"a serious student of history" "a serious attempt to learn to ski" "gave me a serious look" "a serious young man" "are you serious or joking?" "Don't be so serious!"
"marriage is a serious matter"
"a dangerous operation" "a grave situation" "a grave illness" "grievous bodily harm" "a serious wound" "a serious turn of events" "a severe case of pneumonia" "a life-threatening disease"
"good music" "a serious book"
"raised serious objections to the proposal" "the plan has a serious flaw"
误 Do you think he is serious in leaving his wife?
正 Do you think he is serious about leaving his wife?
析 当表示“对…严肃”时,用介词 about ,不可用介词in。