学会以下几种表达，基本可以应付口语中的“好久没…”了
用例1：
我的天，我好久没去上课了。
God, I have not been to class for ages.
注：have not been to不曾到过
用例2：
好久不见你了，这些天你去哪儿了？
(I) haven't seen you for ages. Where have you been all these days?
用例3：
我们好久没玩那个了。(如打球，打游戏等任何事情)
We haven’t done that in a while.
注：in a while一段时间；一会儿；一阵子
用例4：
好久没跟你聊天了，约翰。
It’s been a while since we talked to each other, John.
注：It’s been a while since自从…以来已经有一阵子了
用例5：
好久没见人用算盘了。
It's been a long while since I saw someone using a Chinese abacus.
注：see sb. doing sth.看见某人做某事
用例6：
我很久没有发帖了。
It's been a while since I updated.
用例7：
自从上次看到你，已经好久不见了。
It has been a while since I last saw you.
用例8：
确实有很长一段时间没写博客了，有时候太忙了很容易就忘了更新。
It has been quite a long while since I wrote my last blog. Sometimes when things get busy it's easy to forget to renew.
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