可爱的同学们:你们好!你们一定奇怪,今天的课怎么不见曹老师了?怎么是郭老师来上这节课?疑问就是一种动力,一种可以在你们心灵中激起情感波澜的动力。其实有这样的开头,你们现在已经可以围绕这个疑问开笔写作了。因为我有事要外出,但我又不想让在同学们当中刚刚点燃的希望之火有减弱的迹象,所以写这封信,以这样的方式与你们见面,作为我们这次主题作文的一个由头,也作为这一课的一 Cute classmates: How are you! You must be strange, how do you not see Teacher Cao today? How is Mr. Guo coming to this class? Doubt is a kind of motivation, a kind of motivation that can arouse emotional turmoil in your heart . In fact, there is such a beginning, you now can write a pen around this question. Because I have something to go out, but I do not want to show signs of weakening the fire of hope just ignited among my classmates, so to write this letter and to meet with you in such a way as a source of our essay, Also as a lesson in this