Unit 4 Using language 课件-2021-2022学年高中英语外研版（2019）必修第二册

B2U4 Using language -ing as adverbial 1 Learning objectives 2 -ing as adverbial 现在分词作状语 定义： 动词-ing形式作状语时,在句中表示时间、原因、条件、让步、结果、方式或伴随动作,相当于对应的状语从句或并列句。 现在分词的逻辑主语必须是句子的主语，必须和句中的主语含有逻辑上的主谓关系， 否则不能用现在分词作状语。 3 一、现在分词作状语的形式 主动语态 被动语态 一般式 doing being done 完成式 having doing having been done 4 温馨提示 当现在分词的动词与谓语动词的动作同时发生时,用分词的一般式。 Seeing the beautiful sight, the children felt happy. (seeing与felt同时发生) 看到美丽的景色,孩子们很高兴。 当现在分词的动作发生在谓语动词的动作之前时,用分词的完成式。 Having written the letter,John went to the post office. (having written发生在went之前) 写完信后,约翰去了邮局。 5 Examples Seeing the beautiful sight, the children felt happy. I am very pleased at your being chosen a member of the school volleyball team. 我很高兴你能被选为学校排球队的队员。 Having written the letter,John went to the post office. I forgot once having been taken to the city zoo. 我忘了曾经被带到过城市动物园。 6 二、现在分词作状语的基本功能 作时间状语。 通常放在句首,相当于when/ while/ after等引导的时间状语从句。 Putting on his clothes (=After he put on his clothes), Bill went out