1. Unit Nine Is there Life on Earth?

2. Warm-up Activity 1. Students are divided into pairs. 2. The teacher writes on the blackboard the following questions : 1) the Venus Institute of Technology the Venus Evening Star Venus Beings The Grubstart Zilches 2) earth’s surface in the area of Manhattan the Consolidated Edison Belt something that looks like a river metal particles stalagmite projections granite formations 3. Each pair is to figure out the meaning of these expressions, using context clues provided in the text. The teacher will sum up what the students have discussed

5. Key structures !.It is (was) that (who)… It is Tom who is responsible for the accident. It was in this very place that we met. 2.It is(was ) not until…that. It was not until two days ago that I knew the bad result. It was not until all the work had been done that we went home. 3.the more…,the more. The more you have,the more you want. The more work we give our brains,the more work they are able to do. The more, the merrier. The more in danger,the more courageous should be.

6. Language points 1.give sb some idea: enable sb to know about. 1).The map can give you some idea of the city’s size. 2).Can you give me some idea of the university. Get some idea of,have some idea. Have no idea 3).Do you have any idea of where he lives. 4).I have no idea how the brain really works. 2.be involved in:be mixed up or caught in…. 1).They are all involved in it, whether they like it or not. 2).A lot of people were involved in trouble. 3).She was involved in working out the plan. 4).Do not involve me in your matter. 5 ).she likes to involve others in her business. Be involved with sb :be closely connected with sb. He is deeply involved with his girl friend and feels he must marry her.

7. 3.suggest:show, hint,imply 1).Her red face suggests good health. 2).His yawning suggests that he is sleepy. Suggest sth to do suggest (to sb )that suggest doing sth 4.recall:remember 1).I recalled my last holiday with her. 2).Can you recall exactly what you saw last night? 3).The picture recalled to me my happy days at college. The picture recalled my school days to my mind. 4).The old clothes recalled the days of childhood to me. 5).The flowers recalled the garden to me. Remind+ sb + of+ sth recall +sth + to +sb

8. 5.put…to ( a good, better)use: make a good use of !).You should put to use everything you have learnt. 2).I felt you should have put your savings to a better use put into practice put into operation put into words put to a test 6.differ from: be different from. 1) My idea differs from yours 2) The two brothers differ greatly from each other 3). Sorry. I differ with you on this point. 7.compare to: be regarded as being like or equal to. 1).He always compares life to voyage. 2)Beautiful girls are usually compared to flowers. 3).Books can be compared to friends. Compare with: examine one thing (person) together with another. 4).I have done little this year, compared with what I did last year. 5).He compared his watch with mine.

9. 8.limit 1).There seems to be no limit to his patience. 2). There is a speed limit of 30m ph in cities. Have ( no ) limit set a limit to There is a limit to There is a limit to everything With limits limit for space without limit limits in number Limited in ability limit in intelligence limit for money 9.head, brain, mind metal have a good brain use one’s brain rock one’s brain tax one’ brain He has a scientific mind in one’s mind change one’s mind be of the same mind Make up one’ mind metal illness metal patient metal treatment 10.complex,complicated. a complex sentence a complex proposal a complex argument The sound system in English is very complicated Complicated machine complicated deals complicated people’ relationship