Unit 3 现在完成时被动语态课件 【新教材】2020-2021学年高中英语人教版(2019) 必修第二册

Unit 3 现在完成时被动语态 现在完成时与现在完成时被动语态的动词形式 找出下面句子的谓语结构，哪些是主动？哪些是被动？ Jan’s life has been greatly improved by the Internet. The Internet has greatly improved Jan’s life. People have written much about the wonders of the World Wide Web. Much has been written about the wonders of the World Wide Web. 被动 主动 主动 被动 现在完成时谓语结构 主动 被动 have/has done have/has been done ......已经被...... （一）表某被动动作对现在造成的影响或结果，常与already, yet等连用。 The dirty clothes have already been cleaned. 即学即练： The bike____________________(not repair) yet. I _____ already________________(introduce) to Mr. Smith. has not been repaired have been introduced 现在完成时被动语态用法 1. The problem has been discussed for 2 days. 2. Many new buildings have been built in the past few years. 3. Two novels have been written by him so far.  4. The computer has been used every day since I bought it. （二）找出表示时间状语的词语并总结用法。 表示一个被动的动作或状态从过去开始一直持续到现在，常连用的时间状语有：for+时间段，since +过去的时间点，these days, so far, up to now, in the last/ past few years等。 现在完成时被动语态用法 即学