“客户要在今天下班前收到我们的报价单”
------- Our client is to get our prices before he knocks off work today.(他下班)
-------Our client is to get our prices before we knock off work today.(我们下班)
--------Our client is to get our prices before work is over today.(只强调下班)
(你的语境不清楚,所以我三个都给你.语境不清楚会导致不便.)