冀教版英語(yǔ)八年級(jí)下課件現(xiàn)在完成時(shí).ppt

現(xiàn)在完成時(shí)構(gòu)成 現(xiàn)在完成時(shí)由 have has 動(dòng)詞的過(guò)去分詞 構(gòu)成 現(xiàn)在完成時(shí)的肯定式 否定式和疑問(wèn)式及簡(jiǎn)單回答形式 以動(dòng)詞study為例 肯定式 I You havestudied He She It hasstudied We You They havestudied 否定式I You havenot haven tstudied He She It hasnot hasn tstudied We You They havenot haven tstudied 疑問(wèn)式 HaveI you studied Yes you I have No you I haven t Hashe she it studied Yes he she it has No he she it hasn t Havewe you they studied Yes you we they have No you we they haven t 2 動(dòng)詞的過(guò)去分詞 規(guī)則與不規(guī)則你還記得過(guò)去式嗎 你能寫(xiě)出下列單詞的過(guò)去分詞嗎 be finish live invite see paint help like tell study stop hate make lugh learn play write say Have 請(qǐng)用兩個(gè)單詞分別寫(xiě)現(xiàn)在完成時(shí)的肯定句 否定句和疑問(wèn)句 Ihavewrittenmypostcard Ihaven twrittenmypostcard Haveyouwrittenyourpostcard Yes Ihave No Ihaven t你寫(xiě)對(duì)了嗎 練一練用完成時(shí)完成下列句子1 Theroomiscold Who open thewindow 2 He go tothecinema 3 you put awaymydictionary 4 We notfinish theworkyet 5 I see theplay I see itlastmonthwithmysister 6 Iamnothungry I just have mydinner 3 用法 表示過(guò)去發(fā)生或已經(jīng)完成的某一動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果 例如 Ihaveopenedthewindow 我已經(jīng)把窗戶打開(kāi)了 窗戶是開(kāi)著的 Theconcerthasstarted 音樂(lè)會(huì)已經(jīng)開(kāi)始 音樂(lè)會(huì)現(xiàn)在在進(jìn)行 TheyhavegonetoShanghai 他們已去上海了 他們不在這里 現(xiàn)在完成時(shí)不能和表示過(guò)去的時(shí)間狀語(yǔ) 如yesterday lastyear in1980 threedaysago Justnow whenIcamein等連用 但可以和一些不確定的時(shí)間狀語(yǔ) 如already yetSometimes often before lately once never Just ever等連用 也可以和包括現(xiàn)在在內(nèi)的時(shí)間狀語(yǔ) 如thismorning today thisWeek thisyear等連用 例如Shehasalreadycome 她已經(jīng)來(lái)了 Ihaven treadityet 我還沒(méi)有讀過(guò)這個(gè)Haveyoueverseeneachotherbefore 你們見(jiàn)過(guò)面嗎 1 Don tworry Thetrain yet A arrivedB won tarriveC hasn tarrived2 B 表示過(guò)去已經(jīng)開(kāi)始 持續(xù)到現(xiàn)在 也許還會(huì)繼續(xù)進(jìn)行下去 動(dòng)作或狀態(tài) 常和表示一段時(shí)間狀語(yǔ) 如 today thesedays since for thismonth now等連用 例如 IhavestudiedEnglishfortwoyears 我學(xué)英語(yǔ)已經(jīng)兩年了 TheyhavelivedinBeijingsince1980 他們自 年就一直住在北京 We veknowneachothersincewewerechildren 我們從小就認(rèn)識(shí) 注意 英語(yǔ)的行為動(dòng)詞大體可以分為兩大類(lèi)型 一是延續(xù)性的動(dòng)詞 二是終止性動(dòng)詞 延續(xù)行動(dòng)詞是指那些動(dòng)作意義不會(huì)一下完成 而是可以延續(xù) 發(fā)展的動(dòng)詞 如 work read write study等 這些動(dòng)詞的完成時(shí)可以和段時(shí)間狀語(yǔ)連用 終止性動(dòng)詞是指那些動(dòng)作一次完成 不能延續(xù)的動(dòng)詞 如 come go buy die join begin等 這些動(dòng)詞的肯定式不能和段時(shí)間狀語(yǔ)連用 在 用法中要用延續(xù)性動(dòng)詞代替終止性動(dòng)詞 Shehasbeenbackfortwoyears 正 Shehascomebackf