出来る

日本語ができます。
nihongo ga dekimasu.
Japanese-(subject marker)-can
(I) know Japanese.

最近できたレストランに行きましょう。
saikin dekita resutoran ni ikimashou.
recent-finished-restaurant-to-let's go
Let's go to the new restaurant.

B) finished, complete - this is usually found in the past tense but you can use it in the future meaning "when done..." できたら教えて。 dekitara oshiete - Let me know when you are done.