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B2U1Grammar限制性定语从句和非限制性定语从句Learningaims:通过观察例句，能够归纳出限制性定语从句和非限制性定语从句的区别，以及as和which引导非限制性定语从句的区别，并能在练习中正确的使用。Step1.RevisionStep2.限制性定语从句和非限制性定语从句的区别知多少Step3.as与which引导非限制性定语从句的区别Step4.SummaryStep5.Classtest1)Theoldmanhasthreesonswhoarealldoctors.2)Theoldmanhasthreesons，whoarealldoctors.英译汉。Practicemakesperfect!这位老人有三个都是医生的儿子。这位老人有三个儿子，他们都是医生。语法填空Practicemakesperfect!1）Shehastwobrothers__________areteachinginthesameschool.2）Shehastwobrothers,_________areteachinginthesameschool.3）Ourmonitor,_________weareproudof,didn’tpasstheexam.4）Hangzhouisnotthesamecity________wehaveseeninotherplaces.who/thatwhowhomasPerfect,noexercise!改错Practicemakesperfect!1）Helosthisnewipone6s,thatmadehimverysad.2）Hewaslate,whichisoftenthecase._____which______as1）我在学英语中有些困难，这使我很难过。2）正如我们知道的，熟能生巧。3）幸运的是，我们有很多乐意帮助我们的老师.4）我希望我能学好英语的这天早点到来。翻译句子。（用限制性或非限制性定语从句）Practicemakesperfect!IhavesomedifficultyinlearningEnglish,whichmakesmeverysad.Asweallknow,practicemakesperfect.Luckily,wehavemanyteacherswhoaregladtohelpus.IhopethedaywhenIcanlearnEnglishwellwillcomesoon.Step5.Homework(aim2)学考评价作业Page5Ⅰ，Ⅱ。