---I haven't seen Ling Feng for a long time.---He___to Sydne

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---I haven't seen Ling Feng for a long time.---He___to Sydney.(go)
正确答案是has gone,可是我搞不懂这种前面是have的某些形式,后面跟动词过去式的语法,

首先纠正哈,后面跟的不是动词过去式而是过去分词,have后面不跟过去式.你的问题很简单,这儿的has仅仅是单三式,表示一个事实.后面的是完成时,你应该知道.
再问：很不好意思的说一句，我没学过完成时
再答：额…好吧……那这个题目……你们老师怎么给你讲？问问老师去或者看看完成时的语法……

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