I'm teaching an intermediate ESL class that focuses on writing. There is a lot of grammar, but it is rudimentary and I am trying not to confuse the students with too many complicated terms. In class today we did a lesson on gerunds and infinitives and one of the sentences that was used in the textbook was:
Which meals are you used to eating in a fast-food restaurant?
Of course the combination of "to" + "eating" confused everyone. I did a quick aside to clarify the situation, but promised to revisit the sentence next class. Now I'm stuck because I realize that I don't entirely understand the grammar myself.
Is "be used to" simply a phrasal verb that takes an object, which in this case is a gerund (eating)? Alternatively, is "used to" a complement that requires an object? How would you explain the situation using minimal jargon?
Any clarification would be appreciated. Thanks in advance.