约1520字。

     Lesson3  The Sea World
　　Teaching goals:
　　1. To get familiar with descriptive texts
　　2. To practise using sea animal vocabulary
　　3. To practise using parative and superlative structures.
　　Teaching procedure:
　　Step 1. Leading-in
　　Water covers about 75% of the earth’s surface. In it swim billions of fish from over 25000 species. These fish can be tiny or huge. They can be round, box-like, or long and slim.
　　Let Ss looking at the pictures and identifying the fish and animals. Ask Ss if any of them know other animals which live in the sea.
　　Step 2. Reading
　　Elicit the title of each section of the brochure and ask Ss which sections they think will be more interesting for them. Then, let Ss skim the brochure quickly and concentrate on the sections that appeal to them. At last, let Ss read the context again, then, check the answer of exercise 2&3.
　　Exercise 2. Read the brochure. Find where you can see these things in Underwater World:
　　1.  fish which use a light to attract food        Virtual Reality Voyage
　　2.  dolphins in performance                 Sea Theatre
　　3.  fish that appear to fly in the water         Ocean Floor
　　4.  sea creatures that children can touch       Discovery Pool
　　5.  a big iceberg                          Polar World
　　Exercise 3. Let Ss read aloud the first example with as many expressions as possible. Then, let Ss read the other ments and match them to the areas of the aquarium. At last, check answers.
　　Answers: 2. polar world     3. discovery pool    4.virtual reality voyage
　　Read the text again and pay attention to the linking words used to contrast different ideas or opinions (but/ on the one hand/ on the other hand/ however) and ask Ss to translate them into Chinese.
　　Step 3. voice you opinion
　　Let Ss discuss which part of the “Underwater World ” they would like to visit and why. Then, encourage some groups to report their results to the class. At last, ask Ss if they have ever been to a similar aquarium or sealife center-if so, encourage them to tell the class what it was like.
　　Step 4. Grammar: parison of adjectives
　　Firstly, review the parison by asking Ss to find all the examples of parison in the brochure. Secondly, read the uses (a-c), and match them with sentences1-4 . And then let Ss do Exercise 6 in pairs. At last, ask Ss to read Grammar Summary 2 for reference.
　　1) 同级比较往往由"as + 形容词/ 副词的原形 + as"的句式表达；当然也要注意它的否定形式。第一个as的前面可以加上表示倍数的词、或是某些副词修饰语