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1、高一英语外研版必修1Module5ALessoninaLab学案—X知识要点1.Whenweusemetal,itisimportanttoknowhowtheyreactwithdifferentsubstances,forexample,waterandoxygen.使用金属时,要了解金属和不同的物质怎样发生反应,例如水和氧气这一点很重要。react作不及物动词,“起化学反应reactwithsth.与某物起化学反应它还有“对某人或某物做出反应”Z意,常与介词to连用reacttosth./sb.2.Ther
2、eactionofmetalswiththesesubstancescanbeputinorder.(不同的)金属与这些物质的反应程度可以按顺序排列起来。inorder"按顺序、次序”,还有“适当的;能用的”意思,反义词组为outoforder例如Heputhisbusinessaffairsinorderbeforehewenttotravel.翻译:Theliftwasoutoforderandhewastrapped.翻译:3.数字表达法(1)1,000以上词的表达法:先从后向前数,每三位数加一个逗号,用这
3、个方法把数冃分作若干段,再一段段的念;第一个逗号前的数为thousand,第二million,第三billion.一般用作单数,若用复数形式,要用“复数形式+oPo例如:4,007fourthousandandseven54,256,000fifty-fourmilliontwohundredandfifty-sixthousand14,800,000,000hundredsofbooks好儿白本书thousandsofyoungpeople(2)分数词构成法:分数词有基数词和序数词构成,基数词代表分子,序数词代
4、表分母。分子是1时,分母用单数,分子不是1时,分母都用复数形式。例如:1/2one-second1/4one-fourth3/4three-fourths2/3two-thirds5/9five-ninths1/2,1/4,3/4还可表示为1X1/2oneandhalf7乂3/4sevenandthreequarters3乂2/5threeandtwo-fifths47乂3/84.Thesciencefacilitiesareverygood,withlaboratoriesthathaveallthelates
5、tequipment.这些科研设施非常好,实验室配有最新的设备。(1)facility常用作复数名词,表示为某种目的提供的设施(如房屋、设备、服务等)。例如:Thisisa5-starhotelwithgoodfacilities.翻译:也可用作单数,"设备;天赋;才能。”例:Shehasanamazingfacilityformaths.练习:Weneedtoconsiderwhatwewillbeusingforlanguagetraining.A.abilitiesB.applianceC.faciliti
6、esD.qualities(2)with在句中意为“带有,具有”,引导短语对句子作附加说明,thathaveallthelatestequipment是定语从句,修饰先行词laboratories□例:HeleftforBeijingwithasuitcasethatcontainedalotofmoney.翻译:5.TheNobelPrizeisthehighestscientificprizethereis,soweshouldbeveryproudofthat.诺贝尔奖是目前最高的科学奖,我们应该为此感到骄
7、傲。beproudof为…而自豪例如:Weareproudofourmotherland.翻译:pride是名词,词组有:have/take(a)pridein,beproudtodosth.例女口:Hetook(a)greatprideinbeingastudentofBeijingUniversity.Ifeelveryproudtobeapartoftheteam.二、语法要点形容词和副词的比较级关于形容词和副词的比较级的用法,应注意以下具体问题:1.表示比较的表达方式:(1)表示倍数的三种结构:A:...
8、timesas+形容词原级+as...B:...timesthe+性质名词(size,weight,height,length...)+of...C:...times+形容词比较级+than...例如:Thistableis3timesasbigasthatone.Thistableis3timesthesizeofthatone.Thistableis3timesbig