There will come a time + when(during which)引導的形容詞子句          .....的時間將會到來

上述句構為倒裝句,真正的主詞是 a time ,而 will come 則為完全不及物動詞,句首 There 為表地方副詞,此處並無意義.

類似句構:

Here comes Mary.

例:

Soon after you get married, there will come a time when you are likely to have quarrels with your wife.

例:

As the owner or potential owner of a small business, there will come a time when you need more capital, so you'll start thinking about borrowing money.