YOU SAID:
I went down to the shops to pick up some fish and chips.
INTO JAPANESE
フィッシュアンドチップスを買いに店に行った。
BACK INTO ENGLISH
I went to the store to buy fish and chips.
INTO JAPANESE
フィッシュアンドチップスを買いに店に行きました。
BACK INTO ENGLISH
I went to the store to buy fish and chips.
That didn't even make that much sense in English.