before 的反義詞是：
later: 在後
中文解釋：
] 全球發音 跟讀 口語練習prep. 在…之前，先於
adv. 以前;在前
conj. 在…以前;在…之前
短語說說：
Before Class 上課前 ; 課前 ; 上課之前 ; 做好課前
Before service 售前服務 ; 售前辦事
than before 比以前 ; 前比
詞典百科：
If something happens before a particular date, time, or event, it happens earlier than that date, time, or event. 在 (某日、某時、某事件) 以前
例：Annie was born a few weeks before Christmas.
安妮在聖誕節前幾個禮拜出生。
re World War II, women were not recruited as intelligence officers.
二戰前，女性不被徵募爲情報官。
If a particular situation has to happen before something else happens, this situation must happen or exist in order for the other thing to happen. 在 (某事發生) 之前 (另一情況必須發生)
例：There was additional work to be done before all the troops would be ready.
在全軍準備就緒之前還有些事情要做。
If you do one thing before doing something else, you do it earlier than the other thing. 在 (做某事) 之前
例：He spent his early life in Sri Lanka before moving to Canada.
移居加拿大前，他早年生活在斯里蘭卡。
If there is a period of time or if several things are done before something happens, it takes that amount of time or effort for this thing to happen. 經過 (一段時間或努力) 才
例：It was some time before the door opened in response to his ring.
他按過門鈴後好一會兒門纔打開。
相關詞語的反義詞：
beforehand 的反義詞是 middle
beforehand 的反義詞是 middle , late