状语从句,定语从句、宾语从句的省略.pptVIP

;; :什么时候可以省略?怎么省略? 在含有状语从句的复合句中若从句的主句是it或与主句的主语相同，且在谓语中含有be时，常省略从句的主语和be。 ;一、 在含有状语从句的复合句中 1.when，while，as, once，whenever引导的时间状语从句； 2.if，unless引导的条件状语从句； 3.though，although，even if ，even though引导的让步状语从句； 4.as though，as if，as引导的方式状语从句； 5. wherever引导的地点状语从句 ;:省略在As if引导的方式状语从句中应用的较多. ;ordered;tired;去掉being;定语从句和宾语从句的省略;ordered;tired;去掉being;如何写指导性说明文;;;a knowledge of;If you have mastered a knowledge of first aid，it is likely that you can save someone’s life before a doctor can be found.;If a person stops breathing，it is important that you start his breathing at once.;Close his nose with your fingers and breathe into his mouth until he begins to breathe again.;...open the doors and windows to let the fresh air in as quickly as possible.;本部分内容讲解结束