To rewrite the sentences in the causative form, follow this structure:
Causative Structure:
- Present Simple: have/has + object + past participle (V3)
- Past Simple: had + object + past participle (V3)
- Future Simple: will have + object + past participle (V3)
Here is a step-by-step solution for each sentence:
A nurse took off Sean's cast this morning.
- Sean had his cast taken off this morning.
The doctor is examining Sarah's hand.
- Sarah is having her hand examined.
Greg's mum will shorten his trousers.
- Greg will have his trousers shortened.
A hairstylist is going to do Sylvia's hair for the wedding.
- Sylvia is going to have her hair done for the wedding.
Jim's mum put a bandage on my ankle.
- I had a bandage put on my ankle by Jim's mum.
Liz has just been to the optician’s for an eye test.
- Liz has just had an eye test done.
We had someone to mow our lawn once a week.
- We had the lawn mowed once a week.
Someone had repaired the roof before they moved in.
- They had the roof repaired before they moved in.
This transformation places the focus on the action being done for or to someone, often by another person, using the causative form.