the least you could do is <to?> put a little bit of it ....

[treejw]

"Listen, Rick, if you're gonna stay here rent-free and use my son for
your stupid science, the least you could do is put a little bit of it to use for the family."

It's a line from Rick and Morty 102, and I'm wondering why this man using the word 'put' instead of 'to put' or 'putting'.

Is it a simple grammar mistake or there's some grammar logic I don't know?
Please let me know. Thanks in advance

 

[sdgraham]

The use of the infinitive without "to" is correct here. There's no mistake.

As such, the least you can do is buy me a beer.

(Do you still have OB beer in Korea?)

 

[Glenfarclas]

"Putting" would definitely be a grammar mistake.

But as for "to," it's entirely optional here.

 

[sdgraham]

"Putting" would definitely be a grammar mistake.

But as for "to," it's entirely optional here.

 

[treejw]

Thanks Glenfarclas, and sdgraham.

 

[treejw]

PS we still have OB beer, sdgraham. even though I am not a fan of it lol

I hope it is not too late reply. Ive got some network error ;(