what to do next is discussed.
为什么不定式作疑问主语没有主语?
百度看到的例句。
疑问代词或副词(wh-word) + 不定式,本身就具有名词特征,在句中可以作主语、宾语和表语。所以不定式不再需要逻辑主语。例如:
Where to go has not been decided. (作主语)
I don't know when to start.(作宾语)
This is what to eat.(作表语)
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