(共18张PPT)
非限制性定语从句
Apply non-restrictive clause in speaking and writing
Understand the formation, rules and usages of non-restrictive clause
Learning aims
Distinguish non-restrictive clause from restrictive clause
Free talk
If you were going to select the most influential scientist of the 20th century, who would you choose. Why
They tested hundreds of Chinese medical treatments that showed promise in the fight against the disease.
Tu Youyou was awarded the Nobel Prize, which is considered one of the highest international honours a person can receive.
Tu Youyou went to Hainan, where malaria was more common, to study malaria patients.
Later, the medicine was tested on malaria patients, most of whom recovered.
Group work: Identify the formation and the structure
Restrictive clause
Non-restrictive clause
Formation:
antecedent + relative pronouns/adverbs+clause
_______ is commonly known, Nobel Prize is a great honour for any scientist to be nominated.
Tu Youyou is the first Chinese scientist, ________ received the Nobel Prize in Medicine.
The reason _________Tu is recognized is that she has committed herself to the treatment of malaria.
At the age of 84, Tu was awarded the Nobel Prize, _______ demonstrated people’s great admiration for Chinese scientists.
Tu still lives in Beijing now,________ she prefers to stay out of spotlight and focuses on her scientific work.
In 20th century, ________great intellectuals are needed for social advancements, Tu’s name certainly comes on the top of the icon list.
who
which
where
when
As
why
Retell Tu’s story
Pairwork: Identify the use of relative pronouns and adverbs
Discussion: Explore the use of relative pronouns/adverbs
Cross-examination Referring to humans Referring to things Possessive
Restrictive who, whom, that* which, that whose
Non-restrictive (,) who, whom which as whose
Relative adverbs
when where,why
when, where
Rules: 1. In NRC, “Which” and “As” refer to a whole sentence.
2. “Why”and “That” are not used in NRC; 3. Comma(,) is a symbol in NRC.
who
which
whose
when
Consolidation: Spot and correct mistakes
去掉,
Chinese scientists, that work behind the scenes, win international recognition.
Chinese government pays attention to scientific research, where is critical to the country.
We are proud of Tuyouyou, who name shall be remembered throughout the history.
Icons in scientific area make great contributions to the 20th century, which people’s life has changed greatly.
The reason, why we respect icons, is that we admire their achievements.
What aspects do NRC differ from RC
功能
先行词
逗号
关系代词省略
Aspects of differences
restrictive relative clauses
non-restrictive relative clause
1. We'll always remember the scientist who discovered the cure for malaria.
2. She's a person whose
contribution goes down the history.
1. Beijing, where Tu spent years finding the cure, is the center of medical research in China.
2. Nobel Prize, whose name came from a scientist, has been awarded to many over the years.
which scientist
若去掉,不影响句子含义
若去掉,句子含义不明确
which person
无逗号与主句隔开
有逗号与主句隔开
Observe and Discuss: Identify the differences
先行词为明确的名词
先行词为不具体的名词
Differences Restrictive clause Non-restrictive clause
Definition定义 必要信息 非必要信息
Function功能 修饰,限定 补充说明
Comma逗号与否 无逗号 有逗号
Antecedent先行词 普通名词或代词 专有名词或意义明确的名词
Omission of relative pronouns 省略关系代词 可以省略
不可以省略
Group work:
Fill in the table of comparison
假定你叫李华,你的英国朋友Jackson向你了解首位华人诺贝尔生理学或医学奖获奖者屠呦呦。请你用英语给Jackson写一封信。
要点如下:
1. 屠呦呦的基本信息(包括出生时间、受教育状况等)。
2. 屠呦呦所取得的成就。
3. 屠呦呦给你的影响。
注意:
1.词数80左右。
2.可以适当增加细节,以使行文连贯。
A Writing Task
Tu Youyou ___________________________ (出生于1930年12月30日), __________________________(对医学感兴趣) when she was young. She worked on medical researches in 1955, _____________________________________________ (那时她毕业于北京大学医学院). She was completely absorbed in medical research. Having tried over 380 times, she finally succeeded in developing artemisinin, _______________________________ (这是一种至关重要的治疗疟疾的新疗法). Because of her great contributions and devotion to the medical field, she was awarded the Nobel Medical Prize in 2015,_____________________ (她的故事鼓励我要执著于热爱之事)。
who showed interest in medicine
was born on December 30 in 1930,
when she graduated from Beijing Medical University.
which is a crucial new cure for malaria.
whose story inspired me to persist
in what I love.
SAMPLE
Presentation
Self-review and peer review.
Share and present your poster design.
How can we learn grammar efficiently
Assignment: Create your own mind map
功能
先行词
结构
关系代词省略
SAMPLE
Reference for further self-study:
https://esllibrary.com/blog/restrictive-non-restrictive-adjective-clauses
https://learnenglish.britishcouncil.org/grammar/intermediate-to-upper-intermediate/relative-clauses-non-defining-relative-clauses
Further study
Thank you!