2018届牛津译林版九年级下英教案：Unit 4 Grammar.docVIP

Unit 4 Life on Mars Grammar Teaching aims: Master conversion between simple sentence and complex sentence. Teaching procedures: Step 1 Present some new words. aware adj. 知道，意识到 e.g. Are you aware how far Mars is away from the sun? circle vt. 围绕，将一圈起来 e.g. It takes Mars about two Earth years to circle around the Sun once. agreement n. 一致，同意 e.g. Are scientists in agreement that living on Mars would be possible for humans in the future? distance n. 距离，远处 e.g. Are you aware of the distance between Mars and the sun? possibility n. 可能性 e.g. Do scientists agree about the possibility of living on Mars? Step 2 Explanation 简单句和复合句的转换 我们可以用介词短语把状语从句转换成简单句，我们可以用介词把宾语从句和定语从句转换成简单句 A Using adverbial clauses or simple sentences We can rewrite some adverbial clauses in simple sentences with at the age of, because of and without. 转换时要注意时态和意思的一致性和准确性。 Neil Armstrong received his student pilot’s licence When he was 16. Neil Armstrong received his student pilot’s licence at the age of 16. People might float in space because the gravity is slow. People might float in space because of the low gravity. Humans cannot survive if there is no food, water or oxygen. Humans cannot survive without food, water or oxygen. Exercises 1 Daniel is writing about visiting another planet. Help him rewrite the sentences using the words in brackets. Neil Armstrong took his first flight when he was only six. (at the age of) 2. Yuri Gagarin became the first man to go into outer space at the age of 30.(when) 3. People might move to another planet in the future because the population on the earth is increasing rapidly. (because of) 4. If there is no fresh food, meals will not be as tasty as they are on the earth. (without) 5. It would be funny to play football on Mars because of the low gravity. (because) 6. Without special boots, you cannot walk on Mars.(if…not ) Keys: 1. Neil Armstrong took his first flight at the age of six. 2. Yuri Gagarin became the first man to go into outer space when