quackBrE/kwæk/NAmE/kwæk/verbpresent simple - I / you / we / theyquackBrE/kwæk/NAmE/kwæk/present simple - he / she / itquacksBrE/kwæks/NAmE/kwæks/past simplequackedBrE/kwækt/NAmE/kwækt/past participlequackedBrE/kwækt/NAmE/kwækt/ -ing formquackingBrE/ˈkwækɪŋ/NAmE/ˈkwækɪŋ/[I]whenaduckquacks, itmakesthenoisethatistypicalofducks(鸭子)嘎嘎叫,呱呱叫