一般现在进行时的末尾都是由ing构成的,一般现在时就是动词的原型.主要区别就在此.比如read的现在进行时就是reading,read就是动词原型,也是一般现在时.你还可以看看http://baike.baidu.com/view/201163.html?wtp=ttht...
怎样分辨现在进行时和一般现在时He doesn't work/ isn't working today.Bur we d
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