YOU SAID:

this phrase is very hard (i think)

INTO JAPANESE

このフレーズは非常に難しいです(私は思います)

BACK INTO ENGLISH

This phrase is very difficult (I think)

INTO JAPANESE

このフレーズは非常に難しいと思います

BACK INTO ENGLISH

I think this phrase is very difficult.

INTO JAPANESE

このフレーズはとても難しいと思います。

BACK INTO ENGLISH

I think this phrase is very difficult.