*patut tiada yang bertanya.. muahahahaha .. ini baru lecturer masa hadapan.. :D 

Please do not ask the following types of questions in your e-mail (although they are appropriate for office hours):

• Here is my understanding of X. Am I right (or is this correct)?
  (You can do this for just about everything and in many different ways. I do not have the bandwidth to deal with too many questions like this.)
• I don't understand X. Could you explain X to me?
  (It's your responsibility to come to lectures and ask questions during lectures if there is something you do not understand.)