小学英语语法总结中的现在进行时.doc

小学英语语法总结中的现在进行时

　　1 现在进行时表示现在正在进行或发生的动作，也可表示当前一段时间内的活动或现阶段正在进行的动作。
　　2.现在进行时的肯定句基本结构为be+动词ing.
　　如：Tom is reading books in his study .
　　3.现在进行时的否定句在be后加not。
　　如：Tom is reading books in his study .
　　Tom is not reading books in his study .
　　4.现在进行时的一般疑问句把be动词调到句首。
　　如：Tom is reading books in his study .
　　Is Tom reading books in his study ?
　　5.现在进行时的特殊疑问的基本结构为：疑问词+一般疑问句?
　　如：Tom is reading books in his study . Tom is reading books in his study .
　　Is Tom reading books in his study ? Is Tom reading books in his study ?
　　What is Tom doing in his study? Where is Tom reading books?