Some French resources you may find useful for question forming using "est-ce que". The examples all use modal verbs - so any infinitive can be added to make a complete question. But the same structure would also apply to questions in present and other tenses.
I read an interesting blog post about the fact that language learners are used to answering questions but not so used to asking them. See: http://jasonrenshaw.typepad.com/jason_renshaws_web_log/2011/01/when-answering-is-only-half-the-potential-of-a-question.html