down·changeBrE/ˈdaʊntʃeɪndʒ/NAmE/ˈdaʊntʃeɪndʒ/verbpresent simple - I / you / we / theydownchangeBrE/ˈdaʊntʃeɪndʒ/NAmE/ˈdaʊntʃeɪndʒ/present simple - he / she / itdownchangesBrE/ˈdaʊntʃeɪndʒɪz/NAmE/ˈdaʊntʃeɪndʒɪz/past simpledownchangedBrE/ˈdaʊntʃeɪndʒd/NAmE/ˈdaʊntʃeɪndʒd/past participledownchangedBrE/ˈdaʊntʃeɪndʒd/NAmE/ˈdaʊntʃeɪndʒd/ -ing formdownchangingBrE/ˈdaʊntʃeɪndʒɪŋ/NAmE/ˈdaʊntʃeɪndʒɪŋ/[I]tochangetoalowergearinavehicle（开车时）换低挡，换成低速挡SYNchange downOPPupchange