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必修2《Learning about Language》最新PPT课件优质课下载
you know, I went to Xi’an ten years ago. How
time flies! I still remember its beauty and the kind
citizens there. I have a good impression on Xi’an,
but it’s a pity that I have no time to visit it for
myself at present. Could you please tell me some
great changes in Xi’an in the past few years?
Looking forward to your early reply.
Yours,
Peter
Examples 1. 西安已经盖起了许多现代化大楼。 2. 大多数游乐公园已向公众免费开放。 3. 四条地铁线路建成并已开通。 4. 共享单车已经投放使用好几年了。
Learning targets
1. Discover and understand the
structure of the present perfect
passive voice.
2. Master the basic usages of the
grammar.
3. Apply the grammar into writing.
Look at the following sentence, paying
attention to the underlined part.
Example:
Over time I have been changed a lot.
Presentation
First as a PC, and then as a laptop, I
have been used in offices and homes
since the 1970s. ( Line 16 )