单 元：Unit 3 Back to the past
板 块：Reading
课堂设计指导思想：
通过听写、翻译、造句、替换、填空、完句、情景、故事（用所操练的语言点编故事）等活动操练语言点。
Teaching aim s:
Master some language items.
Teaching procedures:
Step 1 Practice of language it ems
1. similar: be similar to …
the same …as/that …
be different from …
