本影片所學為時間子句-WhenⅡ，以老師詢問地震發生當時學生正在做什麼事情為情境帶入課程，說明when句型架構為Event 1 (past progressive tense) when Event 2 (past tense).，例如I was watching TV when the earthquake happened.。句子中持續一段時間的動作，動詞使用過去進行式，如前句中的watching TV；而突然發生的動作則使用過去簡單式，如前句的happened。此外，影片中也介紹以when開頭句子架構：When Event 2 (past tense), Event 1 (past progressive tense) ，如When the earthquake happened, I was watching TV. 對話中與when有關的例句包含：I was doing homework when the earthquake hit Taiwan.／I was taking a shower when the earthquake hit Taiwan.／Maybe when the earthquake happened I was sleeping then.。