He skipped a grade so he finished high school early.他跳了一级，所以中学毕业早。If I changed departments, I'd probably have to move down a grade.我如果转系的话，大概得降一级。 She will skip a grade and go right from the fourth to the sixth grade next September.明年九月，她将跳一级，直接从四年级跳到六年级。