人教A_选修6_Unit5_The_power_of_the_nature_课件.pptVIP

Unit 5 The power of nature Learning about language 归纳总结： ◆动词-ing是 ________________ 中的一种， 单独使用时, 能在句中做除_________ 之外的任何其他句子成分。如: 主语、 宾语、表语、定语、状语、宾补等。 ◆在语态上，动词-ing表示 ________ (主动/被动的动作)。 在时间上, 动词-ing一般表示 _________ (正在进行/已经完成)的动作。 观察下列2个句子, 体会having done与 doing的不同用法: 1) Having written the letter, John went to the post office. 2) Seeing the beautiful sight, the children felt excited. 总结: Exercise 1: 1) ____ the child to bed, she began to correct the students’ homework. A. Sending B. Being sent C. Sent D. Having sent 2) Be careful when / while ________ (cross)the street. 3) ________________ (听到这个消息), we got excited. Exercise 2: 1) 她被蛇咬了三次后, 她看见蛇后就害怕。 __________________________________ __________________________________ ___________________________________ 2) 正在进行的那个会议非常重要。 __________________________________ __________________________________ 1) ______________ him the answer several timeS, I did’t know whether he could understand. 2) _________________ the answer several times, he still couldn’t solve the question. 2. The storm left, _____ a lot of damage to this area. (2005全国) A. caused B. to have caused C. to cause D. having caused 3. _____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. (2004北京) A. To wait B. Have waited C. Having waited D. To have waited 4. ___ such heavy pollution already, it may now be too late to clean up the river. A. Having suffered B. Suffered C. To suffer D. Suffered 5. The secretary worked all night long, _____ a long speech for the president. A. to prepare B. preparing C. prepared D. was preparing Ⅱ. 将每组中的两个句子组合成一个拥有 动词-ing形式的句子。 1. Alice saw a volcano erupting in the morning. She felt excite