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v(1)投，擲，拋(throw)[T+n，T+n+prep，T+n+adv]：～a net into the sea/a fishing line into the water/a letter into the fire/a stone against the window 把網(wǎng)撒入大海/釣魚線拋入水中/信扔進火中/石頭投向窗戶;〖同〗throw，toss;

(2)脫落(get rid of;lose)[T+n，T+n+adv(off)]：The horse～a shoe.馬掉了一個鐵掌。Snakes～(off) their skins every year.蛇每年蛻皮。

(3)投向(turn or direct (sth) in a particular direction)[T+n，T+n+prep]：The lamp～long shadows across the garden/a warm glow on the table/a soft light on the walls.燈把長長的影子投向花園/溫暖的紅光投到桌子上/柔和的光投到四面墻上。The tree～a shadow on the grass.樹在草地上投下影子?！玸b a look of hatred仇恨地看某人一眼;～a glance (of surprise) at sb/one's eyes in sb's direction/an eye down the page(驚訝地)瞥某人一眼/把目光投向某人的方向/朝下看一眼書;(event)～a shadow on sb's life(事件)給某人的生活投下陰影;(fact)～a new light on the matter(事實)進一步說明了此事;～doubts on (upon) sb's actions/reliability懷疑某人的行為/可靠性;～one's mind back to one's childhood/several years/over the day回顧童年/多年前的往事/前一天的事;〖同〗shed，direct，scatter;

(4)澆鑄((make a shape by pouring hot metal，clay，etc) into a mould)[T+n，I]：～bronze/iron/steel (into different shapes and sizes) 澆鑄(不同形狀和大小的)青銅/鐵/鋼件;Iron～s better than copper. 鐵比銅好澆鑄。Some metals ～easily.有的金屬容易澆鑄。

(5)鑄造(make (an object of metal，clay，etc in this way))[T+n，T+n+prep(in)]：～a statue (a sculpture) in bronze/in a mixture of copper and tin用青銅/銅錫合金鑄造一座雕像(雕塑);～a piston/a light concrete boat鑄造一個活塞/一艘輕型水泥船;〖同〗mould，form，shape;

(6)選配演員(choose actors to perform in(a play，film，etc))[I，T+n]：(producer/director)～(parts) for a new film(制片人/導演)為一部新電影選演員;～a play/a movie/a film選配一出戲/一部片子/一部電影的演員;

(7)派(人演)角色(give sb a part in a play，film，etc)[T+n，T+n+prep(in/as)]：～sb as Hamlet/in the role of Hamlet/for the part of Hamlet讓某人演哈姆雷特/演哈姆雷特的角色/演哈姆雷特的角色;～sb in the play 讓某人在那出戲中演個角色;〖同〗assign，appoint，choose;

cast about/around for (v adv prep) 設(shè)法搜尋(vt，無 pass)：～about (around) for an experienced teacher/an excuse/an opportunity/an explanation設(shè)法找一有經(jīng)驗的教師/一借口/一機會/一解釋;

cast aside (v adv) 拋棄 (vt)：～aside one's care/one's caution/one's inhibitions/one's wife/old habits/old friends/old clothes拋棄憂慮/謹小慎微/壓抑感/妻子/舊習慣/老朋友/舊衣服;

cast away (v adv)(因船失事)遺棄(vt，通常 pass)：be～away on an island被遺棄在一個島上;

cast down (v adv) 使沮喪(vt，通常 pass)：be (seem/feel)～down by the news/one's failure/one's dismissal(好像/覺得)被那消息/失敗/解雇搞得垂頭喪氣;

cast off (v adv)遺(拋)棄(vt)：～off one's previous business connections/one's former associates/one's old friends拋棄從前的生意關(guān)系戶/過去的伙伴/老朋友;

cast out (v adv) 趕走 (vt，通常 pass)：be～out of a temple/the best society被從寺廟/上層社會趕了出去;

n(1)投，擲，拋(act of throwing)[C]：lose all one's money on a single～of the dice一擲骰子輸?shù)羧垮X財;make a～with a fishing-line/a net 拋魚線/撒漁網(wǎng);The fisherman caught a big fish at the first～.漁夫頭一網(wǎng)就捕到了一條大魚?！纪絫hrow，toss;

(2) 1)鑄造件(object made by moulding)[C]：The doctor put a plaster～on her broken leg.大夫給她的斷腿打上了石膏。2)鑄模(special shape or mould into which hot metal is poured)[C]：The hot metal is poured into a～.熔化的金屬灌進了鑄模。

(3)類型，特性(general shape or quality)[U，a/the ～]：His face has a distinctly oriental～.他的臉是典型的東方人型的。be of (have) an inquiring/unusual～of mind有探究精神/心智非凡;be of(have)a strange～of mind心智奇特;the noble～of his head他那給人印象深刻的頭顱;This puts a different～on the matter.這使事情顯得不同了。〖同〗look，appearance;

(4)(全體)演員(complete set of actors in a play，movie，etc)[C，Gp]：There were only three people in the～.演員僅三個。The～of the play was given a standing ovation.人們起立給該劇的演員們鼓掌。Who was in the～? 演員中有誰?The whole～worked wonderfully together.全體演員配合得很好。a～list演員表;〖同〗actors，performers;

【辨異】 cast與throw和toss都表示把什么向空中投去。throw(投，擲，拋)是一般用語，常帶狀語表示方向和目的，如：throw a rope to sb(把繩子扔給某人);cast 是正式用語，現(xiàn)僅見于一些成語性用法中，如：cast a net(撒網(wǎng));toss(投，擲，拋)是(手在下或側(cè)面向上、下、前、后隨便地)輕輕地扔，如：toss a bone to a dog(扔給狗一塊骨頭)。