we are in the same school,but in different grades.“grades”为什么要加s

We are in the same grade翻译 We are in the same company We are in the same class.We are c____ we are in the same school,but in different grades.“grades”为什么要加s we are in the same circumstance还是we are in the same circumstances? we are the same we are in the same school还是we are in a same school为什么? are you in the same class?yes,we are---------------- We go to the same school ,but We are not in the same class. we are not in the same class.we are not in the different clsses.class We are in the same grade变成一般疑问句 we are in the same grade (改为否定句） are,we,in,same,the,grade.连词成句 We are in the same school.(变一般疑问句） we are in the same class.改为否定句 we are in the same boat 的翻译 we are in the same class.怎么改成一般疑问句? We are not in the same grade 同意句改写