English presentation(树形高分子化学学术报告)10分钟

这是同样题目PPT文档的讲稿,非常详细,包括动作和手势都有讲解。

Speech draft

1.(点击）（鞠躬）Good afternoon，（手展开）respected teacher and beloved classmates. I appreciate the opportunity to be here today to share my presentation with you.Firstly let’s take a look at the big screen .Today's topic we will talk about is The Magical Material —Dendrimer. Maybe you are strange to dendrimer, so what’is the dendrimer? I think you must be familiar with polymer. Because it is closely related to our life, such as space cup, plastic shopping bag and auto tyre. They are all made of polymer, and the dendrimer here is a special polymer which like tree branches. So next , let’s go into the world of magic dendrimer.

2.Here comes the outline, and I would like to give this presentation in four parts. They are introduction，research background，structure and property and application. The last two part are key points in my presentation.

3.(点击）Then let’s see the introduction. we can see three pictures in the screen, and they vividly illustrate the stucture of dentrimer —a special polymer like tree branches.In the bottom,it’s the definition of dentrimer—“Starting from multifunctional kernel, a highly branched structure of dendritic three -dimensional large molecules are formed by the repeated growth of branched primitive”. I marked the key words in red. They are multifunctional kernal, repeated growth and branched primitive. Then let me explain its meaning. The kernal is multifunctional, just like it has many hands，so it can grows bigger by repeatedly joining hands with little buddies—branched primitive.In the end, it grows into the dentrimer. It’s very interesting.