Notice that the original words to the song say:
What shall we dowith a drunken sailor.
This video version, however, says:
What will we do with a drunken sailor.
What are we going to do with a drunken sailor.
are going to do
My verb form is much longer,
so we have to reduce some sounds to fit the music.
First, let’s divide the sentence into word groups.
(What are we) (going to do) (with a) (drunken sailor)?
(What are we)
(going to do)
Now, let me show you how I practice a long sentence.
I start from the end of the sentence.
with a drunken sailor
going to do with a drunken sailor?
What are we going to do with a drunken sailor?
Reduction is a basic part of American English pronunciation.
What is Reduction? Find out here. [link]