我最难忘的一件事是学习游泳。

One of the most impressive things is the study of swimming.

youdao

这件事是我最难忘的一件事。

This thing is I am the most memorable thing.

youdao

去年暑假，我去学游泳，那是很难忘也很有趣的一件事。

Last summer holiday, I learned to swim. It was very unforgettable and interesting.

youdao

去年暑假，我去学游泳，那是很难忘也很有趣的一件事。

Last summer holiday, I learned to swim. It was very unforgettable and interesting.

youdao