12 二、when 連接兩個同時 發生的動作或活動 1. when 引導表示瞬間動作的 過去式子句，襯托 A 事件 發生的時間。「 B 事件」發生 （瞬間動作）時間起點時間終點Now進行中的「 A 事件 」
13 例：(2) When I got home, Mary was taking a bath.當我回家的時候，Mary正在洗澡。
14 例：(1) Jack was swimming when I called him.當我打電話給Jack時，他正在游泳。
15 Practice sleep / I saw the baby. The baby was sleeping when I saw him .h當我看見這個小嬰兒時，他正在睡覺。
16 Practice dance / I walk into the classroom Nancy was dancing when I walked into the classroom. 當我走進教室的時候Nancy正在跳舞。
17 Practice read the newspaper /he opened the door when he opened David was reading the newspaperDavidwhen he openedthe door.
18 Practice cry / Tom got up when he got up. Tom’s sister was crying
19 二、基本用法 4. 句型 What were you they doing then? at 11 p.m. last night? was sheWe / Theywerewatching TV.playing video games.IHe / Shewas
20 例：(1) A: What were you doing at ten this morning?你今天早上十點在做什麼？B: I was fixing my car.我正在修理我的車。(2) A: What was she doing then?她那時在做什麼？B: She was washing her shoes.她正在洗她的鞋子。
21 Practice ˙完成句子 read a comic book / at three thirty this afternoon Janetread a comic book /at three thirty this afternoonwas readingJanet a comic book at three thirty this afternoon.
22 Practice play soccer / at six o’clock yesterday evening six o’clock theyplay soccer /at six o’clock yesterday eveningsix o’clockyesterday eveningwere theyQ: What doing at?A: Theywere playing soccer
23 Practice play the guitar / at two thirty yesterday afternoon Daveplay the guitar /at two thirty yesterday afternoonQ: What was Dave doing at two thirty yesterday afternoon?A:He was playing the guitar