“给我印象最深刻的”用英语怎么说？

The most impressive to me

I went to the Great Wall with my friends last summer. It was a beautiful day. The sun was shining, the birds were singing. We walked on the wall for about two hours. We took lots of photos. Then we met a group of foreigners. They let us to help them take photos. We were really glad to help them. We also took photos with them and talked with them in English. We told them the history of the Great Wall. They were very surprised because we could speak English so well. We felt very happy that day.

我去年夏天和朋友去了长城  ，那是美好的一天，太阳高升，鸟儿欢唱，走上长城用了两个小时左右，我们拍了很多照片，然后我们见到了一群外国人，他们让我们帮助他们拍照，我们也和他们拍了照，并且用英语进行了交流，我们像他们介绍了长城的故事，他们很惊讶，因为我们的英语可以说得这么好。 那天我们感到十分开心。