I remember the day I first arrived at university. My parents and I drove for hours before we finally got there. I was excited and nervous about starting a new life. As soon as we arrived, I went straight to my dormitory to put my things down. But when I open the door, I found out my roommate had already arrived. She was a kind girl and we got along well right away.
The next day, I had my first class. I was nervous because I didn't know anyone in the class. However, the teacher was very friendly and made me feel welcome. During the class, he talked a lot about the subject and gave us some useful advices. After class, I met some other students and started to make new friends.
Over the next few weeks, I adapted to the new environment quickly. I joined a few clubs and participated in some events. But one day, I forgot my student ID card at the library. I was worried because I needed it to enter the library and for other things too. I went back to the library to look for it, but I couldn't find it. Finally, a librarian helped me and I found my ID card.
答案解析：
1.错误：when I open the door
更正：when I opened the door
解析：描述过去的事情时，应使用过去时。
2.错误：gave us some useful advices
更正：gave us some useful advice
解析：“advice”为不可数名词，没有复数形式。
3.错误：Over the next few weeks, I adapted to the new environment quickly
更正：In the next few weeks, I adapted to the new environment quickly
解析：在描述接下来的一段时间时，使用“in”比“over”更为常见。
4.错误：But one day, I forgot my student ID card at the library
更正：One day, I forgot my student ID card at the library
解析：前句并没有提及与前文相反的情况，因此不需要使用“But”。
5.错误：I went back to the library to look for it, but I couldn't find it
更正：I went back to the library to look for it, but unfortunately, I couldn't find it
解析：加入“unfortunately”使句子表达更加完整，强调了作者找不到ID卡的沮丧情绪。
6.错误：Finally, a librarian helped me and I found my ID card
更正：Finally, a librarian helped me, and I found my ID card
解析：在并列句中，使用逗号分隔两个完整的句子更为常见。
7.错误：无
更正：在“I remember the day I first arrived at university.”后添加“It was an important milestone in my life.”
解析：为了增加文章的深度和连贯性，可以在文章开头添加一句描述这个日子重要性的句子。
