It's quite important _(for)us(to protect) the wild animals.As water is important (to )our envioronment.两个句子有什么区别?for to

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通常情况下,for somebody,其它内容用to

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我在补充一下,To 一般表目的,而for可理解为“对于谁谁来说”

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dosth.不定式前用for,