譯林版英語九年級下冊第四單元知識點

1、9Bunit4 備課Welcome1. 火星生活life on Marson Marson the Earth2. 從沒想過太空旅行have never though about travelling into spacethink of/about doingtravel into spacein space3. 我也沒（3）Me neither.Me either.Neither I.4. 你認(rèn)為火星上生活如何？How do you like ？What doyou thinkof?5. 我原以為你喜歡。Ithought+從句（從句用過去時態(tài)）6. 夠到。 。 。 get to/reach

2、7. 住在其他星球liveon otherplanets8. 夢想著去另一個星球dream about/of doing9. 火星重力小。There is less gravity on Mars.10. 不會有污染。There would be no pollution.would， could 表示想象的可能性11. I hope so. I hope not.I m afraid so. I d nmota.fraiI think so. I don t think so.Reading12. 到下個世紀(jì)by the nest centuryby + 將來時間將來時by now=so f

3、ar 現(xiàn)完by 2009 過完13. 變得越來越擁擠more and more14. 因為人口增長迅速because of the rapid increase in populationthe increase in sth.15. 有望。It is hoped that 16. 重頭開始start all over again太慢沒法載大量的乘客去往火星too slow to carry large numbers of passengers to Mars large numbers of 大量的，也可以說a large number ofa large number of +名詞復(fù)數(shù)，

4、做主語，動詞用復(fù)數(shù)；the number of +名詞復(fù)數(shù)，做主語，動詞用單數(shù)。 修飾number的形容詞用large / smallIs the number of pandas in China larger than 10,000? too to ；enough+ n. / adj.（adv.）+enough to do sthThe ice is too thin for us to skate on.The ice isn t thick enough for us to skate on.(The ice is so thin that we can t skate on it.)

5、17. 隨著科技發(fā)展18. 乘坐在以光速運(yùn)行的航天器只需花20 分鐘travel at the speed of lighttravel at high speedtravel at a speed of fifty kilometres an hour19. 火星之旅the journey to Mars復(fù)習(xí) the trip to South Hill / the visit to Beijing20. 感到想吐feel ill21. 離了氧氣和水沒法生存can' t survive without or 22. 以藥片的形狀in the form of 23. 火星上重力只有地球

6、的八分之三three-eighths of that on the Eartha) 分?jǐn)?shù)的表達(dá)方式b) 分?jǐn)?shù)做主語，謂語看后面的名詞Two-thirds of the work has been finished.Two-thirds of the students are willing to move to Mars.c) that 替代詞 = the+UC./C.sing.those = the + C.pl.24. 防止。飄到太空中去 prevent/stop/keep from doing25. 比起。 Compared with ，把-與-比較 compare with 26. 有

7、一臺連接到星際網(wǎng)絡(luò)的電腦connected to 27. 在網(wǎng)絡(luò)學(xué)校跟著電子老師學(xué)習(xí)at online schools28. 不僅有挑戰(zhàn)性，而且有趣A as well as B (強(qiáng)調(diào)A)29. 人的總數(shù)30. 對。有巨大幫助 be of great help to /be very helpful to31. 快速增長Grammar32. 太空之旅的高速33. 火星離太陽多遠(yuǎn)？火星離太陽約142000000英里。34. 火星繞太陽一周約兩年。35. 達(dá)成一致 be in agreement that be in agreement about36. 低重力37. 火星生活不同于地球生活。38

8、. 意識到。be aware that be aware of 39. 相似40. 在比地球空氣稀薄得多的星球上難以呼吸。41. 背著氧氣罐 have on one ' s backInte-task43. 實施一次調(diào)查44. 想搬離地球的學(xué)生所占的百分比ooo 的百分比是。the percentage of .is What percentage of children were absent?What percentage of babies die of this disease every year?num. + per cent百分之。+復(fù)數(shù)可數(shù)名詞謂語用復(fù)數(shù)形式不可數(shù)名詞謂語用單數(shù)形式Ten per cent of the pupils are absent today.45. 錯過第一部分46. 以討論開始 start/end with 47. 值得冒險be worth the risk/taking the risk48. 使我擔(dān)憂sth. worry sb.復(fù)習(xí) satisfy 用法49. 畢竟50. 人類已經(jīng)去過月球。51. 住那兒會生病52. 一種不同的生活53. 犯拼寫錯誤54. 語法規(guī)則55. 考試取得好成績 get good results in 56. 在筆記本上抄寫生詞57. 記英語日記keep a diary58. 提高