It's quite a big area of grammar - too much to explain here. Check in a grammar book or on a grammar site, then ask again (in the Answers section) if you have any specific questions. NB Look for CAUSATIVE (not 'causitive').

'Make',' let' and 'have' are all causative verbs. 'Help' can also be one. They are followed by the object and a bare infinitive, for example:

He made me do it.

He let me go there.

Thanks Su.ki for help

only these two verbs are causitive or there are some els.?