YOU SAID:

when soccer players kick, they kick hard unless they are three years old

INTO JAPANESE

サッカー選手が蹴るとき、彼らは3歳でない限り激しく蹴る

BACK INTO ENGLISH

When soccer players kick, they kick hard unless they are three years old

INTO JAPANESE

サッカー選手が蹴るとき、彼らは3歳でない限り激しく蹴ります

BACK INTO ENGLISH

When soccer players kick, they kick hard unless they are three years old