SectionA(GrammarFocus)Unit8Let’sCommunicate!(Period3)ReadandthinkFindthesimilarities(相似性)ofthesesentences.Ifshehastime,shehelpshermomwithhousework.

Plantsdieiftheydon’tgetenoughwater.Ifitrainstomorrow,wewillstayathome.

Youwillmissthebusifyoudon’thurryup.這些句子都包含if

從句。Readthesentences.Findmoresentenceswithif-clausesinSectionA.3aIfyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.Ifyoucan’tmeet,justcallyourfriend.Ifitisstillhardtotalk,takeabreak.Ifyoucancome,I’llbeveryhappy.Ifyouwanttomakesomenewfriends,thisisagoodchance.Ifyoutalkto...,Ithinkhe/shewillbehappytohelpyou.Moresentenceswithif-clausesinSectionA:1.這些句子在結(jié)構(gòu)上有什么共同特點(diǎn)？由哪些部分組成？

引導(dǎo)詞是什么？主句和從句分別用什么時(shí)態(tài)或結(jié)構(gòu)？2.這些句子的表意功能是什么？Let’slearn零條件句和第一條件句(Zeroandfirstconditionals)Zeroconditionals（零條件句）：指表達(dá)客觀真理（如科學(xué)事實(shí)）或習(xí)慣性動(dòng)作的句型。Firstconditionals（第一條件句）：用于描述將來可能發(fā)生的情況。條件句類型if從句主句（謂語(yǔ)動(dòng)詞）零條件句If+一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)第一條件句If+一般現(xiàn)在時(shí)will/begoingto+動(dòng)詞原形零條件句(Zeroconditionals)1.結(jié)構(gòu)：If+一般現(xiàn)在時(shí),主句+一般現(xiàn)在時(shí)（或祈使句）.Ifyoumixredandblue,yougetpurple.2.特點(diǎn)：表達(dá)永恒真理、科學(xué)事實(shí)或反復(fù)發(fā)生的習(xí)慣，結(jié)果必然發(fā)生。3.時(shí)態(tài)：主從句均用一般現(xiàn)在時(shí)，強(qiáng)調(diào)“必然結(jié)果”。Ifwaterfreezes,itbecomesice.適用情況：客觀真理/習(xí)慣性動(dòng)作第一條件句(Firstconditionals)1.結(jié)構(gòu)：If+一般現(xiàn)在時(shí),主句+will+動(dòng)詞原形（或情態(tài)動(dòng)詞/can/may/should等）.Ifitrainstomorrow,wewillstayathome.2.特點(diǎn)：表達(dá)將來可能發(fā)生的條件和結(jié)果，結(jié)果發(fā)生的可能性較高。3.時(shí)態(tài)：從句用一般現(xiàn)在時(shí)表將來，主句用“will+動(dòng)詞原形”表將來的動(dòng)作。Ifyoustudyhard,youwillpasstheexam.Hemaycomeifyouinvitehim.適用情況：將來可能的情況拓展1.第一條件句通常可與以下句型相互轉(zhuǎn)換：(1)祈使句

+and/or+一般將來時(shí)的句子.eg:Ifyouarequick,youwon’tbelateforclass.=Bequick,andyouwon’tbelateforclass.=Bequick,oryouwillbelateforclass.(2)含有介詞with或

without的句子eg:Ifthereisnowater,wecan’tlive.=Wecan’tlivewithoutwater.2.if從句位置：if引導(dǎo)的條件狀語(yǔ)從句可以放在主句前，也可以放在主句后。

當(dāng)if

從句在主句前時(shí)，從句后要用逗號(hào)與主句隔開；當(dāng)if從句在

主句后時(shí)，不用逗號(hào)隔開。Ifyoustaycalmandsaysorry,itwillhelp.=Itwillhelpifyoustaycalmandsaysorry.Matchthetwopartstomakesentences.3b1.Ifwehaveaface-to-facemeeting,2.IfIhavegoodnews,3.Ifyouneedtoleave,4.Ifyoucanfinishyourworkearlytoday,5.Iftheoldmanhasdifficultiesinhearing,6.Ifyoucan’treachherbyphone,trytexting.B.we’llunderstandeachotherbetter.C.youcanwritethingsdownforhim.D.I’llcallyourightaway.E.I’llcallataxiforyou.F.willyoujoinmefordinner?1.Ifwehaveaface-to-facemeeting,we’llunderstandeachotherbetter.2.IfIhavegoodnews,I’llcallyourightaway.3.Ifyouneedtoleave,I’llcallataxiforyou.4.Ifyoucanfinishyourworkearlytoday,willyoujoinmefordinner?5.Iftheoldmanhasdifficultiesinhearing,youcanwritethingsdownforhim.6.Ifyoucan’treachherbyphone,trytexting.meetingn.

會(huì)面；會(huì)議hold/have/callameeting舉辦/召開/召集會(huì)議attendameeting參加會(huì)議atameeting在會(huì)議上difficultyn.

困難；難題rightaway立即；馬上...Ifthings_________(go)well,we_________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,_________(drop)mealineandI_________(give)youallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.Hey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimetomakeaplanforourtraining.Ifwe_________(start)earlierthisyear,Ithinkwe__________(perform)better._________(give)meacalland_________(let)meknowifyou_________(think)ofagoodtimeforeveryonetomeet.Talktoyousoon!Readandthink1.Whatkindoftextsarethey?2.Whatformsofcommunicationaretheyconnectedwith?3.Whendopeoplewritenotes?4.Doyouoftensendvoicemessages?Whendoyouusethisformofcommunication?Fillintheblankswiththecorrectformsoftheverbsinbrackets.Thendiscusswhatthesituationsareandwhomtheinformationisfor.3c...Ifthings_________(go)well,we_________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,_________(drop)mealineandI_________(give)youallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.Hey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimetomakeaplanforourtraining.Ifwe_________(start)earlierthisyear,Ithinkwe__________(perform)better._________(give)meacalland_________(let)meknowifyou_________(think)ofagoodtimeforeveryonetomeet.Talktoyousoon!gowillseedropwillgivestartwillperformGiveletthink...Ifthingsgowell,wewillseeallthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,dropmealineandIwillgiveyouallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.linen.

字行；便條；線dropsbaline給……寫信seriouslyadv.嚴(yán)肅地；認(rèn)真地detailn.

細(xì)節(jié)；詳情reunionn.

團(tuán)聚；重逢；聚會(huì)...Ifthingsgowell,wewillseeallthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,dropmealineandIwillgiveyouallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.situation圍繞聚會(huì)相關(guān)的假設(shè)交流whom邀請(qǐng)參加聚會(huì)的對(duì)象Hey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimet