1、七种时态标志词 一般现在时: often, usually, in the morning/afternoon/evening, every Saturday ,twice a week, on weekends, always, sometimes, seldom, never. 一般过去时: ago, yesterday, the day before yesterday, last-, in 1987, just now, a moment ago. 一般将来时： tomorrow, next week/ year, in an hour / a few days, in the fut
2、ure. ( will / shall +do ) 现在进行时：now, these days, at the moment, Look! Listen! ( be +doing) 现在完成时：already, yet ,recently, lately, before , just, ever, never, so far, ,till now, over the years, in the last/ past 4 years, since + 时间点，for+ 时 间段. ( have / has +done) 过去进行时：at that moment / time , the whole morning , from nine to ten last evening, this time yesterday, at 8 yesterday evening ( was / were+ doing ) 过去完成时：by the end of last year , by the time I got there , - before I got to school ( had+ done )
