按时上课英语翻译为：attend classes on time。

attend：v.出席;参加;经常去，定期去(某处);注意;专心；

第三人称单数： attends现在分词： attending过去式： attended过去分词： attended

扩展资料

Children must attend school between the ages of 5 and 16.

5到16岁的孩子必须上学。

The students all attended, bar two who were ill.

除了两名生病，所有的学生都到了。

For certain personal reasons I shall not be able to attend.

由于某种个人原因，我将不能出席。