YOU SAID:

so if i keep doing this, ill stop getting good grades

INTO JAPANESE

だから私がこれを続ければ、病気は良い成績をとるのをやめます

BACK INTO ENGLISH

So if I keep doing this, the illness will stop getting good grades

INTO JAPANESE

だから私がこれを続ければ、病気は良い成績をとることができなくなります

BACK INTO ENGLISH

So if I keep doing this, the illness won't get good grades

INTO JAPANESE

だから私がこれを続ければ、病気は良い成績をとることができません

BACK INTO ENGLISH

So if I keep doing this, the illness won't get good grades