before 英 [bɪˈfɔ:(r)] 美 [bɪˈfɔr,-ˈfor]
prep. 在…之前，先于 adv. 以前；在前 conj. 在…以前；在…之前
- When one thing precedes another, it comes before. You put your socks on before your shoes, you close the door before you lock it, and you should make sure the store is open before you leave home.
- prep. 在…之前，先于
- adv. 以前；在前
- conj. 在…以前；在…之前
1. before lunch
2. the day before yesterday
3. I have seen him before.
4. She said it before witnesses.
5. Do it before you forget.
6. You should have told me so before.
- before (adv., prep.) Old English beforan "in front of, in former times; in the presence of, in front of in time or position," from Proto-Germanic *bi- "by" (see by) + *forana "from the front," adverbial derivative of *fora (from PIE root *per- (1) "forward," hence "in front of, before"). Compare Old Frisian bifara, Old Saxon biforan, Old High German bifora, German bevor.