Question

by the time都有什么意思、用什么时态？

Answer 1

举例说明
可用于过去完成时和将来完成时
1.I
had
finished
the
work
by
the
time
he
came
back
2.We
will
have
finished
the
work
by
the
time
he
comes
back
正如上面所举的所举的
是要用完成时
但需注意
句子前后时态应保持一致

Answer 2

举例说明
可用于过去完成时和将来完成时
1.I
had
finished
the
work
by
the
time
he
came
back
2.We
will
have
finished
the
work
by
the
time
he
comes
back