YOU SAID:

James while John had had had had had had had had had a better effect on the teacher.

INTO JAPANESE

ジョンがいた間、ジェームズは先生により良い影響を与えました。

BACK INTO ENGLISH

James had a better influence on his teacher while John was there.

INTO JAPANESE

ジョンがそこにいた間、ジェームズは彼の先生により良い影響を与えました。

BACK INTO ENGLISH

James had a better influence on his teacher while John was there.