無法上學的原因
This is to inform the school as to why Mary was absent on Monday, November 28th.
此乃通知校方，瑪莉在11月28日星期一缺課的原因。
inform(v.)通知as to關於absent(adj.)缺席的
She stayed in my office for a large part of the day, due to continual breathing and lung problems.
瑪莉一直都有呼吸和肺部的問題，因此當天需要久留診間。
due to因為continual(adj.)頻繁的breathe(v.)呼吸lung(n.)肺
I also need to inform you that Mary will not be able to attend school for several days,
尚須通知貴校的是：在未來的幾天瑪莉將無法上學，
inform(v.)通知be able to能夠⋯⋯attend(v.)出席
because I need to keep monitoring her health, and may need her to stay in hospital overnight if her condition gets bad, or seems to be worsening.
因為我要持續觀察她的健康狀態，而且如果她的狀態不樂觀或是有惡化傾向，可能要她待在醫院過夜。
monitor(v.)監控overnight(adj.)夜間的condition(n.)狀況worsen(v.)惡化
If you could please give my information to the school nurse, I can go over it again in detail about what is happening with Mary’s case, and what medications she is on, when she needs to take them, and what to do if there is an emergency.
若能煩請貴校將我的聯絡方式交給學校的護士，我就能詳述瑪莉現在的病情及她現在服用何種藥物、何時需要服藥以及如果有緊急狀況時的應變措施。
in detail詳細地medication(n.)藥物emergency(n.)緊急狀況
Thank you for your consideration,
感謝您的關心，
consideration(n.)關心、體貼
Dr. Lee
李醫生