I could come next week, or the week after.
His people loved and remembered him for centuries after.
【答】英语中,有的“小品词”既是介词又是副词,身兼两职。区分的办法很简单:有宾语时是介词,无宾语时是副词。
你问的两个句子中的after,都是副词。当然,为了更好的理解句子意思,可以看作其后省略了已知的有关宾语。如:
I could come next week, or the week after.
= I could come next week, or the week afternext week.
His people loved and remembered him for centuries after.
=His people loved and remembered him for centuries afterhis death.
既是介词又是副词的“小品词”一览:
above
about
across
along
around
before
behind
below
besides
by
on
over
out
outside
off
down
in
near
since
past
round
through
under
up
beyond