N4
でございます
To be, Polite copula
こちらは田中でございます。
This is Tanaka.
Explanation
「でございます」 is the very polite form of 「です」. It follows a noun or a な-adjective and is used to introduce who or what something is: answering the phone you say 「はい、ABC商事でございます」 (Hello, this is ABC Trading), and 「本日は雨でございます」 (It is raining today). It is everywhere in self-introductions, business cards and hotel service.
Mixed up with
Levels: 「だ」 < 「です」 < 「でございます」.
「でございます」 means 'is'. It cannot mean 'there is'; for that use 「ございます」.
It goes after a noun or a な-adjective stem, not directly after a verb or a plain い-adjective.