My rule is that if you can substitute in the process of and have the same meaning, you're probably correct.
* Diana is expecting to see him today.
* Ian is buying his Christmas gifts this week.
* Twila is walking three miles every day, while Shawn is running five miles a day.
* Nelda is getting married in three months. Wrong: There is no continuing action and she's not in the process of getting married. Correct: Nelda will marry (or get married) in three months.
When I use the progressive tense,
I refer to ongoing action.
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Cecil Murphey's Writer to Writer Conference will be held January 16-18, 2015, at the Hershey Lodge in Hershey, PA, prior to the Munce Group Christian Product Expo (CPE). Faculty includes Cec, Jerry Jenkins, and Shawn and Suzanne Kuhn (SuzyQ). For more information, visit www.writertowriter.com.