I am in Class3,Grade7(反意问句)急急急~

hello everyone,first let me introduce myself to you.My name is qiangwei ,I am in class3 grade 1,i a请翻译中文 I am in Class3,Grade7(反意问句)急急急~ 各位高手可以帮我看看我写的英语作文有没有语法错误?作文如下：IHello,I am xxx(名字）.I am a girl.I am come from China .I am a student.I am in No.8 middle school ,I am in class3 grade 7 .I like astronomy .I think it is ver i am in grade eight,not grade seven. I am in Grade Six.划线部分提问.Grade Six i am in grade seven?复数是什么 I am in grade （）填什么 I am in Class Two,Grade I am in grade Eight.LinHua is in Grade Eight,tI am in grade Eight.LinHua is in Grade Eight,too.We are in the s________ grade 我的背包在我的床上 I am in Class3,Grade7（否 一般） What grade am I Hello!My neme is什么.I am in Class3,Grade7.I'm a 什么 是作业本第39页 My name is Eric.I am in Class3,Grade7.I want to be a member of your c() i am in grade eight,not grade seven.那are you in geade seven 怎么回答? Sally is in grade one.i am in grade one to（ ）and （ ） are I am a student in Grade five. 划线 in Grade five 提问,怎么做啊? I am in Grade Eight.对Eight提问 I am in Grade Seven.对Geade Seven提问