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How do you use the pattern "used to" in the interrogative form?

Is it correct to ask: Did you use to play tennis when you were a child?

Thanks.
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Hello icu
How do you use the pattern "used to" in the interrogative form?
Is it correct to ask: Did you use to play tennis when you were a child?

This is fine. Perhaps less often, you would find:

1. Used you to play tennis, as a child?

It does sound a little stiff, though.

The usual negative form would be:

2. Didn't you use to play tennis, as a child?

Or, again more rarely,

3. Usedn't you to play tennis, as a child?

This use of 'used to' is (as you probably already know) different from 'used to = accustomed to'.

MrP
Comments  
Yes it is.
When you parse this sentence, you'll notice that in this case 'to' belongs to 'playing tennis', forming 'to play tennis'.
In the form 'being used to something', 'to' functions as a preposition. After prepositions, you should always use the -ing form of the following verb.

e.g.
Did you use to play tennis when you were a child? - OK
Yes, I used to play tennis when I was a child. - OK
I am used to playing tennis - OK
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To vince,
Can you tell me the difference between the following pairs of sentences:-

a)
i) Did you use to play tennis as a child?
ii) Were you used to playing tennis as a child?

b)
i) Did you use chopsticks as a child?
ii) Were you used to using chopsticks as a child?
 MrPedantic's reply was promoted to an answer.
MrP already explained it:
This use of 'used to' is (as you probably already know) different from 'used to = accustomed to'.


In sentences 2 (of both a and b), 'used to' refers to 'being accustomed to'. You could also write it like this:
a) Were you accustomed to playing tennis as a child?
b) Were you accustomed to using chopsticks as a child?
'used to' has the following meaning in these cases:
used to show that a particular thing always happened or was true in the past, especially if it no longer happens or is no longer true

You can't do this in the other sentences:
a) Did you accustom to play tennis as a child?
b) Did you accustom chopsticks as a child?
'use' has the following meaning in these cases:
to put something such as a tool, skill or building to a particular purpose

Sentence b2 makes it very clear:
Were you accustomed to using chopsticks as a child?
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