"The first thing (I tried to do) was to see if there were products (that might help me), but there only seemed to be powders designed to kill snakes.我设法做的第一件事情是看看是否有能帮我忙的产品，但是好像只有一些用来捕杀蛇的粉

"Between the outside and inside walls of the bowl there is some jelly, which freezes hard when cooled. =when it is cooled 在碗的内外侧，有一些冰果冻， 冷却时他们会冻得很结实。

Nor will you receive a patent until a search has been made to find out that your product really is different from everybody else's. (倒装) 直到做了一次调查研究后你的产品确实与众不同， 这时你才会获得专利。

Step IV Comprehending

Task1: Exercise 1

T: Now , please look at Exercise 1 on page 21. Listen to the recording of the passage to get the answers to the questions. While listening, pay more attention to the correct pronunciation and tone. Then read the text by yourselves to get the answers to the next questions. You can work in groups.

Task2: Exercise 2

Now I'd like you to go on and solve the problems in Ex 2.

Step V Homework

Ask the students to do the followings.

1. Go over the whole passage and learn the key sentences in the text by heart and prepare for the in-class blank filling.

2. Prepare for Leaning about Language and Using Structures.