Unit 4 Grammar and usage 2 学案 2020-2021学年高一英语牛津译林版 2020 必修第三册

B3U4 Scientists who changed the world Grammar and usage 2 一、Learning goals: 1. apply the rules of verb-ed forms 2. know the differences between verb-ing forms and verb-ed forms 二、导读导学 1、观察语法现象，总结现在分词过去分词区别，并运用 2、完成相关练习 一．过去分词与现在分词作定语时的区别 As we all know, China is a developing country. The visitor came from a developed country. 意义 形式 形式 语态 时态 过去分词 现在分词 [即使演练1]用分词作定语补全句子 尽管仍是夏天，但地上有很多的落叶。 Even though it is still in summer, there are on the ground. 二. 过去分词与现在分词作状语时的区别 Following the old man, we went upstairs. Followed by the old man, we went upstairs. [归纳] 过去分词表完成、被动，与句子主语之间是动宾关系；现在分词表进行、主动，与句子主语之间是主谓关系。 　[即时演练2]用所给词的适当形式填空 ① (not know) what to do, he asked his good friend for help. ② (give) more attention, the flowers could have grown better. ③ (read) carefully, he found something he hadn't known before. 三. 过去分词与不定式、现在分词作宾语补足语时的区别 We found Jim lying on the grass just now. We found the boy knoc