短語(yǔ)詞組短語(yǔ)preparation before the class 課前準(zhǔn)備Before the class statement 在同學(xué)麪前講話know before the class 班前會(huì)Before -class Tasks 課前任務(wù)Before the class 在上課之前playing before the class 課前樂(lè)Before The Class Began 以前班級(jí)開(kāi)始Ten minutes before the class 上課的前十分鍾Before the class would start 在上課開(kāi)始之前 返回 before class