The document discusses using the past tense form "were" and other past tense verbs to talk about places people have been in the past. It provides examples of asking questions like "Where was Harry yesterday?" and answering with sentences like "He was at the ice-skating rink." It also provides practice with questions about where people and characters were last summer or yesterday, with answers using past tense forms of "be" and other location words. The purpose seems to be practicing English grammar rules around using past tense verbs to discuss past locations and activities.