Usage of 用意 with different conjugations of 出来る


Is there a difference in meaning between the following two sentences?

> 昼食の用意が出来ました。
>
> 昼食の用意が出来ています。

Which one is more appropriate when announcing to your family that lunch is
ready?




用意が出来ました means something have just become ready, whereas 用意が出来ています means
something is (already) ready. Use the former to someone who has been waiting
for the lunch, and use the latter to someone who have just returned home.

See these questions if you're not sure why 出来ています means such a thing:

  * [準備が出来ている-Meaning and Explanation](https://japanese.stackexchange.com/q/17441/5010)
  * [When is Vている the continuation of action and when is it the continuation of state?](https://japanese.stackexchange.com/q/3122/5010)




用意が出来ました means something have just become ready, whereas 用意が出来ています means
something is (already) ready. Use the former to someone who has been waiting
for the lunch, and use the latter to someone who have just returned home.

See these questions if you're not sure why 出来ています means such a thing:

  * [準備が出来ている-Meaning and Explanation](https://japanese.stackexchange.com/q/17441/5010)
  * [When is Vている the continuation of action and when is it the continuation of state?](https://japanese.stackexchange.com/q/3122/5010)

