- The subject of my presentation is...

　　- I shall be speaking today about...

　　- My presentation concerns...

　　- Today's topic is...

　　- Today we are here to give a presentation on...

　　- Today we are here to talk about...Before we start, I'd like you meet my team members...

　　- I shall be offering a brief analysis of...

　　-The main area that I intend to cover in this presentation is...

　　- Take a moment and think of...

　　- Thank you for giving me the opportunity to tell you about...

　　- I'm going to be speaking about something that is vitally important to all of us.

　　- I am going to be talking about a topic that could …..

　　- By the end of this presentation you will know all there is to know about...

　　结束语

　　-In conclusion, I'd like to...

　　-I'd like to finish by...

　　-Finally...

　　-By way of conclusion...