see sb doing 和see sb do区别用法
问题描述：
see sb doing 和see sb do区别用法
答
see sb doing 是指你看到某人正在做某事
而see sb do 请注意,一般情况下不表示看到某人经常做某事.它表示你看到过某人做某事.例如:the librian saw the man in black coat hide a book in his coat and leave the library yesterday.