Words
cause
n.原因，起因/ v.造成，引起
energy-saving的词性
adj.
生态环境
ecological environment
信的日期写在哪个位置？
右上角/左上角
I want to write a letter to volunteers _____ patrol and protect rivers.
who
n. 责任
responsibility
solution的动词形式
solve
waste water
废水
”我写信是为了感谢......“
I am writing to thank you for ...
If action is _____(take), the environment will become better.
taken
renewables
n.可再生能源
technology的复数形式
technologies
践行低碳生活
lead a low-carbon life
“再次对......表达感谢”
Thanks again for ...
It is you and me ____ can work together for a greener and more beautiful homeland.
that/who
n. 保护
protection/preservation
cooperate的名词形式
cooperation
renewable resources
可再生能源
感谢信正文部分写作步骤
1. 写信目的（表达感谢）
2. 详述感谢的缘由
3. 再次表达感谢
We must take actions _____ (protect) our environment.
to protect
solution
n.解决方案；解决措施
pollution的动词形式
pollute
碳足迹
carbon footprint
正文之后的内容
Sincerely yours,
(Name)
World Environment Day is a day ____ people work together to show support for environmental protection.
when