A. Ladies and gentlemen, May I have your attention, please. I have an announcement to make.

　　B. Attention, please. I have something important to tell you.

　　C. Mr. Green, Welcome to our school. To begin with, let me introduce Mr. Wang to you.

　　4. 演讲稿：

　　A. Ladies and gentlemen, I feel very much honored to have a chance here to make a speech on the subject -- A Balance Diet and Health.

　　B. Good morning everyone! Allow me, first of all, on behalf of all present here, to extend our warm welcome and cordial greeting to our distinguished guest.

　　二．并列用语：

　　as well as, not only…but (also), including,

　　A. Not only do computers play an important part in science and technology, but also play an informative role in our daily life.

　　B. All of us, including the teachers / the teachers included, will attend the lecture.

　　C. He speaks French as well as English.=He speaks English, and French

　　as well.=He speaks not only English but also French.

　　D. E-mail, as well as telephones, is playing an important part in daily communication.

　　三．对比用语：

　　on one hand ,on the other hand,

　　on the contrary/contrary to ..., though, for one thing ;for another, nevertheless

　　A. I know the Internet can only be used at home or in the office, but on the other hand, it is becoming more and more popular for much information as well as clear and vivid pictures.

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