Hi there!
I was doing some reported speech exercise when came across this sentence.
‘Will you help me carry the box, please?’ Dad asked.
What I’d like you to explain to me why we don’t use ‘to’ after ‘me’
I’ve been drilling exercise like ‘verb + infinitives’, ‘verb + ing’ so many time and now it seems I’ve missed something.
Is there a full list of explanation about ‘verb + to\ing’ on the net.
Thank you in advance 
You haven’t missed much. ‘Help’ is an unusual verb for which ‘to’ is optional. No others spring to mind; ‘help’ must be the only common verb like this.
I think the same applies to other verbs which indicate moving something:
Will you help me lift the box?
Will you help me shift the box?
I think “to” goes with (or rather, is optional with) “help”, so it doesn’t matter what the other verb is …
But anyway, I’ve been trying to think of other verbs that can have the structure of the “help” example. I can’t think of any other examples where “to” is optional, but here are some some where “to” is not used at all:
“I let him carry the box.”
“I made him carry the box.”
“I had him carry the box.”
“I heard him carry the box.”
“I saw him carry the box.”
“I felt the ground shake.”
“I watched him carry the box.”
Any others?