英语演讲开场白和结束语：正式场合与非正式场合英语演讲开场白和结束语：正式场合与非正式场合-I will be pleased to answer any questions you may have at the end of the presentation.-Please can you save your questions till the end.-If you have any questions, I will be pleased to answer them at the end of the presentation.-there will be time at the end of the presentation to answer your questions-so please feel free to ask me anything then.-Dont hesitate to interrupt if you have a question.-Please feel free to
