IT职业英语 高巍巍 YF-Grammar 语法 unit2 Passive voice被动语态新.ppt

Grammar 语法 Unit 2 Passive voice被动语态 一、为什么用被动语态 当人们只关心宾语或者什么事情被做的时候，用被动语态因为“是谁做的”已经不重要了。 二、被动语态的主要结构 被动语态的动词结构是：be + p.p. (p.p. 是动词的过去分词形式)，而且be动词在具体情况下，应该用恰当的时态。 三、各种时态被动语态的谓语动词形式 Exercise Fill in the gaps with the proper passive tense form of the words given in the brackets. 1. It is reported that a new robot __________ (design) by him in a few days. 2. Diamond __________ (discover) in Brazil in 1971. 3. Tim has been out of work since he __________ (dismiss) three years ago. 4. A large number of colleges and universities __________ (establish) since 1949. Exercise 5. The goods __________ (unload) when they arrived at the airport. 6. Most environment problems still exist because no effective measures __________ (take) in the past. 7. Pluto, the outermost planet of the solar system, __________ (discover) photographically in March 1930. 8. The construction of the laboratory __________ (complete) by the end of next year. Thank you! * * *