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1、Unit 4 Life on Mars GrammarTeaching 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 aroun
2、d 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 Ex
3、planation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 sentencesWe 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 pilots licence When he was 16.Neil
4、Armstrong received his student pilots 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 1Dani
5、el is writing about visiting another planet. Help him rewrite the sentences using the words in brackets.1. 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 plan
6、et 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
7、walk on Mars.(ifnot )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 he was 30. 3. People might move to another planet in the future because of the increasing rapidly population. 4. Meals will not be as tasty as they a
8、re on the earth without fresh food. 5. It would be funny to play football on Mars because the gravity is low. 6. If you dont have special boots, you cannot walk on Mars.Exercises 2 把下面的复合句改成简单句1. He learnt to swim when he was eight years old.2. He could not go to the party because he had too much ho
9、mework.3. He cannot solve this problem if he has no help.Keys: He learnt to swim at the age of eight. He could not go to the party because of too much homework. He cannot solve this problem without help.B Using object clauses or simple sentencesWe can rewrite some object clauses in simple sentences
10、with prepositions like of and about.常用的一些动词和介词的搭配有：remind somebody of使某人想起Be sure/certain about对确信The smell of the pills reminds them that food on the Earth is tasty.The smell of the pills reminds them of the tasty food on the Earth.Are they sure that space travel will be very fast?Are they sure abo
11、ut the fast speed of space travel?Exercises 3Millie knows little about the planet Mars. She is asking Daniel for more information. Rewrite Millies sentences using the words in brackets. Millie: (1) Are you aware how far Mars is away from the Sun?Daniel: Yes. Mars is about 142,000,000 miles away from
12、 the Sun. It takes Mars about two Earth years to cycle around the Sun once.Millie: (2) Are scientists in agreement that living on Mars would be possible for humans in the future?Daniel: No. But theyre working hard to learn more about Mars.Millie: (3) Do they think that the low gravity on Mars might
13、be a problem?Daniel: Yes, they do.Millie: (4) Are you aware that transport could be like on Mars?Daniel: It could be much better than that on the Earth. However, scientists arent sure whether people could grow plants on Mars.Millie: (5) I wonder how many people would like to move to Mars. (6) I thin
14、k people should know that life on Mars would be different from that on the Earth.1. Are you aware _ (distance)?of the distance between Mars and the sun2. Do scientists agree _ (possibility)?about the possibility of living on Mars3. Have they thought _ (problem)?about the low gravity problem4. Are yo
15、u aware _ (transport)? of the transport on the Mars5. I wonder_ (number).the number of the people who would like to move to Mars6. I think people should know _ (differences). the differences between life on Mars and that on EarthMore exercises 4把下面的宾语从句改为简单句。 1. The photos remind me that I travelled to the UK fiv
