only then ...the importance of learning englishA did i realize B have i realizeed 好多句子都分不清要用do还是 have 该怎么区分呢?

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only then ...the importance of learning englishA did i realize B have i realizeed 好多句子都分不清要用do还是 have 该怎么区分呢?
only then ...the importance of learning english
A did i realize B have i realizeed 好多句子都分不清要用do还是 have 该怎么区分呢?

only then ...the importance of learning englishA did i realize B have i realizeed 好多句子都分不清要用do还是 have 该怎么区分呢?
A ,这里的do 和 have是时态上的区分,这句话的意思是,直到那个时候我才意识到学习英语的重要性.then决定了用一般过去时,而have realized是现在完成时,这个句子是以only开头的倒装句,属于部分倒装.

will we know