高一英语Unit4教案

高中《英语》必修 3 教案

第四单元

2. Intensive reading Allow students to read the passage carefully this time to get the important details, and then finish the following: 1) Put the order of development of life into a timeline. (1) Insects and amphibians appeared. (2) Dinosaurs appeared. (3) The earth became a solid ball. (4) Small plants grow on the water. (5) Reptiles appeared. (6) Plants begin to grow on dry land. (7) The earth was a cloud of dust. (8) Water appeared on the earth. (9) Shellfish and other fish appeared. (10) The universe began with a “Big Bang”. (11) Clever animals with hands and feet appeared. (12) Mammals appeared. 3. Reading and discussion Read the text a third time and then work in pairs to discuss the following questions. 1) Why was the earth different from the other planets? 2) Why did the plants grow before the animals came? 3) Why is it wrong to show films with dinosaurs and people togethe

r? 4) There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it? 5) What problem is caused by human beings? (Let students have enough time to read the passage carefully and discuss the questions with their partners. Encourage them to express their own ideas. )

Step 5 Discussion After reading the passage, let students discuss the following questions. 1. Why do you think that humans are the cleverest animals on the earth? 2. Do you believe that there is life on other planets? Why or why not? 3. Do you think it is possible that one day people will move their houses to other planets?

Step 6 Consolidation Ask students to retell the passage with the help of the following. a cloud of dust→a solid ball→presence of water→small plants grow on the water→shellfish and other fish appear→plants begin to grow on dry land→insects and amphibians appear→retiles appear→dinosaurs appear→mammals appear

Step 7 Homework 1. Learn the useful new words and expressions in this part by heart. 2. Read the reading passage again and try to talk about how life began on the earth in your own words.