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—

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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