八年级英语上册 Unit 5 Educational exchanges Grammar课件 （新版）牛津深圳版.ppt

unit5educationalexchanges grammar athepresentperfecttense weusethepresentperfecttensetotalkaboutthingsthathappenedinthepastbuthaveaconnectiontothepresentinsomeway alotofnewfriends alotofnewfriends workouttheruleweformthepresentperfecttensewith or pastparticipleofthemainverb have has thingstoremember i you we theyhave i ve you ve we ve they vehe she ithas he s she s it shavenot haven thasnot hasn t thepastparticipleofaregularverbisusuallythesameasitspasttense youcanfindthepastparticiplesofsomeirregularverbsonpages141and142 规则动词的过去分词和过去式一样不规则的动词过去分词见p141和p142 arrive arrived arrivedgo went gone erichasbeeninbeijingforaweek completehisemailtohismotherwiththepresentperfecttenseoftheverbsinbrackets to mumfrom eric dearmum i vebeeninbeijingforaweek i 1 meet myhostfamily have met they rereallyfriendly myhostbrotherweiandi 2 play alotoffootballataparknearhishome webothenjoyfootballverymuch mrs li myhostmother 3 cook medeliciouschinesefood haveplayed hascooked i 4 study chinesewithmybritishclassmates we 5 see someplacesofinterestinbeijingtoo however i 6 not visit thegreatwallyet andi 7 not do anyshoppingeither iwilldothesethingsnextweek love eric havestudied haveseen haven tvisited haven tdone bthepresentperfecttensewithalready yet everandneverwecanusealready yet everandneverwiththepresentperfecttense sarahhasalreadyseenmanyplacesofinterestinbeijing haveyouseenthegreatwallyet no ihavenotseenthegreatwallyet haveyouevervisitedthesummerpalace no ihavenevervisitedthesummerpalace workouttherulewecanusetheadverbsalready everandnever before after have hasand before after themainverb weoftenuseyetatthe beginning end ofaquestionoranegativesentence 我们可以把already everandnever放在have has或者实义动词前或者后面 把yet放在疑问句或者否定句中 置于句子的结尾 sarahwantstoknowwhetherthestudentsfrombeijinghavevisitedanyplacesinlondonbefore askandanswerquestionsinpairs followtheexample b1 s1 hasaliceeverseenbigben s2 no shehasn t she sneverseenbigben s1 hassheevervisitedtowerbridge s2 yes shehas shevisitedittwoyearsago latersarahisaskingthestudentsfrombeijingaboutwhattheyhaveandhavenotdoneinlondon askandanswerquestionsinpairs followtheexample b2 s1 haveyoudoneanyshoppingyet alice s2 no ihaven tdoneanyshoppingyet s1 haveyouseenbigbenyet s2 yes i vealreadyseenit morepractise 1 i already see thefilm 2 he finish hisworktoday notyet3 you be tohongkong yes i be theretwice have seen has finished have been havebeen 4 youever eat chocolatesundaes 圣代 no never 5 myfather just come backfromwork heistirednow 6 where sliming he go totheteacher soffice have eaten has came hasgone 7 sofari make quiteafewfriendshere 8 howlong thewangs stay here fortwoweeks 9 ihavebeentomacaubefore 改为否定句 i beentomacaubefore havemade have stayed have not 10 hehasn tcometoschoolbecausehe sill 就划线部分提问 hecometoschool 11 h