你好
第一句是错的.应该把to去掉就对了.
need not do sth不需要做某事,就等于：don't need to do sth
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祝你学习进步,更上一层楼!
不明白请及时追问,满意敬请采纳,O(∩_∩)O谢谢~~还有个问题In my opinion, students should not talk in the classes. 是等于I think students should not talk in the classes. 还是I think that students should not talk in the classes.啊？句子都是对的噢， that在从句中不做任何成分,只是宾语从句的连接词，可以省略。所以三个句子都表达同个意思。谢谢，能不能说Therefore, in myopinion, students should not talk in the classes.They do not need to take physical education classes because they have done enough exercise from the basketball game. 这句话有错吗have done 改为 can get