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be used to vs used to do

To be used to something, can be used as an adjective and we use it to talk about things that have become familiar, and are no longer strange or new.

For example: "I am used to mistakes now."

You can also be used to doing something.

For example: "I am used to making mistakes now."

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Used to do - If we say something used to happen we are talking about repeated events and actions in the past, usually things that happened a long time ago and are now finished.

For example: "I used to smoke."

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