluted by waste from factories.(river)分析 我们的河流已经被工厂的废水污染了.
解答 答案:rivers.结合have been polluted是现在完成时的被动语态,助动词have是复数,故可知主语是复数,our是形容词性物主代词,后加名词,river是名词"河流",复数是rivers.故答案是rivers.
点评 形容词性物主代词有:my(我的),your(你的、你们的),our(我们的),his(他的),her(她的),its(它的),their(他们的).形容词性物主代词具有形容词的特性,常放在名词前面作定语,表明该名词所表示的人或物是"谁的"或xxx belongs to sb.
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