最新学术英语（一unit 1 重点词汇课件ppt.ppt

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1、学术英语（一）unit1重点词汇Discussthewords’meaningwidespread:____________________________________________________________________Malnutritionintheregioniswidespread—affectingupto70%ofchildrenunder5yearsold.existingorhappeninginmanyplacesoramongmanypeopleReadthesentencesbelowanduse

2、contexttowritethedefinitionsoftheunderlinedwords.Onewordhasbeendoneforyou.e.g.withhold:_______________________________Duringthetrial,theprosecutionwasaccusedofwithholdingcrucialevidencefromthedefense.holdback;refusetohandoverorgiveIfyouwithholdsomethingthatsomeonewants,

3、youdonotletthemhaveit.e.g.Thewithholdingofpropertyfromthemarketmaycausepricestobehigherthannormal.(捂盘可能导致房价过高。)Policewithheldthedeadboy'snameyesterdayuntilrelativescouldbetold.(警方昨天拒绝在通知亲属前透露死亡男孩的姓名。)Discussthewords’meaningprevalence:____________________________________

4、___________________________________________________Theprevalenceofdrugsinthecityisalarming,whichhasledtodiseaseandpoverty.thequalityofexistingverycommonlyorhappeningfrequentlyDiscussthewords’meaning流行；盛行；普遍；（疾病等的）流行程度e.g.TheywereverysurprisedbytheprevalenceofasthmainBri

5、tainandwesternEurope.(他们对英国和西欧哮喘的流行感到很吃惊。)prevalentadj.Smokingisbecomingincreasinglyprevalentamongyoungerwomen.(抽烟在年轻女性中变得越来越常见。)submit:____________________________________TheysubmittedtheirreportstotheChancelloryesterdaybutgotnoreplyyet.handoverformallyDiscussthewords’

6、meaningIfyousubmitaproposal,report,orrequesttosomeone,youformallysendittothemsothattheycanconsideritordecideaboutit.e.g.Theysubmittedtheirreportstothepresidentyesterday.(他们昨天向总统递交了报告。)Theemployeesyesterdaysubmittedaclaimfora9percentpayrise.（雇员们昨天提交了一份要求加薪9%的声明。）6.ensure

7、:____________________________________Pleaseensurethatallthelightsareswitchedoffatnight.makesure,guarantee;makecertainDiscussthewords’meaningToensuresomething,ortoensurethatsomethinghappens,meanstomakecertainthatithappens.保证;确保;担保e.g.Beforetraveling,wemustensuretheavaila

8、bilityoffoodandwater.(旅行前，我们必须确保能够买到食物和水。)Wemustensureourchildrenagainstcontaminationbybadideas.（我们必须保护我们的儿童不受