嘿嘿,我试试哦,
1.She was in a middle school last year
否定:She was not in a middle school last year
疑问:Was she in a middle school last year
2.不对,改:Next her sister will be your teacher.
疑问:Will her sister be your teacher next year?
否定.Her sistet won't be your teacher next year ,嘿嘿,好久没学英语了,大学都快毕业了么,希望可以帮到你!