数据结果分析：
Recently, I took part in the research whose topic is...
As the chart shows,...
According to the chart/ survey...
From the data above,...we can draw the conclusion that...
It can be easily seen from the above chart that...
31 percent of water is wasted in the shower, while there is 18 percent for laundry and 18 percent for flushing.
Do you know that taking a shower takes up 31 percent of our daily use of water?
The results show that 31 percent of the water is wasted for shower while 18 percent for laundry.
演讲稿格式
Today, I'm glad to be here to share my ideas about...
It's a great honor for me to stand here and deliver a speech on the topic of...
So，let's try our best to... Thank you！
That's all（for my speech). Thank you for your listening.
表达观点
I'm in favor of/for the idea of using digital devices in class.
I'm against the idea of using digital devices in class.
In my opinion, we should /shouldn't use ...
加分项
用连接词：Firstly/First of all....
In addition/Besides....
In conclusion,...
用不同段落来分割观点
用课本中句子1-2句（基础薄弱生）
好的表达
not only help us analyze problems but also achieve high efficiency in study
bring a lot of benefits to teachers by relieving them of various daily boring tasks such as correcting/checking the homework
take over some boring or time-wasting jobs,like correcting the homework.
we can use the digital device to learn new things all by ourselves,for example, we can have amazing online lessons taught at top schools in ohter cities.
we can also use it to review our homework.
make the lessons more vivid and interesting by adding some games
too much screen time could ruin our eyesight
distract us from the class/ ask AI to give the answers to their homework as soon as they meet a problem and miss the chance to practise their own thinking skills.