had been 和 Having been 区别?____ by an American university , I finally flew to XX on August 1, 1988Having been invited / Had been invited为什么选后面一个?
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![had been 和 Having been 区别?____ by an American university , I finally flew to XX on August 1, 1988Having been invited / Had been invited为什么选后面一个?](/uploads/image/z/11742052-4-2.jpg?t=had+been+%E5%92%8C+Having+been+%E5%8C%BA%E5%88%AB%3F____+by+an+American+university+%2C+I+finally+flew+to+XX+on+August+1%2C+1988Having+been+invited+%2F+Had+been+invited%E4%B8%BA%E4%BB%80%E4%B9%88%E9%80%89%E5%90%8E%E9%9D%A2%E4%B8%80%E4%B8%AA%3F)
had been 和 Having been 区别?____ by an American university , I finally flew to XX on August 1, 1988Having been invited / Had been invited为什么选后面一个?
had been 和 Having been 区别?
____ by an American university , I finally flew to XX on August 1, 1988
Having been invited / Had been invited
为什么选后面一个?
had been 和 Having been 区别?____ by an American university , I finally flew to XX on August 1, 1988Having been invited / Had been invited为什么选后面一个?
had been是过去完成时,having been是现在完成进行时.
《过去完成时》是过去某个时间做的事,并且已经做好.
《现在完成进行时》是可能是过去开始的,但是持续到现在才完成或者还在进行.
这句中有具体的时间,是过去已经完成的事,所以选过去完成时.