If引导的条件状语从句ppt课件.ppt

If引导的条件状语从句 1 语法 例句 Ifpeopleobeythetrafficrules therewillbefeweraccidents if引导的条件状语从句 if 从属连词 意思是 如果 假如 倘若 从句 主句 Therewillbefeweraccidentsifpeopleobeythetrafficrules 原句可改为 if引导的条件状语从句既可以放在句子前 也可以放在句子后 从句位于主句之前时 常用逗号将其与主句隔开 结构 2 Ifitrainstomorrow Iwillstayathome Ifyouarehard working yourparentsmayfeelhappy Studyhard ifshewantstogetgoodgrades 主将从现 主情从现主祈从现 3 if引导的条件状语从句和if引导的宾语从句的区分 If在宾语从句中翻译为 是否 If在条件状语从句中翻译为 如果 I llgotoseeyouifIamfreenextweek Iwanttoknowifheisateacher whether 1 if在句中的含义不同 4 2 if在从句中的位置不同 If引导的宾语从句放在主句之后 而if引导的状语从句可放在主句之前也可放在主句之后 Ifitdoesn train Iwillgoouttomorrow Iwillgoouttomorrowifitdoesn train Idon tknowifthetrainhasarrived 5 找出下列句子中哪些是if条件状语从句 哪些是if宾语从句 1 Canyoutellmeifshecancometothemeeting 2 Shewillnotgothereifitisrainytomorrow 3 Ican tguessifshewillbeangry 4 Ifwehelpeachother webothwillgetgoodresults 6 3 时态要求上有区别 口诀 If引导条件状语从句的时态为一般现在时记住 主将从现 1 Iwanttoknowifthereasportsmeetingnextmonth doesn train willbe 2 Ifit we llholdit If引导的宾语从句的时态由主句及本身时态决定 If是否 一般将来 if如果 一般现在 7 Sam doyouknowifAlice tomypartynextweek Ithinkshewillcomeifshe free Acomes isBwillcome willbeCwillcome isDcomes willbe 8 If引导的条件状语从句的练习 1wedon tknowifit tomorrow ifit wewon tgohiking snow Thesenseofhappinesswillincreaseifyou whatyouliketodo do 3Ifshe notget upearly she llmisstheearlybus 4bequick please oryouwillbelateforschool you quick youwillbelateforschool 9 1 Ifyou totheparty you llhaveagreattime A willgoB wentC goD going2 I hertheanswerifshe me A cantell willaskB willtell willaskC wouldtell askD willtell asks C D 3 Whatareyougoingtodotomorrow We llgotothelibrarytomorrowifit A isn trainB rainC won trainD doe