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結(jié)構(gòu) : be (is/am/are) + doing 例句 : I am having an English class. We are listening to Ms Zhou. ? I was in the bathroom. ? I was in my bedroom. ? I was in front of the library. ? I was in the kitchen. ? I was in my barber shop. ? I was in the barber’s chair. d b a c e f 1a What were you doing when the UFO arrived? ? a. standing in front of the library/ studying in the library ? b. cleaning my room/ sleeping late ? c. making a smoothie/ cooking dinner ? d. getting out of the shower/ ? talking on the phone ? e. eating lunch/ cutting hair 1b listening barber boy man woman girl A: What was … doing when the UFO arrived? B: … was ..ing when it arrived. young man Listen and order these statements [15]. 2a The alien visited the Museum of Flight. The alien bought a souvenir. A UFO landed on Center Street. The alien went into a store. An alien got out of the UFO. 54132 Listen again. Complete the following sentences with “when” or “while”. 2b 1. The boy wa