YOU SAID:

I know you want to go to the shop to buy potatoes

INTO JAPANESE

私はあなたがジャガイモを買いに店に行きたいのを知っています

BACK INTO ENGLISH

i know you want to go to the store to buy potatoes

INTO JAPANESE

私はあなたがジャガイモを買いに店に行きたがっていることを知っています

BACK INTO ENGLISH

I know you want to go to the store to buy potatoes

INTO JAPANESE

私はあなたがジャガイモを買いに店に行きたいと思っていることを知っています

BACK INTO ENGLISH

I know you want to go to the store to buy potatoes