Dear Mike,
How are you?I am your best friend,LiKe.I am writing this email to invite you to take part in English Activity.It will take place at our school at begin 14 :00 pm.It can help you make friends and make you realize your self-worth.In addition,it can let you learn about many English Activity words,and it can make you happy.What's more ,you can spend more time with some English teachers and friends .The activity will last for four hours,form 14:00 pm to 16:00 pm.
I really hope you can come and join us.I am looking forward to your early reply.I wish you and your family good health and happiness.