时态的标志性词语

一般现在时：often,usually,always,sometimes,every day,never,sldom等频度副词。注意：every day合在一块写是形容词！

一般过去时：ago,yesterday,last,just now等短语

现在进行时：now,at this moment,these days,at present,right now,at this moment

现在完成时：already,yet,now,just,by this time,today,this morning,this week,recently,lately,since then,often,(ever)since,before,ever

过去完成时很多都是短语

过去进行时：then,at that time,this time yesterday

一般将来时：next time,tomorrow,in the future

有很多词可以用在很多不同的时态，需要根据文章来定。