事前

shì qián qǐng shì

事前请示

ask for instructions in advance

shì qián dà jiā dōu yǐ wéi méi yǒu shén me kùn nán

事前大家都以为没有什么困难。

Beforehand everybody thought it would be simple.

shì qián qǐng shì shì hòu bào gào

事前请示，事后报告

ask for instructions in advance and submit reports afterwards

shì qián cóng fàn

事前从犯

accessory before the fact

shì qián wǒ yī wú suǒ zhī

事前我一无所知。

I was kept ignorant before the event.

shì qián yīng gāi zuò hǎo yī qiè zhǔn bèi

事前应该做好一切准备。

All preparations should be made beforehand.

shì qián háo wú zhǔn bèi

事前毫无准备

with no preparation at all

shì qián de xuān chuán

事前的宣传

advance billing

shì qián yào shèn zhòng kǎo lǜ miǎn de fā shēng wèn tí shí méi zhuā náo

事前要慎重考虑，免得发生问题时没抓挠。

Think things over well beforehand and be prepared for all eventualities.