be used to vs. used to do
- I am used to animals.
- I used to smoke.
These two expressions look the same, but in fact they are completely different.
be used to
be used to something
be used to doing something
be used to is an expression. It is not a tense. If I say "I am used to loud noise", it is like saying "I am accustomed to loud noise. It doesn't bother me."
Structure of be used to
The structure of be used to is:
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used to do
We say used to do when talking about the past. It is not a tense but it is like a tense. It is a special structure. We use the structure used to do for the past only.
If I say "I used to smoke" it is like saying "I smoked in the past but I don't smoke now."
Structure of used to do
The structure of used to do is:
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