In the spoken English of some areas in the US.the r sounds at the end of the words ．( )A．are droppedB．dropC．are being droppedD．have dropped 题目和参考答案——青夏教育精英家教网—

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4．In the spoken English of some areas in the US，the"r"sounds at the end of the words ．（　　）

	A．	are dropped		B．	drop
	C．	are being dropped		D．	have dropped

分析在美国有些地方的口语中，单词结尾的"r"这个音会被省略掉．

解答答案：A．表达的是客观事实用一般现在时，主语，the"r"作为drop的承受者，故用一般现在时的被动语态be+过去分词，主语the"r"sounds，故are，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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