英文說話問題?

no. you can say" if noboby has anything to add, let' stop here."
You must have a conclusion(總結)that is a better way to stop
and try your best to say more
GOOOOOOD LUCK．

2007-04-23 21:51:40 補充：
以上是group discussion如果你是個人短講，你可以講"This is my presentation,thank you for your attention."

Not very polite. You should say, 'I have already finished.'

I have finish .

2007-04-18 22:35:49 補充：
I have finished . Thank you for your attention !