YOU SAID:
I dont do homework very well
INTO JAPANESE
宿題はあまり上手くできません
BACK INTO ENGLISH
I can't do my homework very well
INTO JAPANESE
宿題が上手くできません
BACK INTO ENGLISH
I can't do my homework well
INTO JAPANESE
宿題が上手くできない
BACK INTO ENGLISH
I can't do my homework well
That didn't even make that much sense in English.