基本信息
unit 3 computers
period 5 grammar 教学设计
i. teaching contents：the present perfect passive voice
ii. teaching aims：
1.understand the uses of the present perfect passive voice
2. use the present perfect passive voice correctly
iii. key points & difficulties
key points:
to get the students to know the present perfect passive voice and learn how to use the present perfect passive voice.
teaching difficulties
to enable the students to use the present perfect passive voice correctly
iv.teaching methods
discussing, summarizing and practicing.
v. teaching procedure:
step 1: lead-in
review the verb tenses and the future passive voice they have learnt in last unit.
step 2: grammar explanation.
teacher help the students deal with how to express the present perfect passive voice.
1.the structure of the present perfect passive voice is:
have / has ＋ been＋~ed
