YOU SAID:

Penguins dont fly, I am very sad about that

INTO JAPANESE

ペンギンは飛べない、それがとても悲しい

BACK INTO ENGLISH

Penguins can't fly, that's so sad

INTO JAPANESE

ペンギンは飛べない、それはとても悲しいことだ

BACK INTO ENGLISH

Penguins can't fly, it's so sad

INTO JAPANESE

ペンギンは飛べない、とても悲しい

BACK INTO ENGLISH

Penguins can't fly, so sad

INTO JAPANESE

ペンギンは飛べないのが悲しい

BACK INTO ENGLISH

It's sad that penguins can't fly

INTO JAPANESE

ペンギンが飛べないのは悲しい

BACK INTO ENGLISH

It's sad that penguins can't fly