定语从句 1.先行词为all,anything,something,nothing,everything,much,little,none等不定代词时,关系代词一般只用that,不用which。在大多数情况下that可以省略. Pleasetellmeeverything(that)youknowaboutthematter. That’sall(that)wecandoatthemoment. 2.as引出的限制性定语从句 在such…as的结构中as可作关系代词,引出限制性定语从句。有时和same连用,在从句中可作主语、宾语或表语等。 Suchpeopleaswererecommendedbyhimwerereliable. I’veneverseensuchatalentedyoungmanasheis. Ihavethesametr oubleasyou(have). 3.as引出的非限制性定语从句 as可作关系代词引出非限制性定语从句,代替整个主句,通常译为“(正)如…一样”,“(正)象…一样”等。as引导的从句一般用逗号与主句隔开,可以位于主句的前面、中间或后面. Ilivealongwayfromwork,asyouknow. Shedidnot,asherfriendhadfeared,breakdown. Asisgenerallyaccepted,economicgrowthisdeterminedbythesmoothdevelopmentofproduction.