七年級(jí)上冊(cè)Unit7Howmucharetheseclothes?GrammarFocus語(yǔ)法專項(xiàng)講解和練習(xí)語(yǔ)法精講如何詢問(wèn)價(jià)格詢問(wèn)價(jià)格的句型為“Howmuchis/are...?”.1.“Howmuchis...?”常用來(lái)詢問(wèn)單數(shù)名詞或不可數(shù)名詞的價(jià)格,對(duì)此問(wèn)句進(jìn)行回答時(shí)常用句型為“It's+價(jià)格.”。2.“Howmuchare...?”常用來(lái)詢問(wèn)復(fù)數(shù)名詞的價(jià)格,對(duì)此問(wèn)句進(jìn)行回答時(shí)常用句型為“They're+價(jià)格.”。如:Howmucharetheseshoes?這些鞋子多少錢(qián)?Theyare18dollars.它們18美元。詢問(wèn)物品的價(jià)格還可以用句型“What'sthepriceof...?”。使用這一句型時(shí),不管所詢問(wèn)的物品是單數(shù)還是復(fù)數(shù)，be動(dòng)詞都用is,其答語(yǔ)都用“It's..."基數(shù)詞的記憶規(guī)則及用法1.基數(shù)詞的記憶規(guī)則;(1)0~12這13個(gè)數(shù)字獨(dú)立成詞,要單獨(dú)記憶。它們分別是:zero,one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve。(2)13~19都是以“個(gè)位數(shù)+teen”構(gòu)成，fourteen,sixteen,seventeen,nineteen為個(gè)位數(shù)直接加-teen構(gòu)成;thirteen,fifteen,eighteen的拼寫(xiě)需特殊記憶。(3)20~90整十位數(shù)的基數(shù)詞由相應(yīng)的個(gè)位數(shù)后加-ty構(gòu)成。sixty,seventy,ninety為個(gè)位數(shù)直接加-ty構(gòu)成;twenty，thirty,forty,fifty,eighty的拼寫(xiě)需特殊記憶。(4)21~99的兩位數(shù)的表達(dá)是整十位數(shù)加個(gè)位數(shù),中間加上連字符“-”。如:twenty-one,forty-two。(5)100可以寫(xiě)成ahundred或onehundred.一般hundred不用復(fù)數(shù)形式。如:twohundred,threehundred。2.基數(shù)詞的用法:(1)表示年齡,基數(shù)詞放在year(s)old之前。Heistwelveyearsold.他12歲。(2)用來(lái)表示人或物的數(shù)量,放在名詞之前。Ihavethreeballs.我有3個(gè)球。(3)表示順序、編號(hào)等,放在名詞之后。I'minClassFour.我在4班。(4)用來(lái)計(jì)算?！猈hat'sfortyandtwenty?40加20是多少?—It'ssixty.是60。(5)基數(shù)詞作主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞用單數(shù)形式。Sixandninetyisninety-six.6加90是96?！窘滩牡渚洹?.“這頂帽子多少錢(qián)?”“它5美元?！?P39)—_____________________thehat?—_______fivedollars.2.“這些短襪多少錢(qián)?”“它們2美元?！?P39)—_____________________thesesocks?—_______twodollars.語(yǔ)法精練一、用is,are,it's或they're填空。1.—Howmuch_______thatgreenbag?—_______$25.2.—Howmuch_______theseredshoes?—_______$45.3.—Howmuchtheice-cream?—_______$5.4.—Howmuch_______thosebananas?—_______tenyuan.二、按要求完成句子。1.Thesesocksaretwodollars.(對(duì)畫(huà)線部分提問(wèn))_____________________thesesocks?2.Sixty-twoandthirty-eightisonehundred.(對(duì)畫(huà)線部分提問(wèn))______________sixty-twoandthirty-eight?3.Howmuchistherice?(同義句轉(zhuǎn)換)____________________________therice?4.Howmuchisthiscomputer?(改為復(fù)數(shù)句)Howmuch_____________________？三、根據(jù)漢語(yǔ)提示完成下列句子。1.“那件藍(lán)色的夾克衫多少錢(qián)?”“98元?！薄猒____________________thatbluejacket?—_______98yuan.2.玲玲的媽媽39歲。Lingling'smotheris_____________________.3.邁克在8班。Mikeisin______________.4.三雙襪子僅5美元。______are______$5_______________________.參考答案：[教材典句]1.Howmuchis;It’s2.Howmuchare;They’re語(yǔ)法精練一、用is,are,it's或they're填空。1.is;It’s2.are;They’re3.is;It’s4.are;They’re二、按要求完成句子。1.Howmuchare2.Whatis3.What’sthepriceof4.arethese