英语翻译严禁使用翻译器,我要的是正确语法『我打算下周二去学校找您填写两份推荐信,请提前告诉我您哪天第几节没有课,我好提前

按着你的意思翻译了一下,我自己看了几遍觉得还行,你看看成吧?呵呵...
I intend to find you to fill out two letters of recommendation in the school on next Tuesday. Please tell me in advance when you are leisured and which period no classes that I can prepare this. This year only remained this two school to apply. After National Day I will go to school looking for you to receive. When you finish this two letters please send to me email let me know. I wish you have a Happy National Day.