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421-in my opinion, peer reversion is a good oppurtunity to check our's writing mistakes. while most of time, it could be a little difficult for us to do peer reversion because we usually contain similar writing habits and even the similar writing mistakes. so, i really agree that the teacher to supervise us and provid us professional and accuracy guideness.

433,hence peer revision is just privide a platform that each student could freely communicate with each other,if we want to further discover problems and understand how to rectify it ,we need teacher's introductions

433: in my opinion,peer revision is quite efficient ,it can reduce teacher'burdan substantially,it can also improve the ability of writting among students with an extent,but we are not so preficient at revision ,sometimes wo dont know how to express what we feel like to say

433thereby peer revision probably only to find some superficial problems whereas if we feel like to achieve more practical suggestions ,we shou consult teachers ,for they are of many relative experiences for many years,so peer revision should be supervised

i think peer revision is a great idea, which can definitely help students study easier and happier, and even it gives teachers more chances to get to know their students.

However, guidelines and supervision from teachers are also essential. Because teachers can help peer reviewers know what to look for and what kinds of fesdback will be most helpful.