问题标题:
()thattheyhadmadeanimportantdiscoveryinscienceLittletheyrealizedTheyhadrealizedlittleLittledidtheyrealizeLittlehadtheyrealized能详细解答吗?
问题描述:

()thattheyhadmadeanimportantdiscoveryinscienceLittletheyrealized

TheyhadrealizedlittleLittledidtheyrealizeLittlehadtheyrealized

能详细解答吗?

陈骏回答:
  Littledidtheyrealize   副词在句首要倒装(little)   hadmadeanimportantdiscovery是过去完成时,前面要用一般过去时(did)   所以就是第二个啦~
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