人教精通版英語四年級下冊Lesson 12優(yōu)質(zhì)課件

Unit2Therearefortystudentsinourclass.Lesson12精通·四年級下冊Reviewtwenty-onetwenty-twotwenty-threetwenty-fourtwenty-fivetwenty-six二十一二十二二十三二十四二十五二十六twenty-seventwenty-eighttwenty-nineeleventwelvethirty二十七二十八二十九十一十二三十fortyfiftysixtyseventyeightyninetyonehundred四十五十六十七十八十九十一百1.問答數(shù)量的句型：

—Howmany+可數(shù)名詞復(fù)數(shù)+arethere+其他？—(Thereis/are+)基數(shù)詞.你們班有多少名學(xué)生？—Howmanystudentsarethereinyourclass?有40名學(xué)生?！猅herearefortystudents.2.Let’s引導(dǎo)的祈使句，表示讓我們做某事：Let’sdosth.讓我們從一數(shù)到二十九報數(shù)。Let’scountfrom1to29.3.表示……怎么樣的句型：Howabout…？你們學(xué)校怎么樣？Howaboutyourschool?4.問答對方擁有物品的具體數(shù)量的句型：

—Howmany+名詞的復(fù)數(shù)形式+doyouhave?—I/we+have+a/an+可數(shù)名詞單數(shù).—(I/we+have+)基數(shù)詞(+可數(shù)名詞復(fù)數(shù)形式).

—Howmanybagsdoyouhave?你們有多少書包？

—Wehaveninetybags.我們有90個書包。FunstoryLet’shelpchildreninneed.Weneedbooks.Howmanybooksdoyouhave?Ihavetwenty-fivebooks.Howmanybooksdoyouhave?Ihavethirty-fivebooks.Howmanybooksdoyouhave?Ihavefortybooks.Wehaveonehundredbooksnow.No,wehaveninety-ninebooks.Why?There’sonebookhere!Languagepoints1.Let’shelpchildreninneed.我們幫助需要幫助的孩子們吧！

helpsb./sth.幫助某人/某事。例：我們需要幫助那只小狗。Weneedhelpthesmalldog.inneed意為“在危難中，在窮困中”例句：他非常貧窮。Heisingreatneed．2.Weneedbooks.我們需要書。此句中need為實義動詞，意為“需要”。其用法如下：

(1)當(dāng)主語為物時，后接名詞或動詞-ing。

例句:這些花需要澆水。Theflowersneedwatering.

(2)當(dāng)主語是人時，后可接名詞和動詞不定式.

即：needsth./needtodosth.例句:Heneedssomehelp.Youneedtowearmoreclothes.注意：need后跟不定式且用于否定句中時，表示

“不必”，指沒義務(wù)或沒必要做某事。例句:你不必馬上做那件事情。Youdon’tneedtodoitatonce.Let’scheck5×10students20+7boys20+3girls5×8teachers4×20books10×10pencils234156Howmanystudentsarethere?Therearefifty.Playroles5×10studentsHowmanyboysarethere?Therearetwenty-seven.Playroles20+7boysHowmanygirlsarethere?Therearetwenty-three.Playroles20+3girlsLanguagesFocusHowmanystudentsarethereinyourclass?Twenty-nine.Howmanystudentsarethereinyourclass?Thereareforty.Howmanyteachersarethereinyourschool?Therearefifty.Howmanybagsdoyouhave?Wehaveseventybags.Howmanypensdoyouhave?Wehaveninetypens.twenty-one~twenty-ninethirtyfortyfiftysixtyseventyeightyninetyonehundredeleventwelve