Unit 4 Discovering Useful Structures 课件-2022-2023学年高中英语人教版（2019）必修第一册

定语从句 That is the girl (whom) mom talked to yesterday. 1.定语从句所修饰的词叫先行词。 2.定语从句用关系代词或关系副词来引导。 3.关系词放在先行词与定语从句之间起连接作用，同时又做从句中的一个成分。 4.定语从句可分为限制性定语从句和非限制性定语从句。 先行词-------关系词--------定语从句 关系词在从句中做一个成分 限制性定语从句 用来修饰和限定先行词，与先行词间的关系非常密切。如果去掉，则意思含混不清。 例：A doctor is a person who cures patients. 医生就是治疗病人的人。 This is the telegram (which/that) he refers to. 这就是他提到过的电报。 非限制性定语从句 起补充附带说明作用，其前后都需要逗号隔开。 例：My house, which I bought last year, has got a lovely garden. 我去年买的那一幢房子有一个漂亮的花园。 This note was left by Tom, who was here a moment ago. 这个短息是Tom留下的，不一会儿前他还在这里。 先行词-------关系词--------定语从句 人 who 做主、宾、表语 关 人 whom 做宾语 系 物 which 做主、宾、表语 代 人或物 that 做主、宾、表语 词 人或物 whose 做定语 物/事 as 做主、宾语 关 时间名词 when 做时间状语 系 地点名词 where 做地点状语 副 原因名词 why 做原因状语 词 关系代词的用法 关系代词指代的是先行词 1. who、whom who在从句中做主语、宾语；whom在从句中做宾语，可省略。 例：Mark was another teacher who was very influential. 马克是另外的一位非常有影响力的老师。 Mark had planned to find four musicians who could act as well as sing. 马克打算找到四位既能唱歌又能表演的乐手。 These are the workers (whom) he employs. 这些事他雇佣的工人。 2. whose whose既可指人，也可指物。在定语从句中做定语。 例：Do you know the girl whose Japanese is excellent? 你认识那个日语非常优秀的姑娘吗？ Workers built shelters for survivors whose homes had been destroyed. 救援人员为那些家园被毁的幸存者盖起了避难所。 I was born in Tongxiang, a city whose name will create a beautiful picture. (whose指的是a city, 做name的定语) 3. which which指物，在定语从句中做主语、宾语。 例：However, there are still two other sharks