Unit 5 What were you doing when the rainstorm came?n.暴风雨同义词while过去进行时A:What were you doing when the rainstorm came?B:I was ....=What were you doing at the time of the rainstorm?take a showerdo my homeworkread in the librarymake dinnertaking a showerdoing my homeworkreading in the librarymaking dinnerPairwork!...when the rainstorm came.+过去的时间点+过去的事情He was taking photos. She was shopping. He was taking photos while she was shopping.=While she was shopping, he was taking photos .=She was shopping while he was taking photos.=While he was taking photos, she was shopping .while强调两个动作同时发生，而且是延续性动作。whenWhenwhenWhenwhen可以跟while互换。Li LeiLi Lei was playing the piano. MikeMike turned on the TV. While Li Lei was playing the piano, Mike turned on the TV. Mike turned on the TV while Li Lei was playing the piano . 瞬间动词Li Lei was playing the piano when Mike turned on the TV. When Mike turned on the TV, Li Lei was playing the piano . 注意:when既可接延续性动词，也可接短暂性动词，while只接延续性动词。将下列句子合并成一句。 Exercises!1.Ben was helping his mom make dinner. It began to rain.→2.I was sleeping. Mary was doing homework.→3.My sis |
