beforeon Basic wordsalso onCEFR Beginners (A1)? CEFR Elementary (A2)? CEFR Intermediate (B1)? CEFR Mastery level (C2)? Band 1 (BND1)? Band 2 (BND2)? Band 3 (BND3)? ?较早,在前,曾经, 在...之前, 以前,曾经,较早 before before(adverb) ?较早,在前,曾经 before before(conjunction) 在...之前 before before(preposition) 以前,曾经,较早 Forms adverbconjunctionpreposition before before before