1) He's been gone too long to have gotten lost.
他失踪太久了
2) He is said to be missing .
据说他失踪了。
3) He talked for ever so long.
他谈了很久很久。
4) He waited as long as his arm.
他等了很久很久。
5) How long ago did he leave?
他走了多久？
6) He has been ill for a long time.
他病了很久了。
补充资料：已经
1.业已经过;业已经历。 2.副词。表示事情完成或时间过去。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条