I asked for a receipt.是什么意思？

I asked for a receipt.

我要一张发票。

asked

v. 问( ask的过去式和过去分词 )，询问，要求，请求；

例句
The defendant asked for 21 similar offences to be taken into account...
被告要求考虑到类似的21起违法行为的情况。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

receipt

n. 收据，发票，收入；vt. 开收据，[美国英语]给…开收据，承认收到；

例句
She put the receipt into the innermost pocket of her bag.
她把收据放在提包最里面的口袋里。