| Form | Example | |
|---|---|---|
| used to | + bare infinitive | I used to drive to work. |
| be used to | + noun or -ing (permanent) | I'm used to driving to work. |
| get used to | + noun or -ing (changing, informal) | I used to smoke. (past habit, no longer) |
| become used to | + noun or -ing (formal) | I'm used to the noise. |
| Any tense | be/get/become change tense freely | I'm getting used to it. |