YOU SAID:

the mice is the third the rice just as if mice was twice or thrice

INTO JAPANESE

マウスは、まるでマウスが2回または3回だったかのように、米の3分の1である

BACK INTO ENGLISH

the mouse is a third of rice as if the mouse were two or three times

INTO JAPANESE

マウスは、まるでマウスが２回または３回であるかのように、米の３分の１である

BACK INTO ENGLISH

the mouse is a third of rice as if the mouse were two or three times