英语人教版八年级下册Grammer focus.ppt

《英语人教版八年级下册Grammer focus.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit8Unit8HaveyoureadTreasureIslandyet?SectionA3Grammarfocus-4cRevisionReadthefollowingsentenceswehaveseen.HaveyoureadLittleWomenyet?Yes,Ihave./No,Ihaven't.HasTinareadTreasureIslandyet?Yes,shehas.Shethinksit’sfantastic.Haveyoudecidedwhichbooktowriteaboutyet?Yes,Ihave.I’vealreadyfinishedreading

2、it.Itwasreallygood.构成现在完成时是由“”构成的，。have/has+动词的过去分词句式1.肯定句：主语+have/has+过去分词(+其他)2.否定句：主语+have/has+not+过去分词(+其他)3.一般疑问句：have/has+主语+过去分词(+其他)4.特殊疑问句：特殊疑问词(不是句子主语)+have/has+主语+过去分词(+其他)2)特殊疑问词(是句子主语)+have/has+过去分词(+其他)用法1.表示过去发生或已经完成的某一动作对现在造成的影响或结果。e.g.–Haveyouhadyourlunchyet?–Yes,Ihave.I’vejus

3、thadit.(现在我不饿了。)现在完成时e.g.Ihaven’tseenherthesedays.I’veknownBobforthreeyears.already,yet,just,ever,never,before时间状语一、过去式和过去分词的变化相同规则变化：1.一般在动词词尾直接加ed。如：pick→picked→picked;wish→wished→wished;stay→stayed→stayed2.以不发音的e结尾的动词后面加d。如：like→liked→liked;hope→hoped→hoped;phone→phoned→phoned3.以“辅音字母+y”结尾的

4、动词，变y为i，再加-ed。如：study→studied→studied;hurry→hurried→hurried;reply→replied→replied4.词尾只有一个辅音字母的重读闭音节动词，要双写辅音字母，再加-ed。如：stop→stopped→stopped;clap→clapped→clapped不规则变化：5.以不变应万变。如：let→let→let;put→put→put;read→read→read6.若中间有双写e，则去掉一个e，单词末尾再加t。如：feel→felt→felt;keep→kept→kept;sleep→slept→slept7.结尾的字

5、母d变t。如：lend→lent→lent;build→built→built;send→sent→sent8.变为以-ought或-aught结尾。如：buy→bought→bought;bring→brought→brought;catch→caught→caught;teach→taught→taughtalready和yet都可以作为现在完成时的标志词，但它们的用法不同。◆already一般用于肯定句中。如：Wehavealreadycleanedupourclassroom.注意：already用于疑问句中时通常表示惊奇。如：Haveyoufinishedyourhome

6、workalready?Ican’tbelieveit.◆yet一般用于疑问句和否定句中。如：Haveyouseenheryet?Thebushasn’tcomeyet.用yet和already填空1.Haveyouwashedyourhands______?—Yes，I‘ve______washedthem？2.Haveyou______lockedthedoor?）—Not_______3.HasJonecome_____?—Yes.Hehas_____beenherefor10minutes.A.yet;alreadyB.already;yetC.yet;yet1.Ifyou

7、readalot,yourlifewillbefull___pleasure.A.byB.ofc.for2.MayIhavearest?Ihavealreadyfinished____thetask.A.writeB.writingC.towrite3.—WhyisMr.Yangstillintheteachers’office?—Maybehe________hisworkyet.A.doesn’tfinishB.hasn’tfinishedC.haven’tfin