Unit 8 Grammar in use 课件 (2) 英语仁爱科普版（2024）七年级下册.pptx

UNit8OurBluePlanetGrammarinuse

takeaquickshowerturnoffthetapbrushone’steethTherebesb./sth.doingsth.asamatteroffact快速洗澡关水龙头刷牙有某人/某物正在做某事事实上behometo是......的家园bevaluablefor对......有用回顾导入

spend+时间/金钱+（in）doingsth.worryaboutmakeadifferencemakefulluseofonceaweek一周一次花费时间或金钱做某事担心起作用；产生影响；有关系充分利用

数字基数词序数词缩写数字基数词序数词缩写1onefirst1st15fifteenfifteenth15th2twosecond2nd20twentytwentieth20th3threethird3rd21twenty-onetwenty-first21st4fourfourth4th40fortyfortieth40th5fivefifth5th50fiftyfiftieth50th8eighteighth8th90ninetyninetieth90th9nineninth9th100onehundredonehundredth100th12twelvetwelfth12th101onehundredandoneonehundredandfirst101stNumbers

四组学生快速反应数字，哪一列出现数字，哪一组的学生就需要站起来，大声读出数字相应的英文。出现炸弹，则说“goaway!”Playagame!

10810062376314590201915127080321ReadyGo!!!

1.在语篇中感知千位数以上基数词的形式、意义和用法；2.观察、归纳祈使句肯定句和否定句的形式、意义和用法；3.通过描述节水活动，体会节水的重要性。揭示目标

Thinkandspeak:Canyoureadthenumbers?Haveatry1,00010,000100,0001,000,1001,000,000,000onethousandtenthousandonehundredthousandonemilliononebillion千一百万十亿

Activity1:Lookatthepicturesandreadthesentences.Payattentiontothenumbers.TheQinghaiLakecoversabout4,600squarekilometers.ThecoastlineoftheArcticOceanisabout45,390kilometerslong.TheChangjiangRiverisabout6,300kilometers.TheAtlanticOceancoversmorethan93,000,000squarekilometers.4,600fourthousand,sixhundred45,390forty-fivethousand,threehundredandninety6,300sixthousand,threehundred93,000,000ninety-threemillion

教师点拨（一）英语中多位数的读法1.先从后向前依次确认出最前前面逗号的数量级别（thousand（千）million（百万）billion（十亿）；2.从前向后以组为单位（三位为一组）依次说。1,345，556，700thousandmillionbilliononebillionthreehundredandforty-fivemillionfivehundredandfifty-sixthousandsevenhundred

languagepoints:1.morethan超过；多于=over2.数词+percentof+名词：此结构作主语时，谓语由of后的名词单复数决定。e.g.30percentofthewaterisfromrainwater.百分之三十的水来自雨水。

4,186fourthousand,onehundredand