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表示两者进行比较的句式结构。
教学难点：
形容词和副词比较形式的特殊情况。
两者进行比较的句式结构的句型运用。
教学准备：
多媒体课件，单词卡片， magic hat
教学过程：
Step1 Lead-in
T: I have a sister too. My parents always compared me with her. It made me feel bad. Do your parents always compare you with others?
T: With whom?
S: ...
T: Sisters, brothers, friends, classmates, Xiao Ming next door.
T: When comparing, what word do we always use?
S: than
Step 2 Presentation
1. T: For example...
Show the pictures and compare them by “than”. Find the rules of comparative forms of the adjective and adverb and then finish the chart and point out how to add “-r” and how to double the final letter and add “-er”.
T: Now let’s have a try. I will hand out some cards to you and there are some adjectives and adverbs on the cards. Think about which line the word should be. If I say “-er”, the one who get the cards must come up to the board and stick it to the board as fast as you can.
The sudents try to find the right rule for his own words to get familiar with the rules and learn from the mistakes.
Review the rules again.
Step 3 Listening
T: We have known about the rules of comparative forms. Now there are three pairs of twins in the picture. Then let’s have a omparation of them. Please listen to the tape and get the right words for the sentences. First... Second...Third...
T: Look at the sentences carefully and fill in the blanks of Task 4.
Lead students to find the patterns of comparative sentences.
3. Check answers.
Step 4 Practice
T: So we can find the word “than” is everywhere in our life. Maybe you don’t like it, but if you try to see it in a different view, everything may change, just like the picture, an old woman to a beautiful lady, bad to good. In fact, if you change your view, the word “than” can make you better. And today Miss Ning got a hat. It can help you to become better.
Introduce the rule of Task 5 by asking and checking.
T: Now I say “I’m beautiful.” If you get the hat, what will you say?
T: What should you do then?