广州版英语七年级上册第三单元知识点.docx
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广州版英语七年级上册第三单元知识点.docx
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广州版英语七年级上册第三单元知识点
Unit3TheEarth
一、教学衔接
二、教学内容
知识点一、名词
表示某一事物,有具体的和抽象的之分。
分为可数名词和不可数名词。
强调:
不可数名词都默认为单数,所以总是用is或者was;最好不要根据some、any、alotof等词去作判断,以免受误导。
1、可数名词如何变“复数形式”:
a.一般情况下,直接加-s,如:
book-books,bag-bags,cat-cats,bed-beds;读音:
清辅音后读[s],浊辅音和元音后读[z]。
b.以s.x.sh.ch结尾,加-es,如:
bus-buses,box-boxes,brush-brushes,watch-watches;读音:
[iz]。
c.以“辅音字母+y”结尾,变y为i,再加-es,如:
family-families,strawberry-strawberries;读音:
[z]。
d.以“f或fe”结尾,变f或fe为v,再加-es,如:
knife-knives,thief-thieves;读音:
[z]。
e.以“o”结尾的词,一般直接加s,mango除外:
mango-mangoes;读音:
[z]。
f.不规则名词复数:
man-men,woman-women,policeman-policemen,policewoman-policewomen,snowman-snowmen,mouse-mice,child-children,foot-feet,tooth-teeth,fish-fish,people-people,Chinese-Chinese,Japanese-Japanese
2、不可数名词没有复数。
如果要计算不可数名词所表达的数量,就得在数词和不可数名词之间加上“量词+of”。
例如:
aglassofwater,apieceofpaper,abottleofjuice
判断步骤:
↗如是am、is或was→原形
读句子→读该单词→认识该单词→理解意思→看be动词
↘如是are或were→加s或es
练一练:
1、写出下列各词的复数。
I_________him_________this_______her______watch_______mango_______
child_______photo________diary______day________foot________dress________tooth_______sheep______box_______strawberry_____thief_______engineer______peach______sandwich______man______woman_______leaf_______people________
2、用所给名词的正确形式填空。
(1)Aretheretwo(box)onthetable?
(2)Icanseesome(people)inthecinema.
(3)Howmany(day)arethereinaweek?
(4)Here’refive(bottle)of(juice)foryou.
(5)This(violin)ishers.Those(grape)areoverthere.
知识点二、经典句记忆
1.TherearedifferentanimalsonEarthtoo.地球上还有不同的动物。
2.TheEarthprovidesuswithair,waterandfood.地球为我们提供了空气、水和食物。
3.Wemuststopdoingthesethings.我们必须停止做这些事情。
4.TherearedifferentforustoprotecttheEarthforourfuture.
对我们来说,为了我们的未来保护地球是很重要的。
5.Weneedairtobreathe.我们需要空气来呼吸。
6.Weneedairtosurvive.我们需要空气来生存。
7.Andwhenwebreatheit,itkeepsusalive.当我们呼吸时,空气让我们充满活力。
知识点三、一般现在时的功能及句式结构
功能:
a)表示事物或人物的特征、状态。
eg.Theskyisblue.
b)表示经常性或习惯性的动作。
eg.Igetupatsixeveryday.
c)表示客观现实。
eg.Theearthgoesaroundthesun.
标志词:
often,usually,always,sometimes,seldom,never,everyday,onMondays,at8:
00
句子结构因动词为be动词或实义动词略有不同,结构分别如下:
(1)be动词(am/is/are)
a)肯定句:
主语+be+其他
b)否定句:
主语+be+not+其他
c)一般疑问句:
be+主语+其他
d)肯定回答:
Yes,主语+bee)否定回答:
No,主语+be+not
(2)实义动词
a)肯定句:
主语+动词一般现在时+其他
b)否定句:
主语+do/does+not+动词原形+其他
c)一般疑问句:
Do/Does+主语+动词原形+其他
d)肯定回答:
Yes,主语+do/doese)否定回答:
No,主语+do/does+not
3、用动词的正确形式填空
解题方法:
先看标志词,确定时态;看人称,填写谓语部分。
a)Mikesometimes___________(go)totheparkwithhissister.
首先句子里面有标志词sometimes,我们可以确定这个句子是一般现在时,句子主语是Mike,它是第三人称单数,所以正确答案是goes。
b)We____________(notwatch)TVonMondays.
首先句子里面有标志词onMonday,我们可以确定这个句子是一般现在时,句子主语是we,它是第一人称复数,所以正确答案是don’twatch。
4、行为动词第三人称单数的变化规则
一般现在时句子中,只有主语为第三人称单数时动词才有词形变化,主语为其他人称时动词均用原形,变化规则如下:
a)一般情况下,在动词后直接加s。
eg.play—plays like—likes
b)以s,x,sh,ch,o结尾的动词加es。
eg.go—goes wash—washes,mix—mixes,guess—guesses
c)以辅音字母加y结尾的动词,把y改i再加es。
eg.fly—flies study—studies,try—tries
5、Exercise
A写出下列动词的第三人称单数。
drink________go________stay________make________look________
pass________carry________come________watch________plant________fly________study________brush________do_________teach________
B用所给单词的适当形式填空。
1.Heoften________(have)dinnerathome.
2.DanielandTommy_______(be)inClassOne.
3.We_______(notwatch)TVonMonday.
4.Nick_______(notgo)tothezooonSunday.
5.______they________(like)theWorldCup?
C按照要求改写句子。
1.DanielwatchesTVeveryevening.(改为否定句)
___________________________________________________
2.Idomyhomeworkeveryday.(改为一般疑问句,作否定回答)
________________________________________________________
3.Shelikesmilk.(改为一般疑问句,作肯定回答)
___________________________
4.Amylikesplayingcomputergames.(改为一般疑问句,作否定回答)
___________________________________________________
5.Wegotoschooleverymorning.(改为否定句)
_______________________________________________________
三、教学练习
找出下列各组单词中划线部分的发音及其他不同的单词。
()1.A.closeB.hobbyC.problemD.not
()2.A.partB.grammarC.marketD.large
()3.A.reportB.importantC.horseD.junior
()4.A.catchB.completeC.countryD.practice
()5.A.energyB.GermanyC.groundD.engineer
选择适当的词填空。
1.---What’sonthetable?
-----There___________(is/are)twoglassesofmilkonit.
2.Allthejuice____________(is/are)inthebottle.
3.There___________(is/are)______________(a/some)breadinthefridge.
4.-----How______________(many/much)cupsofteawouldyoulike?
------Iwouldlikethree.
5.Therestaurantisgood.Look,therearesomany___________(food/people)init.
单项选择。
1.Hewantstowritedownsomething,soheasksmefor______________.
A.apaperB.somepapersC.apieceofpaperD.somepiecesofpapers
2.Theywanttohavesome__________forsupper,sotheydecidetocatch________now.
A.fishes;muchB.fish;manyC.fish;muchD.fishes;many
3.There__________manykindsofanimalsliving_________Earth.
A.are;onB.is;inC.are;atD.is;by
4._________ofthestudentsinourclassarebigfootballfans.
A.OnequartersB.ThreequartersC.ThreequarterD.Oneofquarter
5.----Whatdoyouthinkofourcity?
----Itisgetting____________.
A.cleanerandcleanerB.cleanandcleanerC.cleanandcleanD.cleanestandcleanest
6.Whenthetrafficlightisred,cars__________stop.
A.canB.needC.mayD.must
7.Motherputstheapplesinthefridgeto____________.
A.keepfreshthemB.keepthemfreshC.keepingthemfreshD.keepingfreshthem
8.Mrs.Smithaskedherson___________toomuchicecream.
A.tonoteatB.don’teatC.nottoeatD.don’ttoeat
9.WhenMissLiwalksintotheclassroom,thestudents______________andkeepquiet.
A.stoptotalkB.stopnottalkC.stoptalkD.stoptalking
10.----Whatishedoing?
-----Heiswritingareporton__________waterclean.
A.tomakeB.madeC.makingD.makes
语法选择。
Inspring,bigsandstormsoftenhappeninthenorth.Deserts(沙漠)aregrowingbiggerandbigger.Scientists__________toturndesertsintogoodlandagain.Thebestwayistobringwatertodesertsandscientistsdotheirbesttoworkoutthewaterproblem.Sopeople_________liveandgrowfoodthere.However,land__________deserts.Scientistsmaynotbeabletochangedesertsintime.Whydoeslandbecomedeserts?
ScientiststhinkthatpeoplearedoingbadthingstotheEarth.
SomeplacesonEarthdon’tget__________rain.Buttheystilldonotbecomedeserts.Thisisbecausethere_________grassandsomegreenplantsgrowingthere._________areveryimportanttodryplaces.Plantsdonotlet_________sunmakethelandeven____________.Plantsdonotletthewindblowthesoil(泥土)away.Whenrain_________,plantsholdthewater.Without(没有)plants,thelandcanbecomedesertvery________.
()1A.triesB.triedC.tryingD.aretrying
()2.A.mustB.couldC.canD.would
()3.A.becomeB.isbecomingC.becameD.tobecome
()4.A.muchB.manyC.moreD.few
()5.A.areB.wereC.isD.was
()6.A.WeB.TheyC.YouD.It
()7.A.theB.anC.aD./
()8.A.thedriestB.driestC.dryD.drier
()9.A.fallsB.fellC.fallingD.tofall
()10.A.easyB.easierC.easiestD.easily
四、教学总结
这节课主要学习unit3theearth,学习运用名词及一般现在时,这两个知识点在考试中也是必考的内容,所以要求掌握并能灵活运用。
五、作业布置
用括号内动词的适当形式填空。
1.Heoften________(have)dinnerathome.
2.DanielandTommy_______(be)inClassOne.
3.We_______(notwatch)TVonMonday.
4.Nick_______(notgo)tothezooonSunday.
5.______they________(like)theWorldCup?
6.What_______theyoften_______(do)onSaturdays?
7._______yourparents_______(read)newspaperseveryday?
8.Thegirl_______(teach)usEnglishonSundays.
9.SheandI________(take)awalktogethereveryevening.
10.There________(be)somewaterinthebottle.
11.Mike_______(like)cooking.
12.They_______(have)thesamehobby.
13.Myaunt_______(look)afterherbabycarefully.
14.Youalways_______(do)yourhomeworkwell.
15.I_______(be)ill.I’mstayinginbed.
16.She_______(go)toschoolfromMondaytoFriday.
17.LiuTao_______(do)notlikePE.
18.Thechildoften_______(watch)TVintheevening.
19.SuHaiandSuYang_______(have)eightlessonsthisterm.
20. -Whatday_______(be)ittoday?
-It’sSaturday.
21Weoften___________(play)intheplayground.
22.He_________(get)upatsixo'clock.
23.________you__________(brush)yourteetheverymorning?
24.What________(do)heusually________(do)afterschool?
25.Danny____________(study)English,Chinese,math,scienceandartatschool.
26.Mikesometimes__________(go)totheparkwithhissister.
27.Ateightatnight,she____________(watch)TVwithherparents.
28.________Mike_________(read)Englisheveryday?
29.Howmanylessons_________yourclassmate_________(have)onMonday?
30.Whattime_________hismother_________(do)thehousework?
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