中文部分：
1. 朋友和他的家人晚上请客吃了一顿饭,算是中秋节的聚餐,很感动；
2. 我花费了很大的经历才将这周的AP（一门课程）的quiz完成了60%；
3. NE（一门课程）再网上看了中文的视频之后,我终于对“VLSM”（这门课的一个知识点）有了一点概念.
你的翻译：Hello 又是我啊,下面是我给你更正.
1. One of my friend(friends "of" 之後要用复数) and his family invited me (having 前面是动词要用 to have) a dinner together(应加上with them) tonight, it could be seen as a Mid-Autumn dinner and made me very appreciated it. (这句的表达上并不正确,所以我替你重写如後: we could call it just a dinner gathering of the Mid-Autumn festival, which made me most appreciated. )
2. I spent a lot of energy and (加could) only finished(could 之後要改为finish) 60% in the quiz of AP this week;
3. After watching Chinese language online video of NE, I finally got some basic idea(s) about VLSM.