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问个英语问题ifnothingisdonetoprotecttheenvironment,millionsofspeciesthatarealivetodaywillhavebecomeextinct我想问主句中willhavebecome是动词吗?那怎么extinct是宾语吗,它不是形容词吗?形容词能宾语

题目详情
问个英语问题
if nothing is done to protect the environment,millions of species that are alive today will have become extinct
我想问主句中will have become是动词吗?那怎么extinct是宾语吗,它不是形容词吗?形容词能宾语吗?
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答案和解析
becomee有两种词性:及物动词和联系动词.
如:This color becomes you.这颜色适合你.(在这儿是及物动词)
The sky became dark.天空暗下来了.(在这儿是联系动词)
你所说的句子中的become就是作联系动词,因此后面是跟形容词的.
最常见的联系动词是be,即am,is,are,它们后面不是可以跟形容词吗?