YOU SAID:

Grammar does matter sometimes

INTO JAPANESE

文法は時々 問題では

BACK INTO ENGLISH

The grammar is sometimes a problem

INTO JAPANESE

文法は時々 問題です。

BACK INTO ENGLISH

Grammar is sometimes a problem.

INTO JAPANESE

文法問題があります。

BACK INTO ENGLISH

There are grammar issues.

INTO JAPANESE

文法問題があります。

BACK INTO ENGLISH

There are grammar issues.