[解析]
Dear Mike,
I'm very sorry that I won't be able to keep my appointment to discuss Chinese calligraphy with you due to a change in my school arrangement.I sincerely apologize to you for any inconvenience caused by the unexpected change.(表示歉意并说明原因)
I suggest we put our meeting off from 3 pm this Saturday until the same time next Sunday.Will that be fine for you?Good news is that an exhibition of Chinese calligraphy is to be held this weekend.【高分句型一】Works of some superb calligraphers of all times will be included in the exhibits.It is strongly recommended that you should pay a visit to the exhibition ,which will definitely help you better understand Chinese calligraphy.【高分句型二】(重约见面时间;建议先参观中国书法展)
Looking forward to your early reply.(期盼回复)
Yours,
Li Hua