It’s a nightmare worrying where the children might be.

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/12 04:25:45

It’s a nightmare worrying where the children might be.
worrying 是nightmare 的定语?
还是nightmare做形容词,可怕的,噩梦似的,修饰worrying~

worrying 是动名词.
worrying where the children might be 其实是句子的实际主语,It 只是形式主语,原句是：
Worrying where the children might be is a nightmare.
也可以用不定式：To worry where the children might be is a nightmare.
It's a nightmare to worry where the children might be.
用形式主语,是由于实际主语太长,放在句首的话句子很臃肿,谓语拖在很后面.不利于阅读和表达意思.
担心牵挂着孩子的下落（孩子究竟会在哪儿）,就像噩梦一样折磨着我.

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