I usually be school on Monday.这样吗?怎么看起来怪怪的。因为Be动词应该用am,那如果说I am usually at school on Monday也是怪怪的...情景是:A:怎么星期一老是不见你人呢?B:星期一我通常在学校..........请指点哦,并解答我的相关疑惑,使我以后遇到此类问题不再迷惘....不胜感激!