have been后加什么词性

have been后加形容词。与表示职业的名词连用，用来询问或说明某人所从事的职业。
have been：来过；已经。
been：
v.曾经;曾经到过(某地)。
are的过去分词;be的过去分词。
扩展资料。
they have been working on the perfection of the new model
他们一直在努力完善新型号。
none of this would have been possible without their help
如果没有他们的协助，这事没有一样能办成。
what books have been set for the english course
英语课布置要用哪些书。
the plans have been under discussion for a year now
这些计划至今已讨论一年了。
no new sars cases have been reported in the region
该区没有新增非典型肺炎病例。