YOU SAID:
to grandmother's house we go oh
INTO JAPANESE
祖母の家に行く
BACK INTO ENGLISH
I'm going to my grandmother's house.
INTO JAPANESE
私は祖母の家に行くつもりです。
BACK INTO ENGLISH
I'm going to go to my grandmother's house.
INTO JAPANESE
私は祖母の家に行くつもりです。
BACK INTO ENGLISH
I'm going to go to my grandmother's house.
That didn't even make that much sense in English.