YOU SAID:

my cousins baby cried when i sat down with him nooooo

INTO JAPANESE

私のいとこの赤ちゃんは、私は彼と一緒に座って泣いた

BACK INTO ENGLISH

My cousin's baby cried when I sat with him

INTO JAPANESE

私が彼と一緒に座ったとき、私のいとこの赤ちゃんは泣きました

BACK INTO ENGLISH

My cousin's baby cried when I sat down with him

INTO JAPANESE

いとこの赤ちゃんは、私が彼と一緒に座ったときに泣いた

BACK INTO ENGLISH

My cousin's baby cried when I sat down with him