Unit+3+The+Internet+Discovering+Useful+Structures+课件【知识精讲】高中英语人教版（2019）必修第二册

Unit3TheInternet（第三课时）年级：一年级学科：高中英语（2019新人教版）Unit3TheInternetDiscoveringUsefulstructuresUnit3TheInternetDiscoveringUsefulstructuresThepresentperfectpassivevoice现在完成时的被动语态

Lead-in

歌词中的语法，你发现了吗？Goodbyetoyoumytrustedfriend别了朋友，我的挚友We'veknoweachothersincewewerenineorten我们已相识很久，那时我们还是孩子Togetherwe'veclimbedhillsandtrees我们曾一起爬过无数山丘、树丛LearnedofloveandABC's一起学会了爱，还有许多等等Skinnedourheartsandskinnedourknees也曾一起伤过心，一起破过皮Goodbyemyfriendit'shardtodie别了，我的朋友，友情是不死的.Lead-in

歌词中的语法，你发现了吗？Goodbyetoyoumytrustedfriend别了朋友，我的挚友We'veknoweachothersincewewerenineorten我们已相识很久，那时我们还是孩子Togetherwe'veclimbedhillsandtrees我们曾一起爬过无数山丘、树丛LearnedofloveandABC's一起学会了爱，还有许多等等Skinnedourheartsandskinnedourknees也曾一起伤过心，一起破过皮Goodbyemyfriendit'shardtodie别了，我的朋友，友情是不死的.Lead-in

歌词中的语法，你发现了吗？Goodbyetoyoumytrustedfriend别了朋友，我的挚友We'veknowneachothersincewewerenineorten我们已相识很久，那时我们还是孩子Togetherwe'veclimbedhillsandtrees我们曾一起爬过无数山丘、树丛LearnedofloveandABC's一起学会了爱，还有许多等等Skinnedourheartsandskinnedourknees也曾一起伤过心，一起破过皮Goodbyemyfriendit'shardtodie别了，我的朋友，友情是不死的.We'veknowneachothersincewewerenineorten我们已相识很久，那时我们还是孩子Togetherwe'veclimbedhillsandtrees我们曾一起爬过无数山丘、树丛现在完成时

表示

发生的或

的动作对

造成的

。现在完成时概念：过去已完成现在影响或结果e.g.1.

Goodbyetoyoumytrustedfriend.别了朋友，我的挚友。

2.

Ihavejustfinishedthehomework.

作业现在已经做完了。常用的时间状语有：◆常与不确定的时间状语连用，如:

uptonow,

bynow,lately,already,since,eversince,just,yet,before,recently,sofar,inthepast/lastfewyears等,表示“到目前为止”所发生的动作.

现在完成时谓语动词的构成

have/has+done1.have&has当主语是

___，用has;当主语是________，用have。第三人称单数其他人称2.done在现在完成时中叫___________除不规则变化外，一般情况加ed

过去分词现在完成时的基本句型现在完成时(ActiveVoice)肯定式

have/hasdone否定式

have/hasnotdone一般疑问句

have/has+主+done？

（have/has提前）特殊疑问句疑问词+have/has+主+done？

(疑问词+一般疑问句)1.Readthepairsofsentences.Underlineandcomparethedifferentverbforms.现在完成时被动语态的构成:Jan’slifehasbeengreatlyimprovedbytheInternet.TheInternethasgreatlyimprovedJan’slife.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.VerbformActivePassivehave/has+been+done主语和动作之间是主动关系主语和动作之间是被动关系have/has+done2.Changethesentencesintothepresentperfectpassivevoice.1.They’vebuiltakindofnewPCwithmorefunctions.AkindofnewPChasbeenbuiltwithmorefunctions.…已经被建造2.Someonehaslostanidentitycard.Anidentitycardhasbeenlost.…已经丢失了3.HaveyouconfirmedtheWi-Fipassword?HastheWi-Fipasswordbeenconfirmed?…已经被证实4.Haveyoupressedthebuttonyettocopythefile?Hasthebuttonbeenpressedyettocopythefile?…已经被按5.Hasanyonemadeacommentabouttheonlinedatabase?…已经被评论Hasa/anycommentbeenmadeabouttheonlinedatabase?巩固强化练习1.用现在完成时的被动语态改写、翻译句子。①Jack’sbosshasalwayspraisedhimforhisdevotiontowork.Jack___________________________byhisbossforhisdevotiontowork.②Theyhavefoundagoodplacetobuildatempleinthevillage.Agoodplacetobuildatempleinthevillage___________________.③Wehaven’tyetdecidedhowtosolvethatdifficulttechnologicalproblem.Howtosolvethatdifficulttechnologicalproblem___________________yet.④当我的家庭作业完成时我就回家。

Iwillgohomewhenmyhomework_________________.⑤纸币已被使用了1000多年了。

Papermoney_________________foroveronethousandyears．hasalwaysbeenpraisedhasn’tbeendecidedhasbeenfound巩固强化hasbeenfinishedhasbeenused6．中国的各项事业已取得了新的进展。Newprogress_________________invariousareasinChina.7．我的家庭作业已经做完了。Myhomework___________________.8．近几年他各种各样的书被出版了。Avarietyofhisbooks_____________________inrecentyears.9．从1949年起，政府就已经非常重视儿童的健康和保健。Since1949,greatattention__________________thehealthandcareofchildrenbythegovernment.hasbeenmadehasbeenfinishedhavebeenpublished

hasbeenpaidto2.将下面句子变为被动语态①Ihaveaskedhertohelpyou．→________________________________________________________②Wehaveplantedmanytreesonthehillinthelast5years．→________________________________________________________③Hehassentmeane­mail．→________________________________________________________→________________________________________________________Shehasbeenaskedbymetohelpyou.Manytreeshavebeenplantedonthehillbyusinthelast5years.Ihavebeensentane-mailbyhim.Ane-mailhasbeensenttomebyhim.巩固强化Readthepoemandunderlinethepresentperfectpassivevoiceinthefollowingpoem.

LookatthewayyourfacehasbeenwashedLookatthewayyourteethhavebeenbrushedLookatthewayyourshoeshavebeencleanedYou’dbetterdothemagain.LookatthewaytheflowershavebeenplantedLookatthewaythegrasshasbeencutLookatthewaythepathshavebeensweptIhopethatyou’llcomehereagain.AppreciateThinkofyourownsituationandwriteasimilarpoem.Lookattheway_______________Lookattheway_______________Lookattheway____________________________________________Lookattheway______________Lookattheway______________Lookattheway__________________________________________Thinkofyourownsituationandwriteasimilarone.Shareyourpoemwithyourpartner!Thinkofyourownsituationandwriteasimilarone.Lookattheway_________________________________Lookattheway______________