1. Use get according to tense, 2. Place object after the causative verb, 3. Main verb always in 3rd form: Causative Verb(CV) + Object + V 3rd (main verb).
Examples
- I have got the sums solved.
- She will get the letter written by Ravi.
- Are you getting your house pained?
MAKE
1. Use make according to tense, 2. Object is the person who is compelled, 3. Main verb always in first form: CV + Object + V 1st form (main verb)
Examples
- He made me laugh.
- She made the children clean the room.
- Who is making her cry?
- Please don't make him tell a lie.
HELP
1. Use help according to tense, 2. Object is the person who is helped, 3. Main verb always in first form: CV + Object + V 1st form (main verb). (In these sentences a person is helped to do a certain things).
Examples
- Help the guests wash their hands.
- She helped the children do the work.
HAVE
(Same as GET in use and meaning)
Examples
- I have had the sums solved.
- He will have the letter written by Meena.
- They had the tiger killed by the hunter.
KEEP
CV + Object (person) + V 1st form + ing. There is generally a period of time in these sentences.
Examples
- They kept her washing the clothes for 2 hours.
- Did you keep him waiting for one hour?
CAUSE
CV + Object (person) + V 1st form. Instead of a person there are circumstances, things etc. which compel a person to do a certain thing.
Examples
- Fatigue caused him to sleep.
- Does poverty cause people to commit crime ?