求英文达人用英文三百字回答这个问题

看看这个行不行，如果可以记得给我加分哦！！！
PowerPoint presentations can be used in many ways in the ESL classroom as well as in other classrooms. Presentations can be used for initial teaching, for practice and drilling, for games, for reviews, and for tests.
Initial Teaching
PowerPoint can be used to teach new ideas and concepts to students. In theory this sounds very good; however, in practice this can be tricky. The teacher must anticipate areas of misunderstanding and difficulty. Once the teacher knows the troubles, which the students will face, he or she can create or adapt a presentation for the students. The presentation must be clear and uncluttered. It should address anticipated areas of student difficulty in an orderly manner. This type of presentation is difficult to prepare, but it can be done. Once an initial teaching presentation is prepared, it can be saved and used again and again, and it can be shared with others.
Practice & Drill
I have used PowerPoint prese