Book 3 Unit 4 Astronomy: the science of the stars 编者：李吉强 Period Five Listening and speaking

1. Book 3 Unit 4 Astronomy: the science of the stars 编者：李吉强 Period Five Listening and speaking

2. 教学目标 1. Get the main idea of each passage. 2. Improve the students’ listening skills. 重点难点 Develop the students’ listening skills.

3. 课堂探究 I. Page 30 in the Student’s Book 1. Read these words. Look up the ones you are not familiar with in your dictionary. 1) theories_____ 2) gravity_____ 3) universe _____ 4) black hole_____ 2. Listen to the tape and finish Exercise 2 on Page 30 in the Student’s Book.

4. 3. listen to the tape again and fill in the blanks. 1) At first, people thought the ________ was the center of the ________. 2) Isaac Newton said that something must be pulling the apple back to earth, he called it “______” . 3) Bigger objects have _______ gravity than smaller objects. 4) The larger the object, the _______ space-time bends, so time goes _______ in very strong gravity.

5. Ⅱ. Page 62 in the Workbook 1. Read these words. Look up the ones you are not familiar with in your dictionary. 1) instruments ______ 2) astronaut_______ 3) gradually ________ 4) opportunity ________ 2. Listen to the tape and finish Exercise 2 and Exercise 3 on Page 62 in the Workbook.

6. Ⅲ. Page 65 in the Workbook 1. Read these words. Look up the ones you are not familiar with in your dictionary. 1) Hubble telescope _________ 2) oxygen ________ 3) breathe_______ 4) engine_______ 5) waist_______ 2. Listen to the tape and finish Exercise 2 and Exercise 3 on Page 65 in the Workbook..