Dear Li Ming & Li Hua,
I'm here at your home I want to invite you to join us in our picnic,but you happen to be out,so I have to write this note to you.
Our Class is planning to go to Zhongshan Park for picnic.Our schedule is gathering at the gate of school at 6:30AM,and then setting off at 7:00 by school bus.Please bring your own lunch as well as camera at that time,and we also go to the cinema at that afternoon.We will return at 4:00PM.Anyway,pleas call me at 3843396 since you guys are home.
Yours
Lu Wei
这应该是初中的英语作业吧,就算得不到满分,80％的分值应该是没有问题嘀!其实小朋友,你真正给你的外国朋友留便条,第一段话不用写的,根本就是废话.也别用Dear什么的,反正我是没有看到老外在非正式信件中用dear的,一般都是Hi 谁谁,不说这么多了,以后你慢慢学吧