牛津英语8A复习-Unit-4省公开课金奖全国赛课一等奖微课获奖课件

8AUnitFour牛津初中英语复习之1/13四会单词：N.:bear/giantpanda/kangaroo/bambooshoot/hunter/fur/farmer/forest/nowhere/danger/action/writer/camel/fox/giraffe/polar/tortoise/wolf/zebra/bamboo/report/attack/poison/character/farmland/mice/smell/lossAdj.:wild/safe/thick/sharpAdv.:sadlyV.:protect/encourage/step/hunt/sell/train2/13三会单词：alive/delicious/squirrel/following/spit/male/medicine/insect/chairperson/peaceful/continue/suitable了解单词：dolphin/survive/rainforest/snail/upright3/13重点句型1.

Attheverybeginning,XiWangdrankhermother’smilkforupto14hoursaday.2.

Mothersoftenleavebabypandasfortwowholedaysontheirown.3.

Ifpeoplefindbabypandasalone,theywilloftentakethemaway.4.

Ifgiantpandasareindanger,whatcanwedo?5.

encouragefarmerstoleavethegiantpandasreserves/encouragesb.todosth.4/136.

IfIdon’tbuythem,someoneelsewillbuythem.7.Ifwecontinuetobuild

roads,theywon’thavesuitablehomes.8.

Babygiantpandasspendalotoftimedrinkingtheirmum’smilk–uptofourteenhoursaday!/spendsometimedoingsth.9.

Mothergiantpandashaveonlyoneortwobabiesatatime.10.

Theirnumberisgettingsmallerandsmallerbecausetheirlivingareasarebecomingfarmlands..11.

Iffarmerskeeptakingtheland,giantpandaswillhavenowheretolive.5/13语法：条件句引导条件状语词或词组有：if(假如，假如),unless(除非，假如不)，solongas(只要)，aslongas(只要)，incase(假如，万一)，ifonly(只要),onlyif(假如)等。如：(a)IfitisfinenextSunday，weshallhaveaspringouting．假如下星期日天气好，我们就去春游。(b)Youwillnotpasstheexamunlessyoustudyhard．假如你不努力学习，就不会经过考试：(c)Iwillgothereaslongasheinvitesme.只要他邀请，我就去那里。(d)Takeanumbrellawithyouincaseitrains.你带把伞，以防下雨。6/13If引导条件句▲条件句表示未来可能发生情况If引导条件句能够表示未来“可能”发生情况，即主句事态发生有赖于条件分句事态发生。此时说话人或是把条件视为事实。或者仅仅提出条件，不作任何主观构想，假如条件实现，主句内容便成为事实，假如条件不实现、结果也就不会发生。普通条件分句动词用普通现在时形式，主句动词用will／shall-不定式普通未来时形式。如：(a)Ifitstopsraining，I'llgoforawalk.假如雨停了，我就去散步。(b)Ifitdoesn'tstopraining,I’llstayathome．假如雨不停，我就呆在家里。(c)Ifit'sready,he'llbringittomorrow．假如准备好了，他明天就把它带来。(d)Whatareyougoingtodoifitrains?假如下雨，你们要干什么?(e)Ifyoudon'thurryandgettherebeforefiveo'clock，he'llleavetheofficeandgohome．假如你不快点，在五点前到那儿话，他就会离创办公室回家。(f)Ifhehasfinishedhisworkbysixo'clock，weshallbeabletotakehimwithus．假如他到六点完成工作话。我们就能够带他一起去。(当条件状语从句强调动作完成时，从句中用现在完成时比用普通现在时更确切。)7/13▲条件句表示重复性、可预见情况If引导条件句也能够表示重复性、可预见情况或习惯动作，此时条件分句动词用普通现在时，主句动词也用普通理在时。如：(a)Tigersliveasafamilyiftheyhavebabies．假如老虎有了虎崽话，它们就群居。(b)Ifapolarbearishungry，itcatchesfishfromthewater．假如北极熊饿了，它就从水里抓鱼。(C)Iflionsliveinthewild，theylookforfoodthemselves．假如狮子生活在野外，它们就自己寻找食物。(d)Ifwetrainelephants，theydoheavyworkforus．假如我们训练象话，它们能为我们干重活。(e)Ifitrains,Igotoworkbytaix．假如天下雨，我乘出租车上班。(f)IfImakeapromise，Ikeepit.假如我许诺，我就信守诺言。8/13▲条件句表示真理和事实

If引导条件句还能够表示普遍真理和客观事实，在这种条件句中，if意义靠近于whenever，可成“当……时候”。此时条件分句动词用普通现在时，主句动词也用普通现在时。如：(a)Ifyouheatice，itmelts．冰受热会融化。(b)Ifyoupouroilonwater，itfloats．将油倒在水上，油会浮在表面。(c)Ifthetemperaturedropsto0°C，waterfreezes．当温度降至O°C时水结冰。9/13

[注意]if还可引导宾语从句，试比较：(a)We'llgotovisittheGreatWallifitdoesn'traintomorrow．假如明天不下雨，我们就去长城。(b)Wedon'tknowifitwillraintomorrow．我们不知道明天是否会下雨。这里第一句中if引导是条件从句，第二句中if引导是宾语从句，意思为“是否”，从句中时态依据主句时态而定。另外，whether也可用于引导宾语从句，可与if替换；但whether可与or连用，而if不能。如：(a)Iwanttoknowwhether／ifshestilllivesthere．我想知道她是否还住在那里。(b)Heaskedwhether／ifyoureceivedtheletter．他问你是否已经收到了那封信。(c)Doyouknowwhether／ifthey’llleaveforJapan．你知道他们是否要去日本。(d)Pleasetellmewhetheryoucancomeornot．请告诉我你是否能来：(此句不可用if替换)10/13练习：I.Completethesentenceswiththecorrectformofthewordsinbrackets.1Canyoufindanymistakesinthe___________(follow)sentences?2Giantpandasarequietand____________(peace)animals.3Iftigershavebabies,they____________(live)asafamily.4Ithinkit's____________(danger)totouchwildanimals.5Becareful!Thereare____________(wolf)inthemountain.11/13II.CompletethesentencesaccordingtotheChineseprovidedinbrackets.Usethecorrectformofthewords.

1CanJimworkoutthismathsproblem____________(单独地)?2Weshouldtryourbestto____________(保护)wildanimals.3InAustralia,NewZealandandSouthAfrica,sharks____________(攻击)peopleeveryyear.4MrWualways____________(勉励)ustoworkhardinourlessons.5Ifhuntersdonothunt,tigerswill____________(生存).6____________(遗憾地是),wedon'tseemtohavemuchchanceofwinningthematch.12/13III.Fillintheblankswiththecorrectformoftheverbsinbrackets.1Ifhe____________(come)heretomorrow,he____________(see)hisfather.2Thestudentsarebusy____________(get)readyfortheirlessons.3Whenthetraffic____________(stop),youcancrosstheroad.4Ifyou____________(notstudy)hard,you____________(notpass)theexam.5They____________(help)thefarmers____________(pick)applesifit____________(notrain).6Pleasegivemeacallafteryourparents____________(arrive)inShanghai.