必修一单词和知识点

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1、1.substance2.mixture3.oxygen4.electricity5.stage6.conclusion7.aim8.reaction9.electrical10.equipment11.react12.potassium13.sodium14.calcium15.magnesium16.aluminiumn.物质n.混合物n.氧气n.电n.阶段；时期n.结论n.目标；目的n.反应adj.与电有关的；用电的n.设备；装备vi.（化学）反应n.钾n.钠n.钙n.镁n.铝17.liqu

2、id18.expand19.Contractn.液体vi.膨胀vi.收缩20.zinc21.partial22.copper23.oxide24.rust25.boil26.ordinary27.steam28.float29.form30.dissolve31.balance32.crucible33.tongs；n.锌adj.部分的；局部的n.铜n.氧化物vi.生锈vt.煮；煮沸adj.普通的；平常的n.蒸汽；水气vi.漂浮vi.形成vi.溶解；分解；分离n.天平n.坩埚n.夹子；小钳子34.

3、flame35.facility36.lecture37.department38.AstonishedAdd…to…UsedtoIntheareaofBeproudofBesupposedton.火焰n.(常作复数)设备；工具n.演讲n.（大学的）科、系adj.吃惊的；惊愕的往…加入…过去（常常）在…领域为…感到骄傲/自豪应当；理应1．expandv.膨胀；扩大；扩展expandinto　　　　扩展成expandsth.扩大，扩展某物expandon/upon详述，进一步说明anexpansio

4、nofsth.……的扩大/膨胀，……的详述/展开1.Perhapsthebestreasonforexploringspaceisthisgenetictendencytoexpandwhereverpossible.2.Paynelaterexpandedonhisinitialstatement，sayinghehadn'tmeantitthewayitsounded.3.Thisnovelisanexpansionofashortstoryhewroteaboutfortyyearsago.

5、类词辨析expand扩大，扩张。不仅指尺寸的增加，还可指范围和体积的扩大。extend伸出，延伸。指空间范围的扩大以及长度、宽度的朝外延伸，也可指时间的延长stretch伸开，拉长，变松。一般指由曲变直、由短变长的伸展，而不是加长。强调形状的变化A．用expand，extend，stretch填空①Thehotweather_____toOctober.②He____himselfoutonthebeach,bathinginthesun.③Water__________asitfreezes.B

6、．单项填空④Whynottryto__________yourstoryintoanovel?A．expendB．expandC．expenseD．expect2．conclusionn．结论，结束，结局(1)cometo/arriveat/draw/reachaconclusion得出结论jumptoconclusions匆忙下结论inconclusion总之(2)concludev.得出结论；结束；缔结(条约)①Theydrewdifferentconclusionsfromthefacts.

7、②Inconclusion，I'dliketosayhowmuchIhaveenjoyedmyselftoday.①Weshouldn't_____aboutthecauseoftheproblem.对这个问题的原因我们不应该匆忙下结论。②Wediscussedtheproblemmanytimes，butstillcouldcometono__________.A．endB．conclusionC．resultD．judgement3．aimn．目标；目的vt.瞄准；针对；旨在；打算achiev

8、eone'saim　　达到目标takeaimatsth.瞄准……；对准……withtheaimof...目的是……aimat/beaimedat(doing)sth.瞄准；目标在于……aimtodosth./beaimedtodosth.旨在做某事①ShewenttoLondonwiththeaimoffindingajob.②Hestudiedhard，aimingatpassingtheentranceexam.＝Hestudiedhard，aimingtopasstheent