I (加 have) finish(加 ed) my studies in my junior middle school.Now I am glad to be (加 a) student in this famous school.There are many new schoolmates and teachers.(His改为 My) head teacher is a middle-aged man with a pair of glasses.He is very (kindly 改为 kind) to us.We (去掉are) all like him.All the teacher(s) in our class can make their classes (interested 改为 interesting) and lively.We have Chinese,maths,(去掉the) English,physics,chemistry,biology,history,P.E.(最後一样要加 and) computer.I like my new school and I like my new classes too.In this famous and beautiful school I hope to (making 改为 make)many friends and (I can 改为 able to) learn a lot.
已替你更正了,祝你学业猛进!