大家好,小榜来为大家解答以上的问题。过去完成时的标志词，完成时的标志词这个很多人还不知道,现在让我们一起来看看吧！

1、already（肯定）, yet（否定。

2、疑问）, just, before, recently,still, lately,never,ever, never, twice, on several occasion,in the past few days/weeks/months/years,(up to)these few days/weeks/months/years, this morning/week/month/year, just, up to present, so far,up to now,till now,since+时间。

本文到此分享完毕，希望对大家有所帮助。