Listen to the song by Owl City and fill in the gaps. You will find some examples of the infinitive.

1. You would not believe your eyes
   If ten million fireflies
   lit up the world as I fell asleep
   'Cause they'd fill the open air
   And leave teardrops everywhere
   You'd [ ]but I would just stand and stare

2. I'd like to make myself believe
   That planet Earth turns slowly
   It's hard to say that I'd [ ]awake when I'm asleep
   'Cause everything is never as it seems

3. 'Cause I'd get a thousand hugs
   from ten thousand lightning bugs
   As they tried [ ]how to dance
   A foxtrot above my head
   A sockhop beneath my bed
   A disco ball is just hanging by a thread