YOU SAID:

When the mother of a mother becomes a grandmother, then she is probably very old

INTO JAPANESE

母親の母親がおばあちゃんになるとき、彼女はおそらく非常に高齢です

BACK INTO ENGLISH

When a mother's mother becomes a grandma, she will probably be very old

INTO JAPANESE

母親の母親がおばあちゃんになるとき、彼女はおそらくかなりの高齢になるでしょう

BACK INTO ENGLISH

When a mother's mother becomes a grandma, she will probably be quite old

INTO JAPANESE

母親の母親がおばあちゃんになると、かなりの高齢になるでしょう

BACK INTO ENGLISH

When the mother's mother becomes a grandmother, she will be quite old.

INTO JAPANESE

母の母がおばあちゃんになると、かなりの高齢になります。

BACK INTO ENGLISH

When my mother's mother becomes a grandmother, she becomes quite old.

INTO JAPANESE

母の母がおばあちゃんになると、かなりの高齢になります。

BACK INTO ENGLISH

When my mother's mother becomes a grandmother, she becomes quite old.