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If I were to be a father of...,I would die.were to 作什么成分?请分析

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If I were to be a father of...,I would die.were to 作什么成分?请分析哪是主,系,
If I were to be a father of...中 were是助动词,be是系动词,a father of...是表语
【If I 主语were系动词 to be a father of...,表语】条件状语从句【I主语 would die谓语】主句.
哪个对呢?
If I were to be a father of...,I would die.were to 作什么成分?请分析
e to do sth中be为助动词.
be to do sth,可表示下列内容:
①表示计划、安排或相约、商定.这种用法也可以说成是一种将来时态表达法.
There is to be a meeting this afternoon.
We are to meet at the school gate at seven tomorrow morning.
②表示命令.“应该、必须”
You are to explain this. 对此你要做出解释.
He is to come to the office this afternoon. 要他今天下午来办公室.
你说的句子为虚拟条件句,是对将来的虚拟假设,谓语有一种形式使用were to do sth,如:
If you were to come tomorrow,I might have time to see you.你如果明天来的话,我或许会有时间见你.
If I were to be a father of...中 were是助动词,be是系动词,a father of...是表语.
再问: 怎么有的同学说WERE是系动词?were系动词 to be a father of... ,表语。??
再答: were帮助后面的to do或to be构成虚拟的将来,这是助动词的用法。