3.参考词汇 :集中(注意力) concentrate on
熟练使用了一些长难句;全文结构较为严谨,应适当增加文中衔接词的使用;请作者增加词汇表达的丰富度,且要加强拼写检查;请注意分段。
Nowadays more and more people think that using cellphone is a fashionable and convience to contact with the famaly and friends.While some students take it to the class and sometimes call at class and it is breaking the rules.The others always send messages at class and waste the value time. I sugguest that :the class is the place that make people study,so it is not suitable for people to use cellphone ,it need people to keep silence ,people should not use cellphone in such a quiet class and should fouces on studying.