sternly

adv.严厉地,苛刻地,坚决地

严厉地，严肃地，严肃认真地

副词

1、The teacher looked at the students sternly, warning them to be quiet.
老师严厉地看着学生们，警告他们安静下来。
2、She spoke sternly to her children, reprimanding them for their misbehavior.
她严肃地训斥自己的孩子，为他们的不良行为进行批评。