牛津译林版八年级上册Unit 8 Natural disastersGrammar past Continuous tense 教案

英语（八年级上册）
Unit 8 Natural disasters
Grammar
I. Teaching aims and learning objectives
By the end of the lesson, students should be able to:
1. learn the usage of past continuous tense;
2. use “when” ,“while” and “as” as conjunctions of time correctly
II. Teaching contents
1. New words and phrases: break, break down, because of
2. Past continuous tense:
III. Focus of the lesson and predicted area of difficulty
1. Learn the usage of past continuous tense;
2. Use “when” ,“while” and “as” as conjunctions of time correctly.
IV. Teaching procedures
A Past continuous tense
Step 1 Lead-in
Watch some pictures of natural disasters.
Step 2 Presentation
1. Look through Mr Wu’s moments, try to go over present continuous tense.
It is raining heavily now／at the moment／at present.
They are living in a small town in America.The town is suffering from (遭受) a flood—a natural disaster(自然灾害).
2. Watch the video.(flood)
3. Read Mr Wu ‘s moments, then answer the questions.
The small town is very beautiful. But there was a flood. Mama Jenny and Jack lost their home. They were staying in a big house while it was raining heavily at 7a.m.last Monday. On the first day, My friend Peter arrived there. Many people were crying at that moment. They weren’t living happily at that time. Peter decided to help them.
Where were Mama Jenny and Jack at 7 a.m. last Monday
What were many people doing at that moment
Were they living happily at that time
5. Compare the sentences, then work out the rule.
It is raining heavily now.
They are living in a small town in America.
We use present continuous tense to talk about the things that are happening now.
◆They were staying in a big house at 7a.m.last Monday.
◆ Many people were crying at that moment.
◆ They weren’t living happily at that time.
We use past continuous tense to talk about the things that were happening at a particular(详细的，特别的) time in the past.
We use past continuous tense when there is a phrase like :at 7a.m. last Monday; at that time;
at that moment;this time last Monday;from 7 p.m to 9 p.m. yesterday and so on to talk about the things that were happening in the past.
6. Exercises.
Complete the dialogue on wechat.
Complete Mr Wu’s blog.
7. Look through the moments.( Watch the video).
Answer the questions.
Simon: Were people living happily at that moment
Simon: Was the glass falling down
Millie: Was Peter repairing the house at that time
Sandy: Were some people reporting Peter’s story
Work out the rule:
Past continuous tense in ‘Yes/No’ questions
____ /_____ + _______ + ______？
Yes, subject +____ /_____;
No, subject+______/_______.
B Use when/while and as
Step 1 Presentation
1. Look at the pictures.
2. Read some sentences.
3. Work out the rules.
◆When two ______ actions went on at the same time, we can use the past continuous tense in both clauses(从句) and ‘_____’ to join them.
◆When a shorter action happened while a longer action was going on, we can use ‘when’ or ‘while’ or ‘as’ join the two actions. We use ‘ while ’ ‘ when’ ‘ as’ before the _______ action We use ‘______’ before the shorter action.
◆We use the__________________ for the longer action. and the_________________ for the shorter action.
Step 2 Consolidation
1. Describe the pictures by using ‘when’/ ‘while’ /‘as’ .
2. Discussion.
3. A report.