Lesson8:WhyArePlantsImportant?I.Learningaims:Masterthenewwordsandphrases:pleasant,shade,basic,soilII.Learningimportantanddifficultpoints:1)bemadeof/in/from/by2)without的用法pleasantshadebasicsoilNewWords★Whichdoyoueatmore,plantsormeat?★Canwelivewithoutplants?Whyorwhynot?★Whatdopeopleuseplantsfor?ThinkAboutIt!Let’sDoIt!Inasmallgroup,makealistoftheplantsyoueateveryday.Whatwouldhappentousiftherewerenoplants?Tryusingthisphrase:“Ifwehadnoplants,________.”LanguagePointswithout是介詞，后面接名詞或動名詞，意為“沒有；在沒有……的情況下”，既可以放在句首也可以放在句尾。反義詞是with。如：

Inaword,wecan’tlivewithoutplants.

總之，我們離不開植物。Withoutwater,fishcan’tlive.沒有水，魚不能活著。

bemadeof；bemadefrombemadein；bemadeby（1）bemadeof意為“由……制成”，從制成品上能看出原材料來。如：Thatchairismadeofwood.那把椅子是用木頭做的。(從外表能看出是木頭)（2）bemadefrom意為“由……制成”，從制成品上看不出原材料。如：Thepaperismadefromwood.紙是由木頭做的。(從外表看不出木頭)辨析（3）bemadein意為“在某地制成”，in后面接地點。如：ThiswatchismadeinChina.這只手表在中國制造。（4）bemadeby

意為“通過什么方式或者由某人制成”。如：Thecoatismadebyhand.衣服是手工做的。Exercises1.Manystudentsusetheircomputers____gamesnow.A.play B.playingC.toplay D.played2.—Ilikelisteningtomusicverymuch.—______.A.SodoI B.SoIdoC.SoamI D.SoIamI.單項選擇。CA3.Halfofthemilkinthisstore______fromShandong.A.comes B.comeC.havecome D.arecoming4.HowcanIdomyhomework?Idon'tevenhaveapen______.A.tomake B.tomakeinC.towrite D.towritewithAD1.TheZhaozhouBridgeismade___stone.2.Whatdidyoucometoschool______?3.Peoplecangetnews______manyways.4.Allthelivingthingscan'tlive________air.5.Wecanmakethismedicine_____plants.II.用適當的介詞填空。offorinwithoutfrom1.from,food,plants,comes,our,most,of__________________________________.2.medicine,sick,doctors,help,to,people,use__________________________________.3.a,made,you,straw,do,hat,of,have__________________________________?4.different,are,many,there,world,plants,in,eat,the,people,that,can__________________________________.III.連詞成句。MostofourfoodcomesfromplantsDoctorsusemedicinetohelpsickpeopleDoyouhaveahatmadeofst