初中语法之if条件状语从句课件市公开课一等奖省赛课微课金奖课件

If从句（条件状语从句）初中语法之if条件状语从句课件第1页1/21主句+if条件状语从句

if条件状语从句，+主句（从句后加逗号）if条件状语从句要用普通现时。句型结构时态If条件状语从句初中语法之if条件状语从句课件第2页2/21IfI’mhungry,Iwill______________.IfI’m

tired,Iwill_____________.Lookandsayeatsomefoodhavearest初中语法之if条件状语从句课件第3页3/21IfI’mill,__________________.

IwillseeadoctorLookandsayIfI’mlate,_________________.Iwillsaysorry初中语法之if条件状语从句课件第4页4/21

Ifitrainstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’trainIwon’t________________.playbasketball初中语法之if条件状语从句课件第5页5/21Ifyouarefreethisweekend,whatwillyoudo?IfIamfree,…sleepwatchTVplaycomputergamespractice初中语法之if条件状语从句课件第6页6/21grammarif条件状语从句(2)句子特点：1.if从句中用普通现在时，表示未来一个条件，从句中能够加时间状语。2.当if表示未来条件时，主句中用普通未来时。句型结构：主句+if条件状语从句

if条件状语从句，+主句（从句后加逗号）3.时态：if普通现在时，+主句普通未来时或（can/may/must+v.)初中语法之if条件状语从句课件第7页7/21e.g.1.Ifyoudon’tgetupearly,youwillbelateforschool.你假如不早点起床，上学就会迟到。2.IfIplaygamesonit,itwillgowrong.假如我用它玩游戏，它就会坏掉。3.Ifyoufinishthehomework，youcangohome．假如你作业做完了就能够回家了。4.Ifyouwanttoloseweightyoumust/shouldeatlessbread.假如你想减肥，你必须少吃面包。5.Ifyouheaticeitturnstowater.(也可用willturn)假如把冰加热，它就会化成水。初中语法之if条件状语从句课件第8页8/21if条件句不普通,几个关键点记心间。条件句放在前,逗号要放句中间。条件句表可能,主句多用未来时；条件句表事实,主句惯用现在时。if条件句有特点,现在时把未来替；这个规则要切记!if条件句歌诀初中语法之if条件状语从句课件第9页9/211.Ifhe____________(not,doit),I___________(do)it.2.Ifyou____(be)lateforschool,myteacher________(be)angry.arewillbe3Ifshe________(win)theprize,we_______(be)happy.winswillbe4.IfI_________(not,eat)somuch,I_________(get)thinner.5.Ifyou______(tell)them,they_____________(not,believe)you.don’teatwillgettellwon’tbelieve6I_________(stay)athome,Ifit__________(rain).7.Ifit____________(not,rain),I_________(go)out.8.we__________(play)football,Ifitis_________(sun).9.Ifshe__________(become)astar,herparents____________(not,send)heraway

10.He_________(watch)TV,ifhe______(be)free.willstayrainsdoesn’trainwillgowillplaysunnybecomeswon’tsendwillwatchisdoesn’tdowilldoExerciseTime初中语法之if条件状语从句课件第10页10/21---I’malwaystiredinthemorning.---Ifyougotobedearly,youwon’tbetiredinthemorning.Givingsuggestions:初中语法之if条件状语从句课件第11页11/21---IgetthirstywhenIrun.---Ifyoutakesomewaterwithyou,youwon’tgetthirstywhenyourun.初中语法之if条件状语从句课件第12页12/21Iworrysomuchaboutmyschoolwork.---Ifyoualways

workhard,youwon’tworryaboutyourschoolwork.Youshould

workhard!初中语法之if条件状语从句课件第13页13/21Unit3activity1Rewritethesentenceswithif:Listeninclass,oryouwon’tunderstandwhattodo.Ifyoudon’t

listeninclass,youwon’tunderstandwhattodo.1)Eatsomebreakfast,oryou’llgethungryatschool.2)Hurryup!We’llbelate!3)Readtheinstructionscarefully.Thenyou’llknowwhattodo.Ifyoudon’teatsomebreakfast,you’llgethungryatschool.Ifyoudon’thurryup,we’llbelate.Ifyoureadtheinstructionscarefully,you’llknowwhattodo.初中语法之if条件状语从句课件第14页14/21Activity2.Completethesentences—Iwanttogethighscores.—If__________________________(workhard/dowell)youworkhard,youwilldowell.1.-howcanIremembermyfriends’birthdays?-If_______________________________________(keepanoteinyourdiary/notforget).2.-It’slate,butIdon’twanttogotosleep.-If_______________________________________(notgetenoughsleep/feeltiredatschool).youkeepanoteinyourdiary,youwon’tforget.youdon’tgetenoughsleep,you’llfeeltiredatschool.初中语法之if条件状语从句课件第15页15/213.-Idon’tlikespeakingEnglishoutsidetheclassroom.-If_______________________________________(notpractice/notimprove).4.-ShouldItellmyteacherIdon’tunderstandthehomework?-If_______________________________________(nottellher/shenotabletohelpyou).5.-IsitOKifIwatchTVforsixhours?-If_______________________________________(youwatchtoomuch/eyeshurt).youdon’tpractice,youwon’timprove.youdon’ttellher,shewon’tbeabletohelpyou.youwatchtoomuchTV,youreyeswillhurt.初中语法之if条件状语从句课件第16页16/21summaryif使用方法2.引导条件状语从句：译为“假如，假如”(1)if从句+祈使句(2)if从句+主句（普通未来时）1.引导宾语从句：译为“是否”，表示不确定概念。Idon’tknowifyourfathercancometogether.Canyoutellmeifmissyourparents?初中语法之if条件状语从句课件第17页17/21e.g.IfIwereyou,Iwouldinvitehimtotheparty.假如我是你，我会邀请他参加聚会。Ifhehadhurried,hecouldhavecaughtthetrain.假如他抓紧点，他会赶上火车。IfIweretogoabroad,IwouldgotoAmerica.假如我出国了，我会去美国。3.非真实条件句（虚拟语气）：表示不可实现条件或根本不存在条件。从句多用普经过去时或过去完成时，表示对现在或过去一个假设。初中语法之if条件状语从句课件第18页18/21()6.─Mikewantstoknowif____apicnictomorrow.─Yes.Butifit_______,we'llvisitthemuseuminstead.A.youhave/willrain

B.youwillhave/willrain

C.youwillhave/rains

D.willyouhave/rains()7.Ireallydon'tknowifshe_______itwhenshe________.

A.finds/arrives

B.finds/willarrive

C.willfind/willarrive

D.willfind/arrives（）4.Idon’tknowif______tomorrow.A.itdoesn’trainB.therainwillstopsC.therainswon’tstopD.itwon’train（）5.Thevolleyballmatchwillbeputoff(推迟）ifit______.A.willrainB.rainsC.rainedD.israining（）1.Becareful,ifyou______wanttomakemistakes.