高中英語詞根詞綴 前綴 de di 課件

de-di-de-di-1de-

①除去dehairdefogdefrostdehumanizedecodedegreasede-①除去dehair2de-

②往下depressdeposedescenddecreasedeclinedevaluedepreciatedemotedeterioratedetainderidededucedepositdejectde-②往下depressdetain3depress

depresssb.Therainydaysalwaysdepressme.Thelittlegirldepressedthebutton.按下Thedroughtdepressedthewaterlevelinthereservoirs.使降低depresseddepressingdepressivedepressiondepressdepresssb.Therainy4depose

pose:擺放，位置

v.罷黜；罷免

deposesb.

Theheadofstatewasdeposedbythearmy.deposepose:擺放，位置v.罷黜；罷免de5descend

scend:攀爬（向下攀爬）：vi.下降；遺傳

SoIcandescendtoconsiderabledepths.所以我可以下降至海底很深的地方。Heisdescendedfromanhonorablefamily.他是名門望族的后裔。descendant后裔

descendscend:攀爬（向下攀爬）：vi.下降6decline

cline:傾斜（向下傾斜）：v.下滑；下降；謝絕（邀請等）

Ideclinedwithmuchregretyourkindinvitation.很遺憾,我不能接受您的盛情邀請。Thedeclineofsalesembarrassedthecompany.銷路下降使公司陷于財政困難。declinecline:傾斜（向下傾斜）：v.下滑；7devalue

precious/valuablev.（使）貶值

Wesaythatthedollarhasdepreciated.Thevalueofforeigndiplomahasdepreciated.appreciate

depreciate

（使）增值；欣賞（認(rèn)識到......的價值）；感激（不加人）；理解，認(rèn)識到devalueprecious/valuablev.8Goldhasrecentlyappreciatedandwillcontinuetoappreciateinthemonthsahead.Sheshowedanappreciationofmyhelp.Shehadnoappreciationofthedifficultieswewerefacing.Thereisagrowingappreciationoftheneedforchange.Goldhasrecentlyappreciated9demotemote(motion):移動（向下移動）：vt.使降級

反義詞？promotedemotemote(motion):移動（向下移動）10deteriorateteriorterrorterrible恐怖；恐懼vi.惡化Hishealthhaddeterioratedwhilehewasinprison.Mentalandphysicaldeteriorationbothoccurnaturallywithage.隨著年齡的增長，心智和體力自然衰退。deteriorateteriorterrorterribl11detaintain:拿（向下拿下）：vt.扣押；拘壓阻止；耽擱

Thebadweatherdetainedusforseveralhours.Threemenweredetainedassuspects.detaintain:拿（向下拿下）：vt.扣押；拘12derideride:騎deridesb.（把某人騎在自己的下面）：vt.嘲笑；嘲弄SYN:mockderideride:騎deridesb.（把某人騎13deduceduce,duct:管道；疏導(dǎo)（向下疏導(dǎo)）：vt.推斷；推理Themethodwasdeducedfromexperiments.這個方法是經(jīng)過實驗推論出來的。deduceduce,duct:管道；疏導(dǎo)（向下疏導(dǎo)）14deposit（向下放置它）：n.沉淀物；積蓄；定金deposit（向下放置它）：n.沉淀物；積蓄；定金15dejectject：仍；投；擲；拋vt.使沮喪dejectject：仍；投；擲；拋vt.使沮喪16de-

③表否定defacedeformdestructivedenationalizedeclaimdevastatedehiredefusedecomposedetachdeportdegeneratedemeritde-③表否定defacedefuse17defacevt.損傷外觀，丑化defaceadeskbymarkingonitdefacevt.損傷外觀，丑化defaceadesk18deformvt.使成畸形；使變形Adeformedbodymayhaveabeautifulsoul.身體雖殘缺,心靈可美好。deformvt.使成畸形；使變形Adeformedb19destructiveadj.破壞性的,毀滅性的Policiesthataredestructivetoeconomicdevelopmentshouldbeabandoned.destructiveadj.破壞性的,毀滅性的Poli20declaimclaim：聲稱；宣稱vt.譴責(zé)；言辭攻擊Shewasdeclaimingagainstthewasteofthetaxpayers’money.declaimclaim：聲稱；宣稱vt.譴責(zé)；言辭攻擊S21devastatevast：遼闊的vt.毀壞；破壞SYN:destroy,ruindevastatevast：遼闊的vt.毀壞；破壞SYN:22dehirehire：雇傭vt.解雇dehirehire：雇傭vt.解雇23defusefuse：(詞根):注入（名詞）：導(dǎo)火索vt.拆除導(dǎo)火索；平息怒火，使平息，鎮(zhèn)靜Thebombblewupasexpertstriedtodefuseit.Thetwogroupswillmeetnextweektotrytodefusethecrisis.defusefuse：(詞根):注入vt.拆除導(dǎo)火索；24decomposevt.&vi.(使某物)變壞,腐爛Mostanimalsdecomposeveryquicklyafterdeath.Theeggsbegantodecomposeafteradayinthesun.decomposevt.&vi.(使某物)變壞,腐爛25detachattach:系上；貼上；附屬Thehospitalisattachedtothatuniversity.vt.分離；派遣Menweredetachedtodefendthepass.已經(jīng)派遣了人員去防守關(guān)隘。Thehandleisdetachablefromthebag.手柄可以從包上取下來。detachattach:系上；貼上；附屬Thehosp26deportvt.驅(qū)逐出境degeneratevt.墮落deportvt.驅(qū)逐出境degeneratevt.墮落27di-

double;twice雙dioxidedilemmadiplomadi-double;twice雙dioxide28dioxideoxygen:氧二氧化物carbondioxidedioxideoxygen:氧二氧化物carbondi29dilemma“喇嘛”n.進(jìn)退兩難，左右為難,窘境Hewasthrownintoadilemma.dilemma“喇嘛”n.進(jìn)退兩難，左右為難,窘境He30diplomaDiplomaswereconferredonmembersofthegraduatingclass.n.文憑diplomaDiplomaswereconferred31ThanksThanks32de-di-de-di-33de-

①除去dehairdefogdefrostdehumanizedecodedegreasede-①除去dehair34de-

②往下depressdeposedescenddecreasedeclinedevaluedepreciatedemotedeterioratedetainderidededucedepositdejectde-②往下depressdetain35depress

depresssb.Therainydaysalwaysdepressme.Thelittlegirldepressedthebutton.按下Thedroughtdepressedthewaterlevelinthereservoirs.使降低depresseddepressingdepressivedepressiondepressdepresssb.Therainy36depose

pose:擺放，位置

v.罷黜；罷免

deposesb.

Theheadofstatewasdeposedbythearmy.deposepose:擺放，位置v.罷黜；罷免de37descend

scend:攀爬（向下攀爬）：vi.下降；遺傳

SoIcandescendtoconsiderabledepths.所以我可以下降至海底很深的地方。Heisdescendedfromanhonorablefamily.他是名門望族的后裔。descendant后裔

descendscend:攀爬（向下攀爬）：vi.下降38decline

cline:傾斜（向下傾斜）：v.下滑；下降；謝絕（邀請等）

Ideclinedwithmuchregretyourkindinvitation.很遺憾,我不能接受您的盛情邀請。Thedeclineofsalesembarrassedthecompany.銷路下降使公司陷于財政困難。declinecline:傾斜（向下傾斜）：v.下滑；39devalue

precious/valuablev.（使）貶值

Wesaythatthedollarhasdepreciated.Thevalueofforeigndiplomahasdepreciated.appreciate

depreciate

（使）增值；欣賞（認(rèn)識到......的價值）；感激（不加人）；理解，認(rèn)識到devalueprecious/valuablev.40Goldhasrecentlyappreciatedandwillcontinuetoappreciateinthemonthsahead.Sheshowedanappreciationofmyhelp.Shehadnoappreciationofthedifficultieswewerefacing.Thereisagrowingappreciationoftheneedforchange.Goldhasrecentlyappreciated41demotemote(motion):移動（向下移動）：vt.使降級

反義詞？promotedemotemote(motion):移動（向下移動）42deteriorateteriorterrorterrible恐怖；恐懼vi.惡化Hishealthhaddeterioratedwhilehewasinprison.Mentalandphysicaldeteriorationbothoccurnaturallywithage.隨著年齡的增長，心智和體力自然衰退。deteriorateteriorterrorterribl43detaintain:拿（向下拿下）：vt.扣押；拘壓阻止；耽擱

Thebadweatherdetainedusforseveralhours.Threemenweredetainedassuspects.detaintain:拿（向下拿下）：vt.扣押；拘44derideride:騎deridesb.（把某人騎在自己的下面）：vt.嘲笑；嘲弄SYN:mockderideride:騎deridesb.（把某人騎45deduceduce,duct:管道；疏導(dǎo)（向下疏導(dǎo)）：vt.推斷；推理Themethodwasdeducedfromexperiments.這個方法是經(jīng)過實驗推論出來的。deduceduce,duct:管道；疏導(dǎo)（向下疏導(dǎo)）46deposit（向下放置它）：n.沉淀物；積蓄；定金deposit（向下放置它）：n.沉淀物；積蓄；定金47dejectject：仍；投；擲；拋vt.使沮喪dejectject：仍；投；擲；拋vt.使沮喪48de-

③表否定defacedeformdestructivedenationalizedeclaimdevastatedehiredefusedecomposedetachdeportdegeneratedemeritde-③表否定defacedefuse49defacevt.損傷外觀，丑化defaceadeskbymarkingonitdefacevt.損傷外觀，丑化defaceadesk50deformvt.使成畸形；使變形Adeformedbodymayhaveabeautifulsoul.身體雖殘缺,心靈可美好。deformvt.使成畸形；使變形Adeformedb51destructiveadj.破壞性的,毀滅性的Policiesthataredestructivetoeconomicdevelopmentshouldbeabandoned.destructiveadj.破壞性的,毀滅性的Poli52declaimclaim：聲稱；宣稱vt.譴責(zé)；言辭攻擊Shewasdeclaimingagainstthewasteofthetaxpayers’money.declaimclaim：聲稱；宣稱vt.譴責(zé)；言辭攻擊S53devastatevast：遼闊的vt.毀壞；破壞SYN:destroy,ruindevastatevast：遼闊的vt.毀壞；破壞SYN:54dehirehire：雇傭vt.解雇dehirehire：雇傭vt.解雇55defusefuse：(詞根):注入（名詞）：導(dǎo)火索vt.拆除導(dǎo)火索；平息怒火，使平息，鎮(zhèn)靜Thebombblewupasexpertstriedtodefuseit.Thetwogroupswillmeetnextweektotrytodefusethecrisis.defusefuse：(詞根):注入vt.拆除