whitenBrE/ˈwaɪtn/NAmE/ˈwaɪtn/verbpresent simple - I / you / we / theywhitenBrE/ˈwaɪtn/NAmE/ˈwaɪtn/present simple - he / she / itwhitensBrE/ˈwaɪtnz/NAmE/ˈwaɪtnz/past simplewhitenedBrE/ˈwaɪtnd/NAmE/ˈwaɪtnd/past participlewhitenedBrE/ˈwaɪtnd/NAmE/ˈwaɪtnd/ -ing formwhiteningBrE/ˈwaɪtnɪŋ/NAmE/ˈwaɪtnɪŋ/[I, T]tobecomewhiteorwhiter; tomakesthwhiteorwhiter（使）变白，变得更白◆Hegrippedthewheeluntilhisknuckleswhitened. 他紧紧握住方向盘，握得指关节都变白了。◆~sthSnowhadwhitenedthetopsofthetrees. 大雪把树冠变成了白色。