1、The boy with glasses is my younger brother.
戴眼镜的男孩是我弟弟.
2、应该说what happened?和What's happening?
3、直接last Sunday ,不需要介词修饰
4、不要双写n的直接是opening,因为open的重音在前,一般重音在后的单词才需要双写,比如说equipped,重音在后
5、mine
6、What a good cook she is!
7、why not go sightseeing?
8、与某人一起玩 play with sb（某人宾格）
各种人称的宾格见
9、It's going to rain soon.
详解见
10、Please help me.
11、himself
12、tell sb to do sth
13、no one is better at maths than Jerry.
16、不加介词,直接yesterday morning