proveon Basic wordsalso onCEFR Intermediate (B1)? CEFR Upper intermediate (B2)? Band 2 (BND2)? 证实,证明 proved proved(verb) 检验,证明(prove的过去式和过去分词),试验 proven proven(verb) 证明(prove的过去分词) proven proven(adjective) 经过验证或证实的 proves proves(verb) 证明(prove的第三人称单数) proving proving(verb) 检验,证明(prove的现在分词),试验 unproven unproven(adjective) 未经检验的,未经证明的 prove prove(verb) 证实,证明 Forms verbadjective proved proven proven unproven proves proving prove