Unit13Thewaterplanet单元要点Wordstudy1.mariner2.scary3.disadvantage4.entertainment5.property6.range7.available8.salinity9.density10.absorb11.bottom12.estuary1.水手2.可怕的3.不利条件4.娱乐；招待5.特性；性质；财产；资产6.(在一定范围内)变动；变化7.可用的；可得到的8.海水的高含盐量9.浓度；密度10.吸收11.底面12.河口湾Usefulexpressions1.benefitfrom2.rangefrom…to…3.breakdown4.freezingpoint5.bemeasuredin…6.takeadvantageof7.onthebottom8.playatrickon9.callin10.facedangers11.environmentalpollution12.havefun13.avarietyoflife14.contributeto1.受益于2.从……到……变化;在……之间变动3.分解4.凝固点5.以……衡量6.利用7.在底部8.耍诡计;搞阴谋9.召集；来访10.面对危险11.环境保护12.玩得高兴13.各种各样的生命14.作贡献；有助于；促成Sentencepatterns&CommunicativeEnglish1.Thewaterisbeingusedto/for…2.99%ofthelivingspaceonearthisintheoceans.3.Lifeintheoceansrangesfromthetiniestplanktonallthewayuptogiantslikesharksandwhales.4.Whatisitthatmakestheoceansuchagreatplacetolive?5.Thenutrientsiswhateverfallsintotheoceanwillquicklybecomeavailabletootherlivingcreatures.6.Eventhoughthepurewateriswhatgivesseawateritsmainproperties,thesalinityofseawateraffectsbothitsweightandfreezingpoint.7.Ifitdidn’t,theoceanswouldbefrozensolid.Grammar复习情态动词的用法,表示能力、可能、要求、必须、肯定、许可、建议Topics&Writing1.Writeanexplanationparagraph.2.Writeaparagraphtodescribeaprocessusingwhatyou’velearnedfromthisunitandwhatyouknowaboutnatureandscience.用心爱心专心115号编辑
