精品课件_人教新目标版英语八下《UNIT 3 WHAT WERE YOU DOING WHEN THE UFO ARRIVED》PPT期末复习课件.pptVIP

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Summary: 过去进行时的构成： 1.概念:表示过去某个时刻或过去一段时间正在进行的动作. 2.公式:主语+was/were+doing sth +时间状语 3.指示词: at that time, at nine, when someone did sth.等连用 , * ??2. 现在分词的构成 ????4）以字母y结尾的单词，直接加ing。 ????如carrying、playing、studying。 ????5）以字母ie结尾的动词，变ie为y，再加ing。 ????die→dying???????????? lie→lying ????6）以元音字母加e结尾，或以e结尾，且e发音的动词，直接加- ing 。 ????see - seeing????????????be - being * 1. I ___________ (cook) dinner when my daughter came back home yesterday. 2. Look! A cat ___________ (climb) up the tree. 3. John ______ (walk) to school every day. was cooking is climbing walks 二、用所给动词的适当形式填空。 * 4. John was climbing the tree when a man _____ (see) him. 5. I ___________________ (be) a teacher in five years. 6. John can ________ (draw) a horse very well. saw will be draw /am going to be * 课堂练习 二. 用when，while填空 1. __________ the alien was in the museum , I called the police . 2. The boy was walking down the street __________ a UFO landed . 3. __________ the alien was visiting the museum , the boy called the TV station . 4. I was cleaning my room ________ the fire broke out . 5. __________ Linda was shouting his name , some people looked at her . 6. __________ Linda finally saw Davy , he was jumping with a dog . While when While when While When * “when” or “while” when可指时间点，又可指时间段，从句中可用延续性动词，也可用非延续性动词，常跟一般过去时 When the UFO took off, the boy was taking photos while 总是指一个时间段，从句中必须用延续性动词。常跟过去进行时 While the boy was taking photos, the UFO took off, * 延续性动词表示的动作不但可以延续，而且可以产生持久的影响。 非延续性动词指表示行为瞬时间完成的动词,以及表示“变得”意义的联系动词 have live read sing sleep stand stay wait walk watch put begin open borrow return leave become arrive buy stop * 1.—What_____ you______（do）when the UFO ________ (arrive)? —I_____________（make）a cake in the kitchen. 2.When the door bell rang，Jim___________（sleep）in the bedroom. 3.The girl____________（shop）when she _________ (see) the alien get out of the UFO. 4. The boys