U6L21-L22（課件）-三年級(jí)英語(yǔ)上冊(cè)（北京版）

Unit6

Ihavefiftymarkers.Lesson21-Lesson221.

學(xué)習(xí)詞匯:seventy,eighty,ninety,

hundred,blackboard2.掌握句型

:

Fiftyplustenissixty.

Onehundredminustenisninety.組合oi和oy的發(fā)音以及規(guī)則學(xué)習(xí)目標(biāo)Catalogue1.Vocabulary2.Text3.Practice4.SummaryVocabularyseventy

/?sev(?)nti/

七十【例句】Mygrandmaisoverseventynow.

我奶奶現(xiàn)在七十多歲了?！就卣埂縮even+ty=seventyVocabularyeighty

/?e?ti/

八十【例句】Thereareeightypagesinthisbook.這本書有八十頁(yè)?！就卣埂縠ight+y=eighty（八十）Vocabularyninety/?na?nti/

九十【例句】Thiscastlehasninetywindows.這座城堡有九十扇窗戶?！就卣埂縩ine+ty=ninety（九十）Vocabularyhundred

/?h?ndr?d/

百【例句】Ninetyplustenisonehundred.九十加上十是一百。【拓展】thousand千【拓展】hundredsof數(shù)以百計(jì)的Vocabularyblackboard

/?bl?kb??d/

n.黑板【例句】Lookattheblackboard,pupils.同學(xué)們，請(qǐng)看黑板?！就卣埂縝lack+board=blackboard黑板Vocabularyplus/pl?s/

加（+）【例句】Twoplusfiveisseven.二加五等于七。Vocabularyminus/?ma?n?s/

減（-）【例句】Twentyminusoneisnineteen.二十減一等于十九。Lesson21Listenandsay看黑板上的數(shù)字:50,60,____,_____,90。誰(shuí)能猜出消失的數(shù)字？很容易。五十加十等于六十。所以缺失的數(shù)字是70和80。1.lookat...看...2.ontheblackboard在黑板3.guess猜想4.themissingnumbers

消失的數(shù)字5.plus加（+）Listenandsay100減去10是90。做的好！1.onehundred1002.計(jì)算：minus（-）3.Welldone！做的好！90減去10是80。所以缺失的數(shù)字是80和70。Listen,look,andlearnFiftyplustenissixty.Onehundredminustenisninety.ReadandwriteLesson22NowIcanunderstandListenandtick.NowIcansay計(jì)算公式：Whatisplus/minus...?It’s...NowIknowthesoundoioilcoinjoinboilnoisyoyboytoyjoyThatnoisyboyhasmanytoys.Thetoysgivehimgreatjoy.NowIcanwriteLet'schantSentencesSentences1.Twentyplustenisthirty.20加10等于30。解讀:這是用英語(yǔ)表達(dá)“……加……等于……”的句型。舉一反三:Thirtyplustenisforty.30加10等于40。

Fiftyplusfiftyisonehundred.50加50等于100。Sentences2.Onehundredminustenisninety.100減10等于90.解讀:這是用英語(yǔ)表達(dá)“……減……等于……”的句型。舉一反三:Twentyminustenisten.20減10等于10。

Fiftyminustwentyisthirty.50減20等于30。SentencesLookatthenumbers>看黑板上的這些數(shù)字：50,60,____,

____,90.Whocanguessthemissingnumbers?

誰(shuí)能猜到空缺處的數(shù)字？It'seasy.Fiftyplustenissixty.Sothemissingnumbersareseventyandeighty.很簡(jiǎn)單。五十加十是六十。所以空缺的數(shù)字是七十和八十。SentencesOnehundredminustenisninety.

一百減去十是九十。Ninetyminusteniseighty.

九十減去十是八十。Sothemissingnumbersareeightyandseventy.

所以空缺處的數(shù)字是八十和七十。Welldone.做得好。SentencesFifty

plus

ten

is

sixty.

Onehundred

minus

ten

is

ninety.

五十加十是六十。一百減去十是九十。Fortyplustwentyissixty.

Seventyplusteniseighty.四十加二十是六十。七十加十是八十。SentencesAplusBis100.AminusBis20.

A加上B是100.

A減去B是20.Ais______,

Bis______.

A是______,

B是______.SentencesAplusBis90.AminusBis50.

A加上B是90.

A減去B是50.Ais______,

Bis______.

A是______,

B是______.SentencesAplusBis70.AminusBis10.

A加上B是70.

A減去B是10.Ais______,

Bis______.

A是______,

B是______.ifindnicekiteice找到

漂亮的

風(fēng)箏

冰

acatthatman貓

那個(gè)

男人flaghatblack旗子

帽子

黑色的Thatcatisflyingakite.那只貓?jiān)诜棚L(fēng)箏。Dad,helpmefindmynicekite.爸爸，幫我找到我的漂亮風(fēng)箏。

SentencesMikeandhisparentslikeChinesefood.

邁克和他的父母喜歡中餐。Theyofteneatinrestaurants.

他們經(jīng)常在餐館吃飯。Thereareallkindsofdishesonthemenu,

菜單上有很多種菜品，buttheyalwaysordervegetables,fish,meat,andsoup.但是他們總是點(diǎn)蔬菜、魚、肉和湯。Theysometimesgotofastfoodrestaurantsforhamburgers.他們有時(shí)候去快餐店吃漢堡。

SentencesI’dlikesomeapples.我想要一些蘋果。I’dlikeahamburger.我想要一個(gè)漢堡包。I’dlikeanicecream.我想要一個(gè)冰淇淋。I’dlikesomechicken.我想要些雞肉。I’dlikeaglassofwater.我想要一杯水。SentencesSentences1.Twentyplustenisthirty.20加10等于30。解讀:這是用英語(yǔ)表達(dá)“……加……等于……”的句型。舉一反三:Thirtyplustenisforty.30加10等于40。

Fiftyplusfiftyisonehundred.50加50等于100。Sentences2.Onehundredminustenisninety.100減10等于90.解讀:這是用英語(yǔ)表達(dá)“……減……等于……”的句型。舉一反三:Twentyminustenisten.20減10等于10。

Fiftyminustwentyisthirty.50減20等于30。3.—Whatis…plus/minus…?……加/減……等于幾?—It’s….等于……解讀:這是

what引導(dǎo)的特殊疑問(wèn)句,用來(lái)詢問(wèn)幾加/減幾等于幾,

答語(yǔ)一般為“It’s+基數(shù)詞.”,或者直接用基數(shù)詞回答也可以。舉一反三:—What’stwentyplusten?20加10等于幾?—It’sthirty.等于30。Practice給下列單詞選擇合適的翻譯。()1.numberA.和B.數(shù)字C.鉛筆()2.hundredA.百B.千C.萬(wàn)()3.thirtyA.二十B.三十C.十三()4.seventyA.十七B.七十C.第七()5.guessA.想B.喜歡C.猜測(cè)BABBC英漢互譯blackboard_______hundred______seventy_______八十________【答案】1.黑板2.一百3.七十4.eighty【答案】1.六加二十等于多少？

2.What’sfiftyplustwenty?

3.你知道空缺的數(shù)字嗎？

4.空缺的數(shù)字是20.翻譯下列句子1.What’ssixplustwenty?_____________________2.50+20=?____________________3.Doyouknowthemissingnumber?_____________________4.Themissingnumberistwenty._________________________拍拍手,讀讀下面的歌謠。AplusBis100.AminusBis20.Ais60,Bis40.AplusBis90.AminusBis50.Ais70,Bis20.AplusBis70.AminusBis10.Ais40,Bis30.讀讀寫寫選擇填空。()1.Look________thenumbersontheblackboard.A.onB.inC.at()2.________canguessthemissingnumbers?A.WhatB.WhenC.Who【答案】1.C2.C()3.Fifty________tenisforty.A.minusB.plusC.and()4.Forty________twentyissixty.A.minuB.plusC.and()5.Themissingnumbers________eightyandseventy.A.isB.areC.am【答案】3.A4.B5.B照樣子,計(jì)算。例:Eightyminustwentyissixty.___________________________________________Onehundredminusfortyissixty.照樣子,計(jì)算。例:Eightyminustwentyissixty.___________________________________________Seventyminustwentyisfifty.照樣子,計(jì)算。例:Eightyminustwentyissixty.___________________________________________Fortyplusfortyiseighty.照樣子,計(jì)算。例:Eightyminustwentyissixty.___________________________________________Thirtyplusfortyisseventy.照樣子,計(jì)算。例:Eightyminustwentyissixty.___________________________________________Eightyminustwentyissixty.照樣子,計(jì)算。例:Eightyminustwentyissixty.___________________________________________Ninetyplustenisonehundred.

從方框中選出合適的詞填空。1.Ihavemany________.Icandrawpictureswiththem.2.Hehasthree________.3.MyfriendJimhas________books.4.Ten________twentyisthirty.k.5.Ninety________thirtyissixty.minusfiftymarke