山西省太谷县明星中学八年级英语下册教学课件：Section A2 A3.ppt

“当…的时候”,如后面连接的动词为进行时态,则用while,而when通常与瞬间性动词或延续性不强的动词连用。 While I was sleeping, my father got home . I was sleeping when my father got home . (2) 如果while前后的动词都是进行时态,while可译为“与此同时” I was reading while my mother was cooking dinner. Choose “when” or “while” to fill in the blanks. 1．_____ Tom was eating supper, it began to rain outside. 2．Don’t use your cell phone_____ you are driving a car. 3．What were you doing _____Mr. Zhou come in? 4．Jim is good at math_____ Mary is good at English. 5．We were watching TV_____ the electricity was off. 1. He _____________(draw) at eight yesterday evening. 2. The girl ___________(shop) when her friend _____ (see) her. 3. While he ____________ (cook) dinner, his friend __________ (get) out of the shower. 4. He saw the UFO while he ____________ (walk) down the street. 2 3 4 5 3a Read the e-mail message and number the pictures in the correct order. Dear Jack, I had a very unusual experience on Sunday. At around ten o’clock in the morning, I was walking down the street when a UFO landed right in front of me. You can imagine how strange it was! An alien got out and walked down Center Street. I followed it to see where it was going, and I was very surprised when it went into a souvenir shop. While it was looking at the souvenirs, the shop assistant called the police. Before the police arrived, the alien left the shop and then visited the Museum of Flight. While the alien was in the museum, I called the TV station. Isn’t that amazing! Ted Answers 1.What happened when Ted was walking down the street? 2. What did Ted think of the UFO? 3. Where did the alien go first? 4. What did the shop assistant do? Where did the alien go then? 6.When did Ted call the TV station? A UFO landed right in front of him when he was…. He went into a souvenir shop. She called the police. Then he went to the Museum of Flight. He thought (that) the UFO was strange. While the alien was in the museum,Ted called the TV station. Dear Jack