[Mr. Mohamed Atalla]

هل الجملة الآتية صحيحة
He didn't used to come on time

Used to is used to describe past habits or long-lasting actions and situations which are now finished

* People used to think the sun revolved around the earth.

* I used to take size 12, but now I take size 14

For questions and negative forms, two forms of the verb are used - either the normal infinitive pattern after did (more common), or the past form used (less common):

* When you were a kid, did you use to think the sun revolved around the earth?

* When you were a kid, did you used to think the sun revolved around the earth?

* I didn't use to take such a large dress size, but now I do.

* I didn't used to take such a large dress size, but now I do.

In a more formal style, questions and negatives are possible without do, following the pattern of a modal auxiliary verb, although these forms are less often used:

* I used not to like contemporary dance, but now I do.

* Used you to play the organ in church before you became a monk?


http://www.bbc.co.uk/worldservice/le...rnitv285.shtml

Best Regards
Muhammad Atalla