The children are dirty from head to foot because they in the mud all morning．( )A．playB．had playedC．will playD．have been playing 题目和参考答案——青夏教育精英家教网—

题目内容

16．The children are dirty from head to foot because they ________ in the mud all morning．（　　）

	A．	play		B．	had played
	C．	will play		D．	have been playing

分析句意：孩子们从头到脚都很脏，因为他们一早晨都在泥里玩．

解答答案D
由时间状语all morning可知，此处应该用现在完成进行时．表示"动作发生在过去，一直持续到现在，并且有可能再继续下去．"故选D项．

点评考查现在完成进行时．首先由时间状语判断出时态．知道其表示的意义，即：表示"动作发生在过去，一直持续到现在，并且有可能再继续下去．"然后选择合适的结构．

练习册系列答案

7．虽然这种产品有利环保，但因其价格昂贵，几乎无人问津．（in favor of）Although this product is in favor of environmental protection，few people show interest in/would like to buy it because of its high price．．

4．When Mary arrived she found all her children ______ for nearly two hours．（　　）

	A．	have gone to sleep		B．	fell asleep
	C．	was falling asleep		D．	had been asleep

11．Spending a few hours learning about the history and culture of the destination will help tourists understand they're seeing（　　）

1．---Did you drive off the road because you were tired and sleepy？
---Absolutely not!Actually I _____ to avoid a truck overtaking me on the inside lane．（　　）

7．据说那位年轻教授当众反对了校长的提议．（object）It was said that the young professor objected to the headmaster's proposal in public．．

4．选举结果出乎预料，这令大多数人颇为失望．（which）The outcome/result of the election was out of expection，which made most people feel disappointed．．

3．你认为人类定居另一颗行星的梦想会实现吗？（come true） Do you think the dream of human beings'settling on another planet/the dream that man will settle on another planet will come true？

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