YOU SAID:

a mouse is a mouse until it is a rat then it is a rat and now it is a mouses.

INTO JAPANESE

マウスはラットになるまではマウスであり、その後はラットであり、今はマウスです。

BACK INTO ENGLISH

A mouse was a mouse until it became a rat, then it was a rat, and now it's a mouse.

INTO JAPANESE

ネズミはネズミになるまではネズミで、その後ネズミになり、そして今はネズミです。

BACK INTO ENGLISH

A mouse was a mouse until it became a mouse, then it became a mouse, and now it's a mouse.

INTO JAPANESE

ねずみは、ねずみになるまではねずみで、その後ねずみになり、そして今もねずみです。

BACK INTO ENGLISH

A mouse was a mouse until it became a mouse, then it became a mouse, and it is still a mouse.

INTO JAPANESE

ネズミはネズミになるまではネズミで、その後ネズミになり、そして今もネズミです。

BACK INTO ENGLISH

A mouse was a mouse until it became a mouse, then it became a mouse, and it is still a mouse.