在他的帮助下，我取得了很大的进步，并且赶上了我的同学们。

Under his help, I made great progress and caught up with my classmates.

youdao

在他的帮助下，这些同学取得了很大的进步。

With the help of him, these students have made great progress.

youdao

在他的帮助下，这些同学取得了很大的进步。

With the help of him, these students have made great progress.

youdao