我已经不开心很久了 怎么用英文说？ 文法正确。
好久没有这么开心啦.. 好怀念哦！用英语怎么说？？ Does 好久没有这么开心啦.好怀念哦 Does not have such happily for a long time.Good fondly remembers。I haven't be so happy for a long time，I'm really miss it. 。
英语翻译 Hello，I was quite busy in these days and I'm really sorry for replying you so late.Everything is fine here and how about you？I hope we can keep in touch with each other and wish you happy everyday.
