Unit 4 Astronomy: the science of the stars(Period 1　Warming up and reading)

unit 4 astronomy: the science of the stars

單元要覽類別課程標(biāo)準(zhǔn)要求掌握的項目話題science of the stars; the development of life; space travel and gravity詞匯astronomyn. 天文學(xué)existvi.  存在; 生存systemn. 系統(tǒng); 體系; 制度thusadv. 因此; 于是religionn. 宗教; 宗教信仰dioxiden. 二氧化物theoryn. 學(xué)說; 理論biologyn. 生物學(xué)atomn. 原子biologistn. 生物學(xué)家billionpron. & n. & adj. （英）萬億; （美）十億puzzlen.  迷; 難題　vt. & vi. （使）迷惑; （使）為難globen. 球體; 地球儀; 地球gravityn. 萬有引力; 重力violentadj.  猛烈的; 激烈的; 強暴的floatvt. & vi. （使）浮動; （使）漂浮　n. 漂浮物carbonn. 碳gentleadj.  溫和的; 文雅的atmospheren. 大氣層; 氣氛physicistn. 物理學(xué)家unlikeprep. 不同; 不像climaten. 氣候fundamentaladj. 基本的; 基礎(chǔ)的crashvt. & vi. 碰撞; 墜落harmfuladj. 有害的spaceshipn. 宇宙飛船acidn. 酸pulln. & vt. 拉; 拖; 牽引力chainn. 鏈子; 連鎖; 鎖鏈satelliten. 衛(wèi)星; 人造衛(wèi)星multiplyvt. & vi. 乘; 增加massn. 質(zhì)量; 團(tuán); 塊; 大量oxygenn. 氧exhaustvt. 用盡; 耗盡短語solar system太陽系block out擋住（光線）in time及時; 終于cheer up感到高興; 感到振奮lay eggs下蛋now that既然give birth to產(chǎn)生; 分娩break out突發(fā); 爆發(fā)in one’s turn輪到某人; 接著watch out密切注視; 當(dāng)心; 提防carbon dioxide二氧化碳prevent. . . from阻止; 制止重要句型1. what it was to become was uncertain until between 4. 5 and 3. 8 billion years ago when the dust settled into a solid globe. (be to do; what-clause as the subject)2. the earth became so violent that it was not clear whether the shape would last or not. (so. . . that; it is/was not+adj. +whether-clause)3. what is even more important is that as the earth cooled down, water began to appear on its surface. (what-clause as the subject; that-clause as the predicative)4. it was not immediately obvious that water was to be fundamental to the development of life. \[it is/was (not)+adj. +that \]5. so whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (whether-clause as the subject; depend on+whether-clause as the object)功能instructions:please pay attention to. . . 　please check that. . . . 　you need. . .don’t forget to. . .                                                                                                                                                                                                        make sure that. . . .                                                                                                                                   watch out for. . .