YOU SAID:

He started retreating and reading every treatise on the shelf

INTO JAPANESE

彼は棚の上のすべての論文を後退して読み始めました

BACK INTO ENGLISH

He began reading back all the papers on the shelf

INTO JAPANESE

彼は棚の上のすべての論文を読み返し始めました

BACK INTO ENGLISH

He began to read all the papers on the shelf

INTO JAPANESE

彼は棚の上のすべての論文を読み始めました

BACK INTO ENGLISH

He began to read all the papers on the shelf