This structureThe way in which the parts of a sentence, clause or expression are arranged. E.g.: make somebody + infinitive in "The teacher made me rewrite the composition." implies that the other person did not really want to do something but they were forced.

The teacher made Jack rewrite the composition.

When we transform this structure into the passive, we insert to between make and the infinitive.

I was made to rewrite the composition.

Note that the previous change does not happen with the structure let somebody + infinitive.

The kidnappers let us go.
We were let go.

Causative with an emphasis on the agent
Causative with an emphasis on the agent GET + somebody + TO + infinitive

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