新人教版八年级下册Unit3-SectionB-2b知识点

1.Idon’tunderstandwhysomeparentsmaketheirkidshelpwithhouseworkandchoresathome.我不理解为什么有些父母在家让孩子们帮忙做家务和杂务。【解析】makesb.dosth让某人做某事make→made→madev.做，制作，使得(1)makesb/sth+形容词“让某人或某物…”makeyouhappy(2)makesb/sthdosth使某人做某事makemelaugh.Colorscanchangeourmoodsandmakeus_feel__happyorsad,energeticorsleep.2.Theydon’thavetimetostudyanddohousework，too.他们也没有时间来学习家务和做家务。【解析】havetimetodosth.有时间做某事havetime=befree有空3.Houseworkisawasteoftheirtime.做家务是在浪费他们的时间。【解析】awasteof浪费awasteoftime浪费时间awasteofmoney浪费金钱wastev“浪费”wastetime/moneyonsthwastetime/money(in)doingsth在做某事上花费时间/金钱Don’twastewater.Can’tyouseethesign“savewater”?4.Theyshouldspendtheirtimeonschoolworkinordertogetgoodgradesandgetintoagooduniversity.为了取得好成绩并考上一所好大学，他们应该把时间用在学习上。【解析1】spend...onsth在某事上花费......spend/pay/cost/take花费(1)spend→spent→spentv花费,主语是人◆sb.+spend+时间/钱+onsth◆sb.+spend+时间/钱+（in）doingsth◆spendon=payfor支付Hespendstoomuchtimeonthecomputergames.Myfatherspentonehundredthousandyuanonhisnewcar.(2)pay→paid→paidv支付，主语是人◆sb.+pay+钱+forsthIpay10yuanforthebook.—Howmuchdidyoupayforthiscomputer?—Fivehundreddollars.(3)cost→cost→costv花费，主语是某物或某事◆sthcostsb.+钱某物花费某人多少钱Anewcomputercostsmealotofmoney.Iboughtanewsweaterlastweekend.Itcostme120yuan.(4)take→took→takenv花费◆Ittakes/tooksb.sometimetodosth.做某事花费某人多长时间Ittakeshim3hourstodohishomework.【解析2】inorderto“目的是；为了”后接动词原形。inordertodosth为了做某事Heranquicklyinordernottobelateforthemeeting.【解析3】getinto=enter进入【拓展】与get相关的短语：getup起床getback返回getover克服getdressed穿衣getinto进入get/belost丢失getoff/on下/上车getonwellwithsb.与某人相处得好getoutof从…出来getwarm变暧getreadyfor+n.为…做准备getreadytodosth.准备做某事getwell康复getachance有机会、得到机会get/gotosleep(fallasleep)入睡相关：(beasleep睡着)5.Also,whentheygetolder,theywillhavetodohousrworksothere’snoneedforthemtodoitnow.而且，当他们长大的时候，他们也将会做家务，因此，他们没必要现在在做。【解析】getolder长大There'snoneedforsb.todosth.对某人来说做某事没有必要e.g.Thereisnoneedforustogetupearlytomorrow,becauseit'sSunday.6.Itistheparents’jobtoprovideacleanandcomfortableenvironmentathomefortheirchildren.在家为孩子们提供一个干净、舒适的环境是父母的义务。【解析】providesth.forsb.为某人提供某物providev.提供providesb.withsth.(sb.前介词用for)=providesth.forsb.(sth.前需加介词with)供应某人某物e.g.Theyprovideuswithenoughfood.=Theyprovideenoughfoodforus.Theschoolprovidesthestudents_____deliciousfoodeveryday.for7.Andanyway,Ithinkdoingchoresisnotsodifficult.无论如何，我认为做家务并不那么难。【解析】anyway无论如何,(一般放在句首，用逗号和句子隔开）8.Childrenthesedaysdependontheirparentstoomuch.解析：dependon...依靠；依赖；信赖；由...而决定其后可跟n./代词/动名词以及宾语从句Youareadultsnowandshouldnotdependonyourparents.9.Ithinkitisimportantforchildrentolearnhowtodochoresandhelptheirparentswithhousework.我认为对孩子们来说，学习如何做杂务并帮助他们的父母做家务是很重要的。【解析】Itisimportantforsb.todosth.对某人来说做某事是重要的10.Doingchoreshelpstodevelopchildren’sindependenceandteachesthemhowtolookafterthemselves.做杂务不仅可以培养孩子们的独立性还可以教他们如何照顾自己。【解析】developindependence培养独立意识developv→developmentn发展→developingadj.发展的→developedadj.发达的adevelopingcountry一个发展中国家adevelopedcountry一个发达国家Chinaisadevelopingcountry.11.Sincetheyliveinonehousewiththeirparents,theyshouldknowthateveryoneshoulddotheirpartinkeepingitcleanandtidy.既然他们和父母同住在一个房子里，他们应该知道保持家里干净、整洁每个人都应该参与。【解析】sinceconj.既然(表示对方已知的事实或理由，常放在句首）12.Ourneighbor’ssongotintoagoodcollegebutduringhisfirstyear,hehadnideahowtotakecareofhimself.我们邻居的儿子上一所好大学，但是在第一年的时候，他还不知道如何照顾自己。13.Asaresult,heoftenfellillandhisgradesdropped.结果，他常常生病，功课也落下了。【解析1】asaresult结果（插入语，放在句首，用逗号隔开）Don’taskhimtoolateintothenight,__Asaresult___,heisonlyasmallchild.【解析2】fallill生病fallasleep入睡14.Asaresult,heoftenfellillandhisgradesdropped.结果，他常常生病，功课也落下了。【解析1】asaresult结果（插入语，放在句首，用逗号隔开）Don’taskhimtoolateintothenight,__Asaresult___,heisonlyasmallchild.【解析2】fallill生病fallasleep入睡35.Theearlierkidslearntobeindependent,thebetteritisfortheirfuture.孩子们越早学会独立，对他们的未来越好。【解析】the+比较级，the+比较级“越......越......”Themoreyousmile,the___happier____youwillfeel.