YOU SAID:

this is a good course to study

INTO JAPANESE

これは勉強する良いコースです。

BACK INTO ENGLISH

This is a good course to study.

INTO JAPANESE

これを勉強する良いコースです。

BACK INTO ENGLISH

It is a good course to learn it.

INTO JAPANESE

それを学ぶ良いコースです。

BACK INTO ENGLISH

It is a good course to learn it.