内容正文:
单元语法专题( Grammar focus) 语法知识专讲 宾语从句(一) 宾语从句是在复合句中作宾语的句子,主从句之 间常用一个引导词连接。 一、宾语从句的引导词 1.宾语从句具有陈述意义时用that引导。that无具 体意思,不作任何成分,在口语或非正式文体中常 常省略。 e.g.: He said (that) he decided to go for a picnic with his classmates 2.当宾语从句由一般疑问句变化而来时,用if或 whether来引导从句,意为“是否”。 e.g.: Do you know if/ whether she can pass the exam? 【注意】如果与 or not连用时,只能用 whether,不能用if。 二、宾语从句的语序 无论宾语从句的主句是陈述句还是疑问句,也不 管主从句之间是什么引导词,宾语从句一律要用陈述 句的语序,即“引导词十主语十谓语十其他”。 e.g.: We don t know if there is a park near here. 宾语从句的时态 如果主句是一般现在时,则宾语从句可根据句意 的需要选用任何一种时态;若主句是一般过去时,则 宾语从句用表示过去的某种时态 e.g.: They said (that) they were playing chess at that time 如果宾语从句表示客观真理、自然现象、谚语、格 言等,不论主句用何种时态,从句一律用一般现在时 e.g.: The geography teacher told us that the earth goes around the sun. He said that time is mone 四、宾语从句的否定转移 当主句的谓语动词是 t hink, believe, guess等,并 且主语为第一人称时,从句的否定词应转移到主句谓 语动词上来。 e.g.: I don t think the T-shirt costs so much 语法知识专练 单项填空。 )1. When H7N9 bird flu first appeared, people didnt know doctors could cure it B tha C what D wh ()2.(2018·随州)— wha