1.Our teacher says ," talk not in class ,please"
->Our teacher says,"Don't talk in class'please"(câu yêu cầu,đề nghị không làm gì,đầu câu là Don't,ví dụ:Don't talk!)
2.There aren't some shops in our street.
->There aren't any shops in our street.(câu phủ định dùng any)