Song "Martha, my dear" (by Beatles) contains these lines:
When you find yourself in the thick of it.
Help yourself to a bit of what is all around you.
I don't understand why part to a bit of what is all around you is grammatically right.
I suppose that this part should look something like: Help yourself to take a bit of what is all around you.
I would like to know what this part exactly means and why it is grammatically right.
The to in this phrase is a preposition. To help yourself to something means to serve yourself something. For example: Help yourself to a piece of pie. Help yourself to some ice cream.
There is not usual word-order here as far as it is poetical text, however, grammatically it looks correct.
Help yourself to + noun-phrase.
Looking from syntactical point of few, here it is a noun phrase (preposition phrase) where a bit is instead of the head noun, and the subordinate clause is what is all around you (the dependent is complement-type).
