您好，下面三句都可以表示您这个句子：
can i help you
may i help you
what can i do for you
英式音标：
[kæn] [aɪ] [help] [juː]
[meɪ] [aɪ] [help] [juː]
[wɒt] [kæn] [aɪ] [duː] [fɔː; fə] [juː]
美式音标：
www.yinbiao5.com[kæn] [aɪ] [hɛlp] [ju]
[me] [aɪ] [hɛlp] [ju]
[wɑt] [kæn] [aɪ] [du] [fə] [ju]