许国璋英语1 Lesson21 课件.ppt

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1、LessonTwenty-One知识目标：TextADayofHarvestingDialogueAfterSupperGrammar1.不定式短语的句法作用2.介词用法小结RevisionExercises(LL.17-21)ADAYOFHARVESTING(APagefromaStudent’sDiary)October24.Todaywebeganharvesting.Wegotupatdaybreak,andafteranearlybreakfastwestartedoffforthericefields.Wegotthereafterhalfanhour'swalk.Thefiel

2、dsarounduslookedlikeagoldensea.Ihaveneverseenanythingsobeautiful!Weworkedsidebysidewiththefarmers.Atfirstsomeofuswereratherslow.Thefarmersshowedushowtocutthericeandhowtotiethebundles.Soonwelearnedtoworkfaster.Weworkedinthreegroups."Faster,faster!Wemustn'tfallbehindtheothers!"Thatwasthethoughtinever

3、ybody'smind.Eveningcamebeforewerealizedit.Weputdownoursicklesandlookedateachother.Ourclotheswerewetwithsweat.Oneveryfacetherewasasmile.Weharvestedthirtymualtogether.Thatwasnotbadforthefirstday.Buttomorrowweshallcertainlydobetter-muchbetter.NOTESTOTHETEXTTodaywebeganharvesting.harvest既可作名词，表示“收割”、“收

4、成”，也可作动词，表示“收割(作物)”。句中harvesting是动词harvest加词尾ing构成。它可用在介词之后，因而是名词，它又可带宾语(例如:Itwasadayforharvestingwheat.)，因而又是动词，所以称作动名词。动名词兼有动词与名词的某些特点，在句子中可用作主语、表语、动词和介词的宾语。例如:Seeingisbelieving.亲眼看见了才相信(即“百闻不如一见”)。IbeganstudyingEnglishattheageof12.Thankyouforgivingussomuchhelp.Wegotupatdaybreak,andafteranearlybr

5、eakfastwestartedoffforthericefields.startoff是动词加副词构成的动词短语。off表示“(离)开”、“(走)开”，即已不在原处之意。整个动词短语的意思是“动身”、“出发”。英语里这类动词短语为数不少，学习中应当注意。与startofffor同义的短语有leavefor，setofffor，setoutfor，startoutfor。介词for在这里表示目标、方向，即汉语里的“向”、“往”之意，如:Nextweekthey'llsetofffortheSouth.下星期他们去南方。Wegotthereafterhalfanhour'swalk.在说“到达

6、某地”时多用getto,例如:Wegottothecommuneatfiveo’clock.若后面用的是副词here,there,home等,则不用to,例如:Whendidyougethome?Igotthereateight.英语里的撇号(’)加s表示名词和代词的所有格，如：thepeople'sarmy，LiMing'sbook，one'swork，somebodyelse'smagazine和构成助动词、情态动词、系动词的缩合形式如shan't，won't，can't，mustn't，I'm，you're，he's之外，还用在时间之后，作定语，如:Aftertwoyears'hard

7、work，helearnedtospeakandwriteverygoodEnglish.WegottotheSummerPalaceafteranhour‘sride.乘车一小时，我们到了颐和园。Thefieldsarounduslookedlikeagoldensea.Look这里是“系动词”,系动词和表语一起构成谓语,例如:Youdon’tlookwelltoday.(你今天脸色不好。)Yourroom