初中英语语法知识——连词一、并列连词1.并列关系的and和，又aswellas也，和both…and…既…又….neither…nor…既不…也不….(就近原则)TomandLilylikedrawing.TomaswellasLilylikesdrawing.aswellas就远原则—就前原则IaswellasmyclassmatesamgoingtoBeijingtomorrow.2.转折关系but但是however但是，然而Wealltiredourbest,however,welostthegame.Wealltiredourbest,butwelostthegame.3.选择关系or或者either…or…或者…或者…;要么…要么….(就近原则)WhichdoyoulikebetterEnglishorChinese?EitherMaryorheisgoingtoParis.Onlyonepersonmaygothere.orShelikesplayingfootballandplayingthepiano.Shedoesn’tlikeplayingfootballorplayingthepiano.否定句中表并列关系用orWhichdoyouprefer,EnglishorChinese?表示选择关系用orDon’tstayup,oryouwillbetired.or否则，要不然stayup熬夜祈使句+and/or+陈述句。and表示顺承关系“这样的话”or“否则，要不然”Hurryup,oryouwon’tcatchtheearlybus.快点，否则你不会赶上早班车。Hurryup,andyouwillcatchtheearlybus.快点，这样的话你就能赶上早班车。祈使句+or+陈述句=if引导的条件状语从句。Hurryup,oryouwillbelate.2\nIfyoudon’thurryup,youwillbelate.whether…ornot无论与否Whetheryoulikeitornot,youmustdoit.moreorless或多或少orso大约，左右believeitornot信不信由你4.因果关系because因为becauseof因为，由于so所以英文中because/becauseof不能与so同时在一个句子中连用。Heworkedhard,sohepassedtheexam.Hewaslate,becauseoftheheavyrain.Hewaslate,becausetherainisheavy.because后跟完整句子。becauseof后跟名词／代词短语（不完整的句子）二、从属连词从属连词+从句—宾语从句／状语从句宾语从句—that/ifwhether/wh-how-让步状语从句Although/thought/evenif/eventhough等词引导的让步状语从句不能与but连用。（虽然….但是….／尽管….）Althoughheistired,heisstillpracticingthepiano.Heistired,butheisstillpracticingthepiano.not…until…直到…才….Hedidn’tleavetheclassroomuntilhefinishedhishomework.条件状语从句—主讲从现—主句用一般将来时，从句用一般现在时—主句用过去将来时，从句用一般过去时if如果aslongas只要Ifitdoesn’train，wewillgototheparktomorrow.从句主句2
