3.4 Grammar-2019-2020学年下学期高二英语同步精品课堂（人教版Book7）(共48张PPT)

Unit 3 Grammar Revise the Passive Voice of —ing Form Having been attacked by terrorists, the World Trade Center collapsed. Unexpectedly, being unemployed gave me back a sense of purpose — I was someone’s mum! 2. What we are sure about is the need to prevent children from being spoiled. 3. The silence of the library was broken only by the sound of pages being turned over. 4. Being watched by his English teacher, little Tom felt nervous, not knowing what to say. 5. Did you see the boy being questioned by the police? 6. Having been told many times, he finally understood it. 一、行为主体不明确，不必说出或者无法说出动作的执行者时。例如： Football is played all over the world． 二、不易找到或根本就不可能找到动作的执行者时。例如： My bike was stolen． 我的自行车被盗了。 何时使用被动语态呢？ 三、汉语中含有“据说”、“据悉”、“有人说”、“大家说”等时。例如： It is said that one day he climbed to the top of a house. It was reported that her mother died of SARS. 众所周知…… It is well known that... 据推测说…… It is supposed that… 四、