一般現(xiàn)在時用動詞原形或第三人稱單數(shù)形式.標志詞有：every day,evry Sunday,often,always,usually,sometimes ,on Sundays,on weekdays等等.
現(xiàn)在進行時am/is /are+v-ing形式.標志詞：now,at the moment Look!,Listen!
一般過去時用動詞的過去式.標志詞有：yesterday,last week ,last month,last year,two years ago.
一般將來時用will +v(原形）.標志詞：tomorrow,in the future,next week ,next Sunday.
過去進行時：was/were+doing 標志詞：at that moment,at this time of yesterday,at eight last night.
過去將來時：would +do 沒有什么標志詞,通常用在從句里.
現(xiàn)在完成時：have/has+動詞的過分詞.標志詞：ever,never,since,already,yet,before.twice,once ,three times.
過去完成時：had+動詞的過去分詞.此時態(tài)是發(fā)生在過去的過去,就是在過去之前發(fā)生的事.通常用在從句里.有時也有標志詞：by the year 2000.