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1、Unit10I'vehadthisbikeforthreeyears.SectionAgrammarfocusYardsaleGuessandfastanswering(搶答)1.Whendopeopleusuallyhaveyardsales?A.OnweekdaysB.Onweekends2.Whyarethesalescalled"yardsale"?A.TheysellattheiryardB.SoundsgoodGameGuessandfastanswering(搶答)3.Whatkindofthingsdopeoplesellinayardsal
2、e?A.Somethingtheydon'tneedanymore.B.Somethingtheythinkimportant.4.Whydopeopleliketobuythingsinayardsale?A.Becausethethingsareverycheep.B.Becausethethingstheycan'tbuyinotherplace.GameWearehavingayardsale,let'stalkaboutthethingswewillsell.4aRewritethesentencesusingfororsince.JimisinJ
3、apan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhaven’teatenfortenhours/sincetenhoursago.JimhasbeeninJapanforthreeyears.3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince200
4、9.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.4bFillintheblankswiththecorrectformsoftheverbsinbrackets.I_______________(neverbe)tothewaterparkbefore.Iwantto_____(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey___
5、________(alwayswant)tohaveadog.haveneverbeengohaveneverownedalwayswant3.We_________(have)apianosincelastNovember.We_______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy____________(notbe)backtotheirhometownfortwoyears.They______(miss)theirhometownalotandhopetovisi
6、ttheplacenextyear.havehadboughthaven’tbeenmissverymuch5.Thismuseum_________(be)hereforover20years.It_____(be)oneoftheoldestbuildingsinthissmalltown.hasbeenis現(xiàn)在完成時表示從過去一直持續(xù)到現(xiàn)在的動作或狀態(tài)，并可能還將持續(xù)下去。簡稱“延續(xù)用法”.現(xiàn)在完成時1）常與for,since引導(dǎo)的時間段的時間狀語連用.since,for的用法:2）動詞使用延續(xù)性動詞。此用法需注意兩點(diǎn)：因?yàn)樗查g動詞在肯定句、since
7、:(自…以來)1)since+時間點(diǎn)He?has?stayed?heresince?5?o’clock.2)since+時間段+agoHe?has?stayed?heresince?5?hours?ago.疑問句中不能和時間段連用.語法精講3)since+從句(句子要用一般過去時態(tài)）She?has?taught?Englishsinceshe?came?here.for:(長達(dá)）for+時間段Hehaskeptthebookfor2weeks.since＋一段時間＋ago＝for＋時間段;sincetwoweeksago=fortwoweeks;Ihavek
8、eptthelibrarybookforaweek.
