约2590字。

　　Unit 8 New ideas and inventions
　　Section one
　　Step I. Study the new words.
　　Step II. Reading
　　Read through the whole text and let them do the following simple questions decide T or F.
　　1. These ancient alchemists made the first explosives.
　　2. The ancient Chinese realized that the mixture could be used on something different at once.
　　3. At first the Chinese used new material to make the fireworks.
　　4. Bacon got credit for making the black powder because he used his invention.
　　5.  Alfred Nobel left his money for prize after he died.
　　Read the text more carefully and then find out the following phases:
　　1. burst into  2. burn down   3. be pleased with  4. over and over
　　5. look into   6. put one’s mind  7. speed up    8. be connected to
　　9. stay in shape  10. take in    11. break off   12. so far
　　Step III. Practice
　　1. Translate the following phrases, compare verb+ing and verb+ed.
　　boiling water  __________  boiled water  ____________
　　a boring book __________  a bored reader ____________
　　a closed store __________  the closing time ____________
　　2. 动词-ed形式接触：找出下列句子的-ed形式，揣摩其用法。
　　(1) The mixture started to bubble and boil.
　　(2) They finally designed a weapon that was powerful.
　　(3) They took a hollowed piece of bamboo and filed it with the powder.
　　(4) Then they stuffed arrows in it.
　　(5) One-hundred years later, a man named Berthold Shwarts looked into this black powder.
　　(6) It could be used to blow stones out of the ground.
　　Step IV. Grammar: 过去分词作定语、表语
　　过去分词分为及物动词的过去分词和不及物动词的过去分词；及物动词的过去分词作句子的表语和名词的定语及物动词的过去分词时，强调该动作完成和被动；而不及物动词的过去分词则仅仅强调该动作已经完成，如 fallen leaves（落叶） ,the risen sun（升起的太阳）, fro（冰牛奶）, boiled water（凉开水）等。高考主要考察及物动词的过去分词作句子的表语和定语的用法。
　　Section Two and Section Three
　　Step I. Study the new words.
　　Step II. 难句分析
　　1. Some ancient Chinese alchemists were mixing some ingredients together to form something（they thought would make them live forever）.
　　（1）省略了定语从句引导词that。
　　（2）尽管that在定语从句中并不作宾语，但是由于插入成分they th