YOU SAID:

I think I can fish here.

INTO JAPANESE

ここで釣れると思う。

BACK INTO ENGLISH

I think we can catch it here.

INTO JAPANESE

ここで捕まえられると思う。

BACK INTO ENGLISH

I think we can catch him here.

INTO JAPANESE

ここで彼を捕まえることができると思う。

BACK INTO ENGLISH

I think we can catch him here.