Dear Xiao Dong,
A lot of students have your problem,so don't worry.Here is some of my advice.You should still try to communicate with your classmates actively and do not be shy.You should also be friendly to your classmates.When your classmates are in trouble or need help,try your best to help them and show them that you care about them.Similarly,when you have problems,ask your classmates for help.Besides,you can try to invite them out for activities.For example,you can play ballgames with them.In short,you should try to create opportunities to communicate with them.I hope this helps.
Yours,
Miss Wang
很多学生有和你一样的问题,所以不要担心.这里是一些我的建议.你应该尝试主动积极和同学交流而且不要害羞.你应该对你的同学友善.当他们有困难需要帮助的时候,尽你努力去帮他们让他们觉得你关心他们.同样的,当你有问题的时候,向你的同学寻求帮助.此外,你能尝试邀请他们参加活动.譬如,你能和他们一起玩球类运动.简短来说,你应该制造和他们交流的机会.