求各位高手写封英语道歉信.因为老师是外教,所以希望各位高手能翻译的地道些,内容如下：我以为一个星期只有一节英语课,所以上次英语课我给忘记了,没能按时上课,我保证以为不会再出现这样的问题,希望老师原谅.

I apologise for being absent from previous English class, because I thought there would be only one English class in a week. I ensure that this will not happen again. I beg for your forgiveness. thak ...