英语语法分析

They're 'hard' on the students, says Arlington Park Principal Nikia Smith, because they want them to excel, adding that homelessness is no excuse for low expectations.

阿灵顿公园学校校长尼基亚·史密斯表示，老师们之所以对学生很严格，是因为他们希望孩子们能够获得出色的成绩。她补充说，无家可归不是降低要求和期望值的借口。