额，抱歉，你可能要重写。
以下是我建议的Email：
Hi Brian,
How are you?Hope you're fine.
I saw an advertisement for a charity programme.I would like to invite you to go with me.The date is 19 February,Sunday and the time is 10 a.m.The venue is at Joy Senior Citizens Centre.There are lots of activities there such as sing-along session,folk-dancing performances and play some interesting games.You may bring some gifts such as snacks and toiletries for the elderly.
That's all.Hope you can come with me.
Your friend,
XXX
*********
谢谢！
