YOU SAID:

Hallo nice and nephew is Uncle Roger

INTO JAPANESE

ハローはいい子で、甥はロジャー伯。

BACK INTO ENGLISH

Hello is a good boy and my nephew is Uncle Roger.

INTO JAPANESE

こんにちははいい子で、私の甥はロジャーおじさんです。

BACK INTO ENGLISH

Hi, I'm a good boy and my nephew is Uncle Roger.

INTO JAPANESE

こんにちは、私は良い子で、甥はロジャーおじさんです。

BACK INTO ENGLISH

Hi, I'm a good boy and my nephew is Uncle Roger.