题目内容
13．现在中国正在快速发展起来．Chinais developing fast now．
分析 is developing．
解答 答案：is developing．这里是说正在做某事再结合时间状语now，故用现在进行时am/is/are+doing，主语是China，谓语用单数is，发展develop，现在分词是developing，故答案是is developing．
点评 现在进行时表示正在进行的动作或存在的状态．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）．例如：Listen，She is singing an English song．
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