CAUSATIVE

1. HAVE/GET SOMETHING DONE
We use a causative verb when we want to talk about something that someone else did for us or for another person.
We usually use 'have something done' when we are talking about paying someone to do something for us. It's often
used for services. The form is 'subject + have + object + past participle'.
 I had my car washed.
 John will have his house painted.
We can also use 'subject + get + object + past participle'. This has the same meaning as 'have', but is less
formal.
 The students get their essays checked.
 I'll get my hair cut next week.
 He got his washing machine fixed.
TENSE CHANGES:
Present simple: Somebody cleans her house > She has her house cleaned.
Present continuous: Somebody is cleaning her house > She is having her house cleaned
Past simple: Somebody cleaned her house > She had her house cleaned
Past cont: Somebody was cleaning her house > She was having her house cleaned
Future simple: Somebody will clean her house > She will have her house cleaned
Future cont: Somebody will be cleaning her house > She will be having her house cleaned
Future perfect:Somebody will have cleaned her house > She will have had her house cleaned
Present perfect: Somebody has cleaned her house > She has had her house cleaned
Present perfect cont: Somebody has been cleaning her house > She has been having her house cleaned
Past perfect: Somebody had cleaned her house > She had had her house cleaned
Past perfect cont.: Somebody had been cleaning her house > She had been having her house cleaned.