The conservation group said half the mammals that
have become extinct globally in the last 200 year have been Australian species.在that引导的定从中真正的动词是什么?是have become 还是have been.如果是其中一个那另一个在句中做什么成分?请高手指教下.
人气：245 ℃ 时间：2019-10-25 07:58:26
解答
这个句子里面有两个从句,have become是定语从句的动词,have been是宾语从句的动词.主句：主语conservation group, 谓语said,said后面到句子结尾是从句做宾语.宾语从句的主语是half the mammals,系动词have been,表语...
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