sb often do.

问题描述:

sb often do.
是Sb often do sth.
还是Sb often doing sth.
哪个正确?
1个回答 分类:英语 2014-12-10

问题解答:

我来补答
应该是SB OFTEN DO STH对
OFTEN 后面经常不加V.(动词)ing
 
 
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