you had an appointment with your friend last friday. unfortunately, you did not keep the appointment because your mother fell ill at that time. write a letter to your friend to:
1.apologize for not attending the appointment as planned,
2.explain why you could not meet him/her that day,
3.make suggestion for another appointment next time.
i am excessively sorry to say that i had failed to keep the appointment that we made last friday.
now, i am writing you this letter of apology to show my deep regret.
please accept my sincere apology. i hope you will understand me and excuse me for my failure to turn up.
***积累：i am excessively sorry to do …; fail to do …; make an appointment***
***积累： letter of apology***
***积累：excuse … for …; turn up***
the reason for my absence was that my mother fell ill at that time.
i had no way out because i had to send her to hospital and look after her.
therefore, it’s not in my power to meet you.
第一句是本段的中心句，综述写信人出现过失的原因。***积累：the reason for … was that…; fall ill***
***积累：in one’s power***
naturally, i want to suggest that we should make another appointment next time.
i shall be obliged if you will kindly write and tell me when and where you will be at convenience.
we may meet again and i hope to see you soon.
***积累：be obliged; at convenience***