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Dogs are easy to take care of.动词不定式什么成分

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Dogs are easy to take care of.动词不定式什么成分
Dogs are easy to take care of.动词不定式作什么成分?
to take care of为什么不是to be taken care of
像你这种句子结构: sb./sth. +be+ adj. +to do .中的动词不定式具体作什么成分,还真不好说.

我曾经看到过: 有人把不定式当作结果状语,而有的人认为它是主语补足语.

不管它做什么成分,有一点是确定的.那就是：当不定式与主语构成动宾关系时,

这个不定式必须用主动式表被动意思.

如：本句中就是这样的动宾关系： to take care of dogs

(dogs作 to take care of 的宾语,这就叫动宾关系）

因此此句也可说成： To take care of dogs is easy . (这就是有人把不定式当作主语补足语的原因）.

或：It's easy to take care of dogs .

作为普通的英语学习者,没有必要纠结于这个不定式究竟做什么成份,除非你是语言学家.

只是记住sb./sth. +be+ adj. +to do .这个结构并掌握什么情况下用主动式表被动意思的用法就可以了.
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