YOU SAID:

Watching grass grow is so boring.

INTO JAPANESE

草が育つのを見るのはとてもつまらない。

BACK INTO ENGLISH

It is very boring to see grass grow.

INTO JAPANESE

草が生えているのを見るのはとてもつまらない。

BACK INTO ENGLISH

It is very boring to see grass growing.

INTO JAPANESE

草が生えているのを見るのはとてもつまらない。

BACK INTO ENGLISH

It is very boring to see grass growing.