saya akan presentasi bahsa inggris... bagaimana cara membuka presentsi dengan bahasa inggris,mengenalkan rekan kelompoknya dan menutupnya,,

contoh... Ass... wr.wb.
good morning/afternoon all.. we are going to presentetion our material but before that let me introduction our group.. this is AAAAA (menunjuk teman) as a writter and me as a moderator. and the last Mr. ZZZZ as our group's leader.

penutup.. Ok well guys.. I think time is up, thanks 4 your nice attention and Good mornig/afternoon. and the last I say ass.,.,.wr..wb., 

Ass.. Hello,morning guys! How are you? Ok! Before opening our presentation. Let us indroduce our self to you.. my name is...(lalu tunjuk rekan & sebutkan namanya stu persatu) penutup=> ladies and gentleman, thats all about our presentation.. thank you so much for your nice attention.. and the last we say Wassalam