英语所有时态形式,副词作用答:例如: 1)I have just finished my homework. 2)Mary has been ill for three days. (2)常与现在完成时连用的时间状语有:since, for, during, over等引导出的短语;副词already, yet, just, ever, now, before, often, lately, recently等;状语词组this week (morning, month, year), so far, up to ...