BOOK ONE · LESSON 072

When did you ...?

你什么时候……？

A bilingual lesson built around 15 past-tense verb illustrations (aired, cleaned, opened, sharpened, turned on, listened, boiled, arrived, played, stayed, shaved, climbed, telephoned, called, emptied) in three rows and a time-phrase reference table (TODAY / YESTERDAY / THE DAY BEFORE YESTERDAY), practising 'When did you ...?' with regular verbs in the simple past. Includes textbook written exercises on completing sentences and writing questions and answers, workbook dialogues with regular past verbs and situations, and grammar on answering 'When did ...?' questions and completing dialogues. 以15幅过去时动词插图（ aired、cleaned、opened、sharpened、turned on、listened、boiled、arrived、played、stayed、shaved、climbed、telephoned、called、emptied）和三行时间短语对照表（今天/昨天/前天）为主的双语课，练习规则动词一般过去时的「你什么时候……？」句型。配合教材书面练习（完成句子、提问并回答）、教材填空对话与情景练习，以及「何时……？」问句回答和完成对话的语法练习。