题目内容：

Mary does not always go to school early.She's __________ late for school.
Mary does not always go to school early.She's
__________ late for school.
A always B usually C sometimes Dnever
always 和 usually有什么区别?

优质解答

always表示“总是,老是”,有责备的意思；而usually是经常的意思,只是说动作经常发生.
这里从上下文来看,应该用“sometimes”,因为前文说Mary不总是上学早,所以应该是“有时”迟到.
not always 是部分否定的.