when+and+while

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Interrupted Action in the Past Use the Past Continuous to indicate that a longer action in the past was interrupted. The interruption is usually a shorter action in the Simple Past.
 * I ** was sleeping ** TV (first action -past continuous ) when the blizzard hit . (second action -simple past ).
 * When the phone blizzard hit, (second action -simple past ), I was sleeping **.**(first action -past continuous ).
 * While+past continuous
 * When+past tense

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media type="custom" key="11464158" 1 .http://www.englishexercises.org/makeagame/viewgame.asp?id=130#a 2 .http://www.englishexercises.org/makeagame/viewgame.asp?id=7192 3 . http://www.englishexercises.org/makeagame/viewgame.asp?id=5099 4. http://www.englishexercises.org/makeagame/viewgame.asp?id=4753

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