there's been读的时候可不可以读成there Z been,而不是there ReiZ been

there's been读的时候可不可以读成there Z,而不是there ReiZ there have been 的用法 there has been的用法 been there,done I have been there There is been amistake have been there have you been there? been there done that . have been there 中文 There has been和 Therehave been there has been...为什么要加been?