From Common Errors In English:
Than or Then?
When comparing one thing with another you may find that one is more appealing "than" another. "Than" is the word you want when doing comparisons. But if you are talking about time, choose "then": "First you separate the eggs; then you beat the whites." Alexis is smarter than I, not "then I."
Thanks to This Bear Bites for the lesson request!! Anyone else have any English language issues causing you distress? Let me know!