初中英语八大时态标志,如now是现在进行时 速度要!!!答:1 一般进行时 be doing 【now, at this time, days, etc. look . listen 】2 一般现在时 do does 【always, usually, often, sometimes, every week (day,year, month…), once a week, on Sundays, (星期后+s 表示每个星期几都要干某事)】3 一般过去式 did 【ago, yesterda...