1) He has been ill for a long time.
他病了很久了。
2) He talked for ever so long.
他谈了很久很久。
3) He waited as long as his arm.
他等了很久很久。
4) He sat thinking for a long time.
他坐着想了很久。
5) Been waiting long?
等很久了吧？
6) How long ago did he leave?
他走了多久？
参考词条