like there was no tomorrow字面意思是好像没有将来似的，即不顾一切地。

【例句】
After she won the lottery, she began spending money like there was no tomorrow.
她中了彩票后，开始不顾一切地花钱。

I was very disappointed and cried like there was no tomorrow.
当时，我失望极了，哭的就像天都要塌下来了似的。