✨ 语义深度解析 ⋮
broadcast
高考核心词 作文加分词 难度 1/5 ⏱ 2 分钟
核心
广播；播出——通过无线电或电视向公众传播信息或节目
释义
1
n.广播；播出的节目
The president's address was a live broadcast watched by an estimated audience of over two hundred million people.
总统的讲话是一次现场直播，估计有超过两亿人收看。
2
v.广播；播出（节目/信息）
The charity concert was broadcast simultaneously across thirty countries, raising awareness of global food insecurity.
这场慈善音乐会在三十个国家同步播出，提高了公众对全球粮食不安全问题的意识。
语感
broadcast（过去式也是 broadcast，× broadcasted）；live broadcast（现场直播）；broadcaster（广播员/机构）
广播，播出的节目（名词）广播，播出（动词）
陷阱
⚠️broadcast 过去式/过去分词是 broadcast（× broadcasted）
✗
The emergency warning was broadcasted to all mobile phones in the affected region within minutes of the earthquake.
紧急警告在地震发生后几分钟内播送至受影响地区的所有手机。（× was broadcasted → ✓ was broadcast）
broadcast 是不规则动词，过去式和过去分词均为 broadcast（无需加 -ed）；× was broadcasted → ✓ was broadcast；类似不规则动词：forecast → forecast / forecasted（两者均可，但 forecast 更正式）
✓
The emergency warning was broadcast to all mobile phones in the affected region within minutes of the earthquake.
紧急警告在地震发生后几分钟内播送至受影响地区的所有手机。
⚠️broadcast（通过媒体广播）vs. stream（网络流媒体）
The film was first broadcast on national television before being made available to stream on the studio's online platform.
✗
broadcast = stream（广播 = 流媒体，完全一样）
✓
broadcast（通过传统广播电视播出）和 stream（通过网络实时传输/点播）是不同的媒体形式；broadcast = 电视/广播播出（需要在特定时间收看）；stream = 在线流媒体（随时点播：stream on Netflix）；此句先电视播出后网络流媒体，两个词用法正确
这部电影先在国家电视台播出，随后在制片公司的网络平台上提供流媒体观看。（broadcast = 传统电视播出；stream = 网络流媒体，两词不同）
近义辨析
broadcast vs transmit
broadcast broadcast（广播，通过媒体向公众传播：broadcast a programme = 播出节目） transmit transmit（传输，技术性用词，强调信号/数据的传递：transmit a signal = 传输信号；transmit information = 传递信息；不强调「向公众」）
The ceremony was broadcast live to audiences in over fifty countries via satellite television.
仪式通过卫星电视向五十多个国家的观众进行了现场直播。
The antenna was used to transmit the radio signal over a distance of more than three hundred kilometres.
天线被用来将无线电信号传输超过三百公里的距离。
写作加分
✨ 加分词
替换：shown on TVairedput on the radio
媒体与传播话题科技话题政治与民主话题
普通
The debate was shown on TV for people all over the country to watch.
辩论在电视上播出，全国各地的人都可以观看。
加分 ✨
The televised debate was broadcast live to a national audience of over fifteen million, with many viewers following the discussion simultaneously on social media.
这场电视辩论向超过一千五百万的全国观众进行了现场直播，许多观众同时在社交媒体上跟进讨论。
常用搭配
live broadcast现场直播
broadcast live进行现场直播（副词 live）
radio / TV broadcast广播 / 电视节目
public broadcaster公共广播机构
broadcast a warning / message广播警告 / 信息
词根
broadcast = broad（广泛）+ cast（投掷）→ 「广泛投掷」信号 = 广播；过去式也是 broadcast（不加 -ed），因为是不规则动词
考考你
Q1对错判断
判断下面句子里的用法是否正确：
The prime minister's speech was broadcasted on all major television channels simultaneously during the national emergency.
✓ 正确版本
The prime minister's speech was broadcast on all major television channels simultaneously during the national emergency.
在全国紧急状态期间，首相的演讲同时在所有主要电视频道上播出。
broadcast 是不规则动词，过去式/过去分词均为 broadcast；× was broadcasted → ✓ was broadcast
Q2近义选词
选择最恰当的词填空：
The satellite tower is capable of ___ a signal across the entire continent without any loss of quality.
Abroadcasting
Btransmitting
✓ 卫星塔能够在整个大陆传输信号而不损失任何质量。
transmitting a signal（传输信号）是技术性表达，强调信号的点对点传递；broadcasting 强调向广泛公众播出，用于媒体内容；signal across a continent 是技术传输语境，transmit 更准确
Q3搭配还原
选择正确的词，完成句子：
The award ceremony was ___ live on national television, attracting the largest audience in the channel's history.
颁奖典礼在国家电视台进行了现场直播，吸引了该频道历史上最大的观众群。
Abroadcast
Btransmitted
Cstreamed
Daired
完整搭配：broadcast live　现场直播（broadcast + live 副词）
broadcast live on national television（在国家电视台现场直播）是标准表达；aired live 也可（air = 播出，口语）；transmitted 更技术性；streamed 特指网络流媒体；broadcast live 是最书面正式的表达
接着学
点击进入该词的深度解析
stream近义流媒体（stream online = 在线流媒体；与 broadcast 都是传播方式，但 stream 是网络点播）
air近义播出（the show airs on Monday = 节目周一播出；比 broadcast 更口语，用于电视/广播）
censor近义审查（censor a broadcast = 审查广播内容；与 broadcast 在媒体管制语境中配对）
audience近义受众（broadcast audience = 广播观众；broadcast 的接收方）