In a causative, a person or thing does not perform an action directly. The subject (person or thing) causes it to happen by forcing, persuading, assisting, etc. an agent (another person or thing) to perform it. | Important English causative verbs – have, get, make, let, help | Causative ‘have’ has less force and authority than causative ‘get’. Causative ‘get’ has less force and authority than causative ‘make’ | Causative ‘Have’ is more formal than causative ‘Get’. In the imperative form, causative ‘Get’ is more frequent than causative ‘Have’. | Patterns and examples of causative sentences | Causative structures are of two types – ‘active’ in nature – (done by somebody/something) and ‘passive’ in nature – (done to somebody/something) | Sample this: I had him take my photograph. Residents have to have electric meters repaired. We make people like what they hate. Get yourself vaccinated. He was letting the engine warm. Guide helped tourist come out of the dense forest.