1.Earth[??θ]

n.theworld;theplanetthatweliveon.onEarth在地球上Themoongoesroundtheearth.月亮繞著地球轉。2.About70%oftheEarthiscoveredbywater.(29)地球上70%被水覆蓋。

百分數(shù)用法：“百分數(shù)+of+n”作主語時，謂語動詞的單復數(shù)要與of后面名詞的單復數(shù)保持一致。e.g:90%ofthestudentsaregood.3.part[pɑ?t]n.somebutnotallofathing部分(1)常指一個整體中的某一“部分”、“局部”(2)為可數(shù)名詞，用于單數(shù)形式時，可不用不定冠詞修飾。Translate:大樓的一部分毀于火災。_______________________________________Learn

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words.Partofthebuildingwasdestroyedinthefire.4.land[l?nd]n.陸地，與sea、sky相對，都屬于不可數(shù)名詞。ontheland在地上

land偏向于地理概念，是塊地方就是land。Fishcannotliveonland.5.field

[fi?ld]n.afieldisanareaofgrassinaparkoronafarm.田地；田野

inthefield

field特指可以耕種和種植農作物的土地。Thepeasantsareworkinginthefields.6.ground[ɡra?nd]n.thesolidsurfaceoftheearth地面

ontheground在地面上ground主要指大地、陸地的表面，也指土壤、場地、泥土。Thelittleboywaslyingontheground.7.pollution

[p??lu??n]n.theprocessofmakingair,water,soil,etc.污染airpollution 空氣污染environmentalpollution環(huán)境污染waterpollution 水污染pollute

[p??lu?t]v.污染=makesth.dirtyLearn

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words.8.protect[pr??tekt]v.保護

protectionn.防衛(wèi)短語：protect…from/against…保護…免受…（傷害）拓展：prevent/stop/keep/…fromdoing…阻止某人做某事Practice:Weshould________theEarth________being________.我們應該保護地球免受污染。Learn

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words.protectfrompollutedActivityWritethecorrectformsofthewords.1.protect (名詞) ____________2.provide (近義詞) ____________3.pollution (動詞) ____________4.part (復數(shù)) ____________5.land (近義詞) ____________6.large (近義詞) ____________7.important (名詞) ____________protectionofferpollutepartsfield/groundbigimportance12.TheEarthprovidesuswithair,waterandfood.provide[pr??va?d]v.提供短語：providesth.forsb.=Providesb.

withsth.為某人提供某物拓展：offersb.sth.=offersth.tosb.提供某人某物Practice:(1)Thewaiterprovideddeliciousfood______us.(2)Ihopeyoucanprovideme_____moreinformation.Learn

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words.forwith13.quarter:可數(shù)名詞，“一刻鐘，四分之一”onequarter四分之一threequarters：四分之三分數(shù)表達：（1）分子用基數(shù)詞，分母用序數(shù)詞；（2）分子大于1時，分母用復數(shù)形式。e.g:onesixth:六分之一twothirds:三分之二Learn

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words.14.Weburnthingstomakeenergy.burn[b??n]及物動詞，燃燒，過去式：burnt。Energy[?en?d?i]n.能量，能源短語：makeenergy制造能量，獲取能量Translate:(1)我昨天燒傷了手指。__________________________

(2)人們利用水、風和太陽來獲取能量。

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words.Iburntmyfingeryesterday.Peopleusewater,windandsuntomakeenergy.6.Weputourrubbishintotheseaandundertheground.put…into

…把…倒入…拓展：putup

舉起

putoff推遲puton穿上Practice: (1)記得把你的食物放進餐盒里。

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(2)Putyourhands____andsingtogether.

A.off B.on C.up D.intoPresentationLearn

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words.Remembertoputyourfoodintoyourlunchbox.C7.ItisimportantforustoprotecttheEarthforourfuture.Itis+形容詞+for/ofsb.+todosth.對某人來說做某事是….It是形式主語，todosth.是真正的主語forsb.是指事情的性質，ofsb.是指人的品質，有時可省略Translate: 對我們來說，學好英語是很重要的。

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words.Itisimportantforustolearn