請問以下有咩字眼知道係咩時式??

pasr tense有:yesterday,ago,last night,last week,just now,since,yet,last year.
present tense有:always,every....,usually,to後面用現在式,
present continuous tense有:now,this moment,this....,look,listen.
past continuous tense有:while,when,yesterday evening,

past tense:yesterday,...ago,Once upon a time........