Causatives: Have and Get

We use causative structures when we want to say that someone arranges, asks, pays, or persuades another person to do something.

The important idea is this: the subject causes the action to happen, but the subject does not usually do the action personally.

Causatives are very common when we talk about services, repairs, appointments, professional help, and situations where we organise an action but do not do it ourselves.

In this lesson, we will study four important causative structures:

• have something done
• get something done
• have someone do something
• get someone to do something

Active Sentence vs Causative Sentence

To understand causatives, it is useful to compare them with normal active sentences.

In a normal active sentence, the subject does the action.

But sometimes someone else does the action for us. Maybe we pay them, ask them, hire them, or persuade them.

A causative sentence gives a different focus. It focuses more on the result or the service, not on the person who did the action.

This is why causative structures are sometimes similar to the passive voice: the person who does the action is not always mentioned.

Have Something Done

We use have something done when someone else does a service or task for us.

This structure is very common when we talk about things like haircuts, car repairs, house painting, medical checks, photos, documents, and professional services.

In these sentences, the subject does not do the action personally.

• I did not wash the car myself.
• John will not paint the house himself.
• She did not test her own eyes.

The action is done by another person, usually a professional or someone providing a service.

Have Something Done in Different Tenses

In the structure have something done, the verb have changes depending on the tense.

The past participle stays the same.

Remember: the main causative form is always have + object + past participle, but have must match the tense of the sentence.

Get Something Done

We can also use get something done with a very similar meaning to have something done.

The difference is mostly about style. Get something done is usually more informal and more common in everyday spoken English.

These sentences mean that another person does the action for the subject.

• The students do not check their own essays.
• I will not cut my own hair.
• He did not fix the washing machine himself.

In many everyday situations, native speakers use get naturally when talking about arranging a service.

Have Something Done vs Get Something Done

Have something done and get something done often have the same basic meaning: someone else does something for us.

Both examples mean that I arranged for someone else to repair my car.

In exams, both forms can be correct, but you should pay attention to the register of the sentence. In formal writing, have may sound more appropriate. In conversation, get is very common.

The Object Receives the Action

In have/get something done, the object receives the action. This is why the structure feels similar to the passive voice.

• I arranged the action.
• my phone received the action.
• repaired is the past participle.

This is different from a normal active sentence.

The active sentence means I did the repair myself. The causative sentence means another person repaired the phone for me.

Have Someone Do Something

We can also use a causative structure when we want to mention the person who does the action.

In this case, we use have + person + infinitive.

This structure is different from have something done because now we say who performs the action.

Notice that after the person, we use the infinitive without to: look, call, write, check.

Get Someone to Do Something

Another causative structure is get someone to do something.

It means that the subject causes another person to do an action. This may happen because the subject asks, persuades, encourages, pays, or convinces the other person.

This structure can sometimes suggest that the subject needed to make an effort to persuade or convince the other person.

The key detail is that get someone to do something uses to + infinitive.

Have Someone Do vs Get Someone to Do

Both structures can mean that you cause another person to do something. However, they are not formed in the same way.

The meaning is similar, but get can sound a little more informal or suggest that some persuasion was involved.

The most common mistake is using the wrong infinitive form:

The Four Main Causative Patterns

There are four important causative patterns with have and get. They are similar in meaning, but the grammar changes depending on whether we mention the person who does the action.

The most important difference is this:

• Use object + past participle when you do not mention the person doing the action.
• Use person + infinitive or person + to + infinitive when you mention the person doing the action.

Common Mistakes with Causatives

Causatives are not difficult once you understand the patterns, but students often mix the forms.

1. Do not use the base verb after the object

After the object in have/get something done, use the past participle.

2. Do not use “to” after have + person

3. Do use “to” after get + person

4. Do not confuse active and causative meaning

Final Summary: Causatives with Have and Get

Use causatives when the subject causes an action to happen, but does not usually do the action personally.

No, we do not mention the person

Use:

• have + object + past participle
• get + object + past participle

Yes, we mention the person

Use:

• have + person + infinitive without to
• get + person + to + infinitive

Remember the central meaning: you arrange, ask, pay, or persuade someone else to do something.