Now you know your ABC ,everybody sing with

Now you know your ABC ,everybody sing with Now you know your a b c every body sing with Do you know where is your heart now? now sing this with me什么意思 "Uncle John,you know everybody here.----------------- what are you talking with your mom just now? 歌词everybody know everybody know You can sing Karaokay there with your friends.指那个单词?su开头的 i()(know )you can sing very well. do you know who this___(sing)is i know you mundered my parents,now you will dance with the d Now you may sing to your heart’s content． 帮忙分析下句子主谓宾谢谢!to的作用