英语人教版八年级下册Unit 5 Grammar 教学设计

Unit 5 What were you doing when the rainstorm came?
Section A Grammar focus-4c
Teaching objectives：
Language objectives:
1.Master the key words and expressions: at the time of, rain heavily, begin, while
2.Learn when-adverbials and while-adverbials
3.Consolidate the usage of past continuous tense
Ability objectives:
1. Learn to talk about the past events
Moral objectives:
1.Motivate the students’ study interest and develop their imagination by describing what was happening
2.Teach the students to remember some important moments in life and cherish the life
Teaching key points:
1.The usage of when-adverbials and while-adverbials
2.The usage of past continuous tense
Teaching difficult points:
1.How to distinguish the usage of when-adverbials and while-adverbials
2.How to use the past continuous tense to tell the things happening in the past. Teaching methods:
Task -based approach, cooperative approach
Teaching procedures:
Step 1 Learn some new words
Step 2 Show a map of china to introduce the earthquake in Wenchuan in 2008.
Then show some sentences to tell the students what my classmates and I were doing when the earthquake happened.
I was having an English class when the earthquake came.
I was taking a shower when the earthquake began.
I was sleeping at the time of the earthquake.
I was reading at home at the time of the earthquake, because it rained heavily
outside.
Then ask the students to observe these sentences and lead them to find the
structure “was +doing”. That is the grammar we’ll learn in this class, the past
progressive tense.
Step 3 Show more pictures to learn the present progressive tense and the past progressive tense in pairs. Then show all the sentences on the screen and
ask the students to think and make summaries by themselves.
思考：根据例句，概括现在进行时和过去进行时的基本构成和基本用法。

He is sleeping now. He was eating at 8:00 am yesterday.
He is cutting down trees now. He was talking on the phone at this time
yesterday.
They are running now. They were dancing at 3 o'clock yesterday
afternoon.
总结一：
现在进行时的基本构成：________ + _______.
过去进行时的基本构成：____________ + ______.
总结二：
现在进行时的基本用法：表示或现阶段
动作。

过去进行时的基本用法：表示某一时刻或某一时间段内
动作。

Step 4 Group work
Step 5 Play a guessing game to practice the different sentence structures of the tense.
Then make a summary for the past progressive tense.
Step 6 Learn the when-adverbials and while-adverbials through observation.
1. when引导的时间状语从句，从句中的动词可以是非延续性动词也可以
是延续性动词。

while引导的时间状语从句，从句中的动词必须是延续性动词。

2. 当主句和从句都是用进行时时，只能用while,表示“与此同时”两个
动作同时进行，若两个动作含有对比意义，还可理解为“然而”。

3. when引导的时间状语从句，从句中的动词是非延续动词，从句中的时
态一般用一般过去时。

Step 7 Practice·
4a. Look at the table and write sentences with both while and when.
Step 8 Speaking
First，watch a short video about the hero Lin Hou in the earthquake in
Wenchuan. Then finish an English report about this boy. At last, ask several
students to do the report.
the earthquake happened, the 9-year-old boy, Lin Hao,
(have) a class with his classmates. Some of them
(make) notes some (listen) to the teacher carefully. The earthquake happened so quickly. They had no time to run away. they were caught under the stones(石头), Lin Hao told his classmates to sing songs to cheer up. Some students were crying Lin Hao was trying to climb out of the stones. At last, he saved(救) 2 of his classmates out of the classroom. People all called him “little hero(英雄)”.
Step 9 Homework
After class, please finish 4b on page 36.。