Unit4 Public transport Grammar and usage教学设计
单 元：Unit 4 Public transport
板 块：Grammar and usage
Thoughts on the design:
本课将分别从四个方面具体介绍现在分词和过去分词的用法（a v-ed or a v-ing like an adject ive, a v-ed or a v -ing like an adverb, passive and perfect forms of v-ing, the subject of v-ing or v-ed clause）。由于学生在上语法课时，往往会思想不集中或有枯燥厌倦之感，所以，教师采用“悟、导、练”的教学方法，即首先呈现一些典型例句，让学生通过朗读自己领悟语言规则，然后再引导他们在对比分析的基础上，进行归纳和总结。最后配一些相应的练习（填词、选择题、句型转换等）或创设各种真实的情境，来帮助学生运用所学的知识。这样的设计旨在激活学生的思维，调动其学习积极性，提高课堂效率。
Teaching aims:
After learning this period, students will be able to
1. understand how the v-ed or a v-ing can be used as adjective;
2. understand how the v-ed or a v-ing can be used as adverb;
3. summarize the rules in which a v-ed or a v-ing is used;
