过去分词或现在分词都可以
即done 或 doing
will have been done是将来完成时的被动
如:The museum will have been built by 2010.
到2010年时,这个博物馆就已经盖好了.
will have been doing是将来完成进行时.
如:By the end of next weekend,he will have been learning English for 3 years.
截至到下个周末,他就已经学英语学了三年了~
过去分词或现在分词都可以
即done 或 doing
will have been done是将来完成时的被动
如:The museum will have been built by 2010.
到2010年时,这个博物馆就已经盖好了.
will have been doing是将来完成进行时.
如:By the end of next weekend,he will have been learning English for 3 years.
截至到下个周末,他就已经学英语学了三年了~