资源描述：
《新编英语语法教程第31讲.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、从属连词A）简单从属连词B）复杂从属连词C）关联从属连词D）边际从属连词because,for,since,as,nowthat等的用法because与for的区别1。because比for语势较强2。for用于正式语体，比较书卷气。3。because位置灵活，可位于主句前，或后。for只可位于主句之后。4。because可用于单独回答why问句，for不可以。because,for,since,as,nowthat等的用法5。because之前可带否定词或其它修饰语，还可带并列连词，for不可以。6。because可作分裂
2、句中心万分，for不可以。because,for,since,as,nowthat等的用法because,since,as区别1。because语势最强，since次之，as再次之2。because通常表示新信息，since/as则表示已知信息。3。在回答why问句时要用because，不用for，也不用since/as4。because可以作分裂句的中心成分，for不能，since/as也不可以。because,for,since,as,nowthat等的用法5。because分句前可用否定词或其他修饰语，还可用并列连词，
3、但for不可以，同样since/as也不可以。6。since/as表示已知原因，所以常出现在句首，与for不同。作业：31E1.BeforeJohncamehome,Ihadfinishedreadingthenewspaper.2.Whilewewereeatingdinner,…3.…whenHarryentered.4.SinceIgraduatedfromhighschool,…5.BeforeIreadthatbook,Imust6.AfterJohnnyfinishedhishomework,he…7.Befor
4、eIservethedessert,youmust…8.BeforeIcametotheUnitedStates,Ihad…9.WhenIgottoschoolyesterday,Ifound…10.…sinceyoumovedawayfromtheneighborhood?11.I’llbebusyshoppinguntilthestore…12.WhileI’mstudying,Iliketo…13.WheredoyoustaywhenyouvisitWashington?14.WhileI’minthiscountry
5、tostudy,Ihopeto…15.Whilethebabyisnapping,hermotherhasachancetorest.16.Aftertheorchestrahadplayedforseveralhours,theembassy…17.…untilhegothisB.A.degree.18.Nosoonerhadthecriminalfoundashelterthanhewas…19.…untiltheweatherisdryinthesummer.20.Ihavebeenwearingglassesever
6、sinceIenteredtheuniversity.1.…lookslike,forIhavenevermethim.2.…simplybecause…3.…because/foralltheshopshaveclosed.4.…notbecause…butbecause…5.Itwassimplybecause…6.Sincetheweather…7.Justbecausehewas…8.Itmustbeearlymorning,because/forthebirdsaresinging.9.…becauseheispo
7、or?10.Sincethestreets…11.…whenthetelephonerang.12.Justaswe…13.Melbournslammedthedoor,sothatheawakenedhismother.14./15.Whileinappliedphysics…16.Sneerunkindlythoughyoumay…17.…thoughitraintomorrow.18.…eventhoughIpreferabath.19.Since/Ashewasill,…20.Acceptableininformal
8、style,butinformalstyle“because”shouldbechangedinto“that”.
