Unit4 Journey Across a Vast Land Discover Useful Structures 公开课导学案-2022-2023学年高中英语人教版（2019）选择性必修第二册

Unit4: Journey Across a Vast Land Period3 Discovering Useful Structures （过去分词和现在分词作状语） 一：看图片，在老师的引导说出一个含有状语从句的句子 图片1： 图片2： 图片3： 二：观察句子，得出结论： 1. Listening to the music,I start to dance. 2. Beaten by the sheep, Mr Wolf cried out loudly. 3. Studying harder and harder,you will pass the exam. Summary:过去分词和现在分词在句中都可充当_______,表示时间,原因,条件,让步,方式或伴随等。 三：What kind of clauses do you know? 第1步：说出下列划线部分的句子属于什么状语从句 1.When he was asked what had happened, he kept silent. 2.Because Mr wolf was beaten by the sheep, he cried out loudly. 3.If I am given a time machine, I will pay a visit to the future. 4.Although he was left alone at home, the little boy didn’t feel afraid at all. 5.The teacher entered the classroom, and he was followed by some students. 第2步：找出两个句子的主语，再找出从句部分的谓语动词，后判断主语和谓语动词之间是什么关系，最后改写非谓语形式作状语。 第3步：观察改写的句子，得结论 1. Beaten by the sheep, Mr wolf cried out loudly. 2. Asked what had happened, he kept silent 3. Given a time machine, I will pay a visit to the future. 4. Left alone at home, the little boy didn’t feel afraid at all. 5. The teacher entered the classroom, followed by some students. Summary:过去分词在句中作 。句子的逻辑主语和分词之间存在 关系。 练习一：选择题 Task2选择题： 1.________in a travel book,the large forest is a good place where we wanted to go. A.Finding B.Finds C.To find D.Found 2.________from the TV, there are a lot of creatures in the forest. A.Seen B.Seeing C.Being seen D.Saw 3._________by the guide,we gave up our idea finally. A.Warns B.Warned C.Being warned D.Having warned 4._________to go back to the hotel by the guide,we didn’t have any activities to kill the time. A.Asked B.Having asked C.To ask D.Asks 四：What kind of clauses do you know? 第1步：说出下列划线部分的句子属于什么状语从句 1. When I was walking in the street ,I came across an old friend of mine. 2. As I thought he might be at home,I called him. 3. If you head ahead,you will see a white house. 4. Her mother died in 1990,and