上氣不接下氣 : 呼吸急促，氣喘吁吁。 「操場跑了十圈之後，他已經喘得上氣不接下氣了，那裡還能即刻回答你的話呢？」

喘不过气或气喘吁吁

喘不上气

呼吸很急促------very formal 喘不过气（来） or 上气不接下气 there two are different. u can use 喘不过气（来） for all kinds of cases as long as someone breaths very fast or out of breath. he is maybe get hurt, or get sick, or do some sports. we dont know. however, 上气不接下气 is always used for only one case: do some sports

喘不过气。