He looked at me in an absent way.他茫然地望着我。 He was absent on business.他因事外出。 相关短语： be absent from a friend和朋友分离 be absent from home/school/office不在家／缺课／缺勤 be absent without excuse擅自缺席 2．persuade sb. to do sth.=persuade sb. Into doing sth.说服某人做某事 persuade若用于过去式，是指劝说成功，若劝说不成功，就不应用persuaded,，而应用tried topersuade或advised.