题目内容
5．Tom with his classmates basketball on the playground now．（ ）| A． | are play | B． | is playing | C． | are playing | D． | is play |
分析 汤姆和他的同学们正在操场上打篮球．
解答 答案：C．结合now可知表达的是正在进行的动作，故用现在进行时be+doing，主语含有with短语看前面的Tom，故is，故答案是B．
点评 可用来表示现在进行时的时间状语，常用的有：now，this week，at the moment，right now 等；或者告诉你一个准确的现在时间，或者用look，listen（常用于句子的开头，表示提醒听者注意正在发生的事情）．
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