*现在完成时
1.Ihavesatforhoursintheclassroom,readinganovel.
2.Theweatherhasbeencoldsofarthiswinter.
3.Ihaven'tfinishedmyhomeworkyet.
4.Hehasjustcome.
5.Hashevisitedthecitytwice?
6.Haven'tseenyouforalongtime!
7.Wehaven'theardfromhersincelastweek.
8.Hehasalwayssaidso.
9.They'vebeentoBeijingtwice.
10.--WhereshallIsayyouhavegoneifLiPingasksforyou?
--SaythatIhavegonetoBeijing.
*过去完成时
1.IhadstayedinBeijingforthreeyearsbythen.
2.Untilthenhehadknownnothingaboutit.
3.Theboytoldhismotherthathehadbeenillsincehecamebackfromtheschool.
4.ShehadonlybeenherefortenminuteswhenJimcamein.
5.Whentheygottothefield,thefootballmatchhadalreadystarted.
6.HehadlearnedtwohundredEnglishwordsbytheendoflastterm.
7.HesaidhehadlearnedtwohundredEnglishwordsbytheendoflastterm.
8.Hesaidhehadseenthefilmtwice.
9.Ihadhopedtobeabletotakemyseatinallthisnoisewithoutbeingseen,butthatmorningtheroomwasquietandorderly.
10.Afterhefinishedhishomework,hewenttobed.