JLPT N3 task explanation


I have been solving the grammar tasks for JLPT N3. I have made a mistake in
the following question.

> お金をいただいてからでないと、商品はお渡し（ ）。
>
> ーします  
>  ーできます  
>  ーなりません  
>  ーできません

I know the right answer is できません, but I still don't understand why. Can you
explain to me please why other answers are wrong? It just seems to me that
there is not enough context to solve this task.

I can guess that the first part translates like: If after I get money, it
doesn't come off, the delivery of the item is... But I can't guess the right
answer only from this. Can you help me please to understand it?




your confusion stems from the fact that you are mis-translating でない as "can't
come off". However this is actually a portion of a standard sentence fragment:

> てからでないと

which is a phrase meaning "something can't happen until something else happens
first" (here is a link that might help:
<https://japanesetest4you.com/flashcard/learn-
jlpt-n2-grammar-%E3%81%A6%E3%81%8B%E3%82%89%E3%81%A7%E3%81%AA%E3%81%84%E3%81%A8-tekara-
denai-to/>

so this sentence, with できません correctly attached, translates to

> Until/Unless I/we receive the money I/we cannot deliver the goods.




your confusion stems from the fact that you are mis-translating でない as "can't
come off". However this is actually a portion of a standard sentence fragment:

> てからでないと

which is a phrase meaning "something can't happen until something else happens
first" (here is a link that might help:
<https://japanesetest4you.com/flashcard/learn-
jlpt-n2-grammar-%E3%81%A6%E3%81%8B%E3%82%89%E3%81%A7%E3%81%AA%E3%81%84%E3%81%A8-tekara-
denai-to/>

so this sentence, with できません correctly attached, translates to

> Until/Unless I/we receive the money I/we cannot deliver the goods.

