YOU SAID:
My zealous kangaroo ate my sandwich and had a child after.
INTO JAPANESE
私の熱心なカンガルーは私のサンドイッチを食べて、その後子供をもうけた。
BACK INTO ENGLISH
My avid kangaroo ate my sandwich and then made a child.
INTO JAPANESE
私の熱心なカンガルーは私のサンドイッチを食べて、それから子供を作りました。
BACK INTO ENGLISH
My avid kangaroo ate my sandwich and then made a child.
That didn't even make that much sense in English.