They acted as if they were mourning him rather than helping him (to) start a new life.
The first step to help him was (to) give him a good education.
You can omit to in the first sentence. But you can't in the second sentence.
I know this, but I'm not sure why. I would like to know why.
Note: they're sentences I wrote myself.
Best Answer
Good question! When help has an object immediately followed by a complement clause, the to is optional:
In the second sentence of your question, the to-clause is not a complement of help, so the to is mandatory.
Let and make only take clausal complements without to:
These patterns have to be learned on a verb-specific basis. Allow and force have similar meanings but require to: