还是只能用一个be 动词,除非加连词
There are too many inventions invented 是对的
=There are too many inventions （which are) invented
There be 句型里如果要用被动态就要用两次be动词么?
还是只能用一个be 动词,除非加连词
There are too many inventions invented 是对的
=There are too many inventions （which are) invented