[Grammar] "All you did was to do something" or "all you did was do something"?

[Heidi L]

"All you did was to do something" or "all you did was do something"?

Do we say "all you did was duplicate my effort" or "all you did was TO duplicate my effort"?

Thank you.

 

[Roman55]

Re: "All you did was to do something" or "all you did was do something"?

I am not a teacher.

Omit the 'to'.

 

[Heidi L]

Re: "All you did was to do something" or "all you did was do something"?

BTW, would you feel negative or unfriendly if someone said those words to you? "All you did was duplicate my effort."