题目内容

Look ！A boy       on the playground.
A．runsB．runningC．is runingD．is running
D

试题分析：句意;看!一个男孩正在操场上跑步. 结合语境可知本句描述的是正在进行的动作, 故用现在进行时态. run是以重读闭音节结尾的单词, 变现在分词要双写最后一个辅音字母, 故选D.
点评：英语现在进行时表示目前正在进行的动作, 固定结构为be动词加动词的现在分词，考试中可以结合上下文及时间词，句子结构等信息来进行判断。对于以重读闭音节结尾的单词，需要注意双写最后一个辅音字母在加ing。
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