YOU SAID:
i like big helicopters but not aeroplanes
INTO JAPANESE
私は大きなヘリコプターが好きですが、飛行機は好きではありません
BACK INTO ENGLISH
I like big helicopters, but I do not like airplanes
INTO JAPANESE
私は大きなヘリコプターが好きですが、私は飛行機が好きではありません
BACK INTO ENGLISH
I like big helicopters, but I do not like airplanes
That didn't even make that much sense in English.