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2. Learn to use conditional adverbial clauses guided by unless.
Difficulty: Be able to properly use if…not and unless to transform sentences into each other.
Teaching method: Task-based method, Discussion method
Teaching aids: Multimedia, whiteboard
Teaching procedures:
Step 1: Warming-up and leading-in
Free talk: What will you do if you are happy?
Watch PPT and answer a question according to some pictures:
What will you see if you go to Hongshan zoo?
Observe the example sentences and summarize the usage of if to introduce conditional adverbial clauses, and pay attention to the tenses of main sentences and clauses.
Step 2: Presentation
Help Millie complete the exercises in part A1 on page84. Discuss the answers in groups.
Complete the textbook with the answers checked between groups on page 84 and summarize work out the rule.
After discussing part A2 on page85 in groups, and ask two students to read the dialogue and check it.
Read part of the text on page 85 to get an idea of the usage of unless.
According to the example sentence given by PPT, and discuss the conversion between if…not and unless.
Discuss the usage of unless in groups according to the example sentence and complete the exercise on page86.
Summarize work out the rule on page86.
Step 3: Exercise
用所给动词的适当形式填空。
If it ________(not rain)tomorrow, we are going to play football.
If she gets up late, she _________(not catch)the early bus.
Unless it _______ (rain), we are going on a picnic this Saturday.
The little boy ________(not stop)crying unless you give him what he wants.
If there ______(be)fewer trees, there ______(be)more pollution.
根据要求改写下列句子。
Millie will get home late. Millie will miss her favourite TV programme. (用if连接两个句子)
You won’t improve your skills unless you practise hard.
(用if…not改写为同义句)
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