| announcing the topic
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| I plan to speak about ... |
| Today I'm going to talk about ... |
| The subject of my presentation is ... |
| The theme of my talk is ... |
| I've been asked to give you an overview of ... |
| The theme of my lecture is ... |
| As you can see on the screen, our topic today is ... |
| Today's topic is ... |
| What I'd like to present to you today is ... |
main part