在一個網路廣播看到句子如下
IF someone's calling me when my phone's on silent, I can feel that vibration
on my leg.
想問板友的問題是
someone's calling me = someone is calling me
my phone's on silent = my phone is on silent
如果是的話 是不是在口語在講的時候 習慣把Be 動詞 is 縮成's

是的，就像 I am a student. I'm a student.