题目内容
5．My mother _______dinner now．（ ）| A． | is cooking | B． | does | C． | cooks | D． | cook |
分析 我的妈妈现在正在做饭．
解答 答案：A
根据句中的时间状语为now"现在"，可知句子描述的是现在正在发生的事情，故用现在进行时态，该时态的结构为is/am/are+现在分词，根据主语My mother是第三人称单数，动词be用is，cook的现在分词cooking，套用结构，故选A
点评 本题主要考查现在进行时，做此类题目，可以根据时间状语，也可以根据上下文语境，进行判断，就本题而言now是现在进行时的标志词
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