江蘇省鹽城市阜寧縣明達(dá)初級(jí)中學(xué)八年級(jí)英語下冊 8B Unit 1 Past and present Grammar課件 牛津版.ppt

unit1pastandpresent grammar 牛津版初中英語八年級(jí)下 thepresentperfecttense weusethesimplepasttensetotalkaboutwhathappenedatadefinitetimeinthepast pastpresenteddiewasbornfouryearsago weusethepresentperfecttensetotalkaboutthingsthatstartedinthepastandstillhavesomeconnectionwiththepresent eddiehaslivedwithmilliesincehewasborn eddiehaslivedwithmillieforfouryears present past past present 4years 一 現(xiàn)在完成時(shí)的構(gòu)成1 現(xiàn)在完成時(shí)的肯定句句型 主語 have has 過去分詞 wehavelivedinbeijing hehaslivedinbeijing ihavefinishedmyhomework 2 現(xiàn)在完成時(shí)的否定句句型 主語 have has not 過去分詞ihavenotseenthemovieyet hehasn tbeentobeijingsincethen thepastparticlesofsomeverbs makingsentencesmr wuasksthestudentstocompletethesentencesbelowusingthepresentperfecttense helpthemcompletethesentences they go tothecinemaalready mrandmrs li notcome backyet john be totheusaafewtimes we notsee thatfilmyeti nottalk tomycousinsincelastfriday you notvisit meforalongtime havegone havenotcome hasbeen havenotseen havenottalked havenotvisited 3 現(xiàn)在完成時(shí)的一般疑問句句型have has 主語 過去分詞 haveyoufinishedthework hasshearrivedhere 4 現(xiàn)在完成時(shí)的特殊疑問句句型特殊疑問詞 have has 主語 過去分詞 howmanytimeshaveyoubeentothegreatwall chattimemillieandsandyaretalkingaboutafilmabouthongkong completetheirconversation usethecorrectformsoftheverbsinthebrackets m you see anyfilmsrecently sandy s no i whataboutyou m yes i see one s whatisitabout m i forget thetitle it sabouthongkong have seen haven t haveseen haveforgotten s yourcousin go withyou m no he he be verybusythisweek s didyouenjoythisfilm m yes idid i learn alotabouthongkong spastandpresent you visit hongkongbefore s no i butihaveheardabouthongkong snewairport did go didn t hasbeen havelearnt have visited haven t m doyouknowhowlongithasinservice s no idon t m letmetellyou it be inservicesince1998 s oh soitwasoneyearafterhongkong sreturntochina m yes youmustgoandwatchthatfilmifyouwanttolearnmoreabouthongkong hasbeen 表示現(xiàn)在完成時(shí)的時(shí)間副詞 一 since短語或從句表示過去的動(dòng)作延續(xù)至今 since之后的時(shí)間為一點(diǎn) mr smithhasworkedheresince1984 1984年以來 史密斯先生一直在這工作 he slearnedabout5 000englishwordssincehewenttocollege 他上大學(xué)以來大約學(xué)了五千個(gè)英語單詞 二 for短語表示動(dòng)作延續(xù)多長時(shí)間 for的賓語為時(shí)間段 wehaveknowneachotherfortwentyyears 我們認(rèn)識(shí)有二十年了 ihaven tseenherforalongtime 我好久沒有見到她了 三 just recently是完成時(shí)的時(shí)間狀語 justnow有amomentago之意 是一般過去時(shí)的時(shí)間狀語 thetrainhasjustarrived 火車剛到 didyouseejoanjustnow 你剛才看到瓊了嗎 haveyouheardfromyourfamilylately recently 你最近收到家人的來信了嗎 四 ever和never也是現(xiàn)在完成時(shí)常見的時(shí)間狀語 前者意思是 曾經(jīng) 多見于疑問句或否定句中 后者意思是 從來沒有 表示全部否定 haveyoueverseenthefilm no ihaveneverseenit 你曾經(jīng)看過這部影片嗎 沒有 從來沒看過 nobodyinourclasshaseverbeenthere 我們班沒有人去過那 五 already和yet常見于現(xiàn)在完成時(shí)中 有 已經(jīng) 之意 前者一般用在肯定句中 后者用在疑問句中 yet在否定句中有 還 之意 hasthebusleftyet yes ithasalreadyleft no ithasn tleftyet 汽車開走了嗎 是的 已經(jīng)開走了 不 還沒有開走 六 already 用于現(xiàn)在完成時(shí)的肯定句中 yet 用于現(xiàn)在完成時(shí)的否定句和疑問句中 用 already yet 填空 hehas visitedmanyplacesinchina 注意 a