英语人教版八年级下册Unit8 Grammar Focus.ppt

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1、Unit8HaveyoureadTreasureIslandyet?SectionAGrammarFocus现在完成时态presentperfectGrammarFocusHaveyoureadLittleWomenyet?Yes,Ihave./No,Ihaven't.HasTinareadTreasureIslandyet?Yes,shehas.Shethinksit'sfantastic.Haveyoudecidedwhichbooktowriteaboutyet?Yes,Ihave.I'vealreadyfinishedreadingi

2、t.Itwasreallygood.现在完成时1.过去发生的动作对现在造成的影响或结果。和already，never,ever,just,before,yet等状语连用。2.过去已经开始，持续到现在的动作或状态，将来还有可能继续下去常与for或since引起的一段时间状语连用。hadbreakfastIhavejusthadmybreakfast.(现在我不饿)I’mnothungrynowmovedherein2004IstilllivehereIhavelivedhereforthreeyears.Ihavelivedheresince2

3、004/threeyearsago.nowpast现在完成时构成助动词否定一般疑问结构：主语+have/has+动词的过去分词结构：主语+haven't/hasn't+动词的过去分词结构：have/has+主语+动词的过去分词...?肯：主语+have/has否：主语+haven't/hasn't特殊疑问词+have/has+主语+动词的过去分词...?特殊疑问翻译：她住在北京已经五年了。肯：ShehaslivedinBeijingforfiveyears.否：Shehasn'tlivedinBeijingforfiveyears.一般疑问H

4、asshelivedinBeijingforfiveyears?Yes,shehas.No,shehasn't特殊疑问：ShehaslivedinBeijingforfiveyears.(对红色字体提问)HowlonghasshelivedinBeijing?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→hop

5、ed;phone→phoned→phoned3.以“辅音字母+y”结尾的动词，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

6、。如：feel→felt→felt;keep→kept→kept;sleep→slept→slept7.结尾的字母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→taught1Writetheformsofthepasttenseandpastparticiple:drink___________

7、_see____________find____________leave____________tell____________drankdrunksawseenfoundfoundleftlefttoldtold(1).for+表示一段时间的短语(2).since+表示过去时间点的词语(3).since+表示过去时间的时间状语从句(4)since+一段时间+agoeg.Ihavebeenateacher______ayear.Hehasbeenatthisschool_______2015.Wehavelearned1,000Englis

8、hwords_______wecametothisschool.forsincesince现在完成时句中常见的时间状语A.表示从过去一直持续到现在,不能是具体的过去