l have been a friend with Li Ming since we went to primary school .
问题描述:
l have been a friend with Li Ming since we went to primary school .
里面这个have been 是什么语态?
答
现在完成时,结构为have/has+动词过去分词 可以表示动作已经完成,强调对现在的影响现在完成时的标志词为“never,just,already,yet,before,for+时间段,since+时间点,lately/recently,so far/up to now/up till now”be...