1#Due to the risk of viruses, student are not allowed to bring in and use their own disks or Cds.
2#Due to the risk of visuses, student may not allowed to bring in and use their own disks or Cds
Could any one help me to find the difference between these sentences???
" are not allowed " is passive voice.
Students are not allowed.
"May not be allowed " is passive voice.
Students may not be allowed.
"may not allowed" is not right. After the modal verb, you should use "the base form of verb".
In this case you must use passive voice : students are not allowed by the teachers.