题目内容
3．Many trees and flowers around our city last year．（ ）| A． | were planted | B． | planted | ||
| C． | have been planted |
分析 去年在我们城市种了很多树和花．
解答 答案：A．结合last year表达的是过去的事情用一般过去时，主语Many trees and flowers是plant的承受者，故用一般过去时的被动语态was/were+过去分词，主语复数，故答案是A．
点评 被动语态由"助动词be+及物动词的过去分词"构成．被动语态的时态变化只改变be的形式，过去分词部分不变．疑问式和否定式的变化也如此．
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The dog looked as if（好像） he knew they were talking about him．He lay down at his master's feet，with a look in his eyes that seemed to say，"Nothing can separate us!"
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