YOU SAID:

A syntax error is like bad grammar in a sentence.

INTO JAPANESE

構文エラーは、悪い文法、文のようです。

BACK INTO ENGLISH

The syntax error is like bad grammar, and sentence.

INTO JAPANESE

構文エラーは、悪い文法と文のようです。

BACK INTO ENGLISH

The syntax error is like bad grammar and sentences.

INTO JAPANESE

構文エラーは、悪い文法や文章のようです。

BACK INTO ENGLISH

The syntax error is like bad grammar and sentences.