before (EN)

介词，副词，连词

介词 “before”

1. 在……之前
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   Finish your homework before dinner.
2. 在……之前（指顺序或位置）
   In the dictionary, the word "apple" appears before "banana."
3. 在……前面
   The majestic mountain rose before our eyes as we approached the valley.
4. 在……面前
   She nervously presented her project before the entire class.
5. 受……审查或控制
   The proposal will be laid before the committee next Thursday.
6. 优先于
   She always puts her family's needs before her own.

副词 “before”

1. 以前
   She had visited the museum once before.

连词 “before”

1. 在……之前（指时间上的先后）
   Finish your homework before dinner is ready.
2. 宁愿……也不……
   I'd go hungry before I'd steal a loaf of bread.