eaching of multimedia is not an exception ,it has both advantages and disadvantages.РРРIn one hand,teachers can create a relaxed, pleasant atmosphere,which can make a great contribution to improve the interest in learning of ’s more,it can increase the capacity of classroom teaching, helping us to get lots of information which is impossible to be got by traditionally unitary teaching system.РРBut in the other hand, while tri-dimensional teaching offers a more convenient way of studying, it willРРsomehow make students more passive simply because they have no opportunity to speak will not have enough time to have a careful analysis in the class.РРPersonally I think it would be better to integrate the two teaching methods so as to fully utilize their advantages and avoid their disadvantages.