选必修二Unit1-Science+and+Scientists词汇知识点高中英语(2019).pptx

选择性必修第二册UNIT1ScienceandScientists单词知识点讲解

severedisease/painsevereweather/winterfaceseverechallenges任何人违反法律都将被严惩。(主语从句)Whoeverbreaksthelawwillbeseverelypunished.1.severeadj.极为恶劣的;十分严重的;严厉的

2.frustratedadj.懊恼的；沮丧的；失意的frustratingadj.令人沮丧的frustrationn.沮丧，懊恼feelfrustrated感到沮丧Hebecamefrustratedbecausenooneknewhowtopreventortreatcholera.同义词：discouraged/depressed/disappointed

3.onceandforall①最终地finallyultimatelyeventually②彻底地completelyentirelyabsolutelytotallythoroughlyWehavetotacklethedifficultproblemonceandforall.

4.contradictoryadj.相互矛盾的;对立的;不一致的becontradictoryto…与……矛盾、相反Hisremarkwascontradictorytothetruth.contradictorymessages/statementscontradictv.相抵触，与..矛盾contradicteachother互相矛盾contradictsb反驳某人contradictoneself自相矛盾contradictionn.矛盾

5.infection n.感染;传染infectsb.withsth.使某人感染上.../把...传染sb./sth.beinfectedwithsth.某人感染/传染上…Goaway,Idontwanttoinfectyouwithmycold.Manypeopleareinfectedwiththevirus.Thecomputeris(infect)withavirus.infected

6.subscribevi.认购（股份）；定期订购；subscribeto订阅（报纸、杂志等）同意；向……捐赠subscriptionn.订阅Whichjournalsdoesthelibrarysubscribeto?Personally,I’veneversubscribedtotheviewthateithersexissuperiortotheother.

7.proofn.证据;证明=evidencee.g.Snowsubsribedtothesecondtheory.Itwascorrect,buthestillneededproof.provev.证明-proof作为后缀防...的；抗...的rainproof防水的；防雨的；n.雨衣windproof防风的

8.multipleadj.数量多的;多种多样的multiplyv.乘；繁殖Ifyoumultiply6by9,youllget54.multi-前缀“多种”multimediamultifunctionalmulticultural