Hello!everybody!
I;m (名字).I'm from ( )Primary School.I ;m so happy to become a member of Class1,Grade 7.I like music and painting.And I like to make friends with you,what about you?
Thank you !
大家好!
我叫…….我毕业于……小学.我很高兴成为七年级一班的一员.我的爱好是音乐和美术,我喜欢交朋友,你们愿意和我做朋友吗?
（具体情况根据你实际修改一下,你要是有中文底稿发来就好了）