YOU SAID:
I have to go to gymnastics in less than two hours
INTO JAPANESE
私は2時間以内に体操に行かなければならない
BACK INTO ENGLISH
I have two hours to go to gymnastics.
INTO JAPANESE
私は体操に行く時間が2時間ある。
BACK INTO ENGLISH
I have two hours to go to gymnastics.
Well done, yes, well done!