It is important to have skills in both non-honorific and honorific languages in order to use Japanese correctly.
Japanese Sentence
突然おじから電話があった。
Romaji Reading
Totsuzen oji kara denwa ga atta.
English Meaning
Suddenly I got a call from my uncle. (Plain Form)
Japanese Sentence
突然おじから電話がありました。
Romaji Reading
Totsuzen oji kara denwa ga arimashita.
English Meaning
Suddenly I got a call from my uncle. (Polite Form)
Japanese Sentence
こちらは、私のおじです。
Romaji Reading
Kochira wa, watashi no oji desu.
English Meaning
This is my uncle. (Polite Form)
The plain form is「こちらは、私のおじだ。」. However, this is incorrect Japanese. This is because「こちら」is the polite form of「これ」. If we use「これ」when calling people, it is too rude. If you want to say “This is my uncle.” in plain form, please ask about it through our mail support. To teach it correctly, we need to know the situation.