-(跟介词“于”加代词“是”相当)here;herein:
Hermindiselsewhere.;Sheisabsent-minded.她心不在焉。
Thereisnogreatercrimethanthis.罪莫大焉。
-(哪里;怎么)how;why:
Howcanyoucatchtigercubswithoutenteringthetiger'slair?;Nothingventure,nothinghave.不入虎穴、,焉得虎子?
HowcouldIpossiblynotgo?焉能不去?