1
a newscast about [topic]
newscast 是可数名词，常用 a newscast about... 表示“关于……的新闻广播”。
I watched a newscast about the weather.
我看了一个关于天气的新闻广播。
新闻广播
newscasts — plural of newscast
先理解核心含义，再看它在真实句子里的用法。
新闻广播
a broadcast of news or commentary on the news
I watched a newscast about the weather.
我看了一个关于天气的新闻广播。
新闻广播；通过电视、电台等播出的新闻报道。
A broadcast of the news; a news report that is transmitted over the air for television, radio, etc.
I watched the evening newscast to find out about the storm.
我看了晚间新闻广播，想了解风暴的情况。
The local newscast covered the opening of the new library.
当地新闻广播报道了新图书馆的开幕。
She listens to the morning newscast while drinking coffee.
她一边喝咖啡一边听早间新闻广播。
newscast 是可数名词，常用 a newscast about... 表示“关于……的新闻广播”。
I watched a newscast about the weather.
我看了一个关于天气的新闻广播。
用 the + 时间 + newscast 来特指某时间段的新闻广播。
The evening newscast starts at six.
晚间新闻广播六点开始。
表示在某新闻广播中播出或提到，介词用 on。
The announcement was made on the newscast.
这一声明是在新闻广播中宣布的。
Not this
I listened to newscast last night.
Use this
I listened to a newscast last night.
newscast 是可数名词，单数形式前需要有冠词 a/an，不能直接裸用。
Not this
I watched three news this morning.
Use this
I watched three newscasts this morning.
news 是不可数名词，不能直接用数词修饰；要表示“几则新闻广播”应用可数名词 newscast 的复数形式。
Not this
The station aired two newscast in one hour.
Use this
The station aired two newscasts in one hour.
newscast 是可数名词，复数概念下词尾必须加 -s，不能像汉语名词那样不改变形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
本地新闻广播
She watches the local newscast every morning.
她每天早上看本地新闻广播。
晚间新闻广播
The evening newscast starts at six o'clock.
晚间新闻广播六点开始。
现场直播的新闻广播
The station aired a live newscast from the scene.
该电视台播出了来自现场的新闻直播。
电视新闻广播
He prefers television newscasts to newspaper articles.
比起报纸文章，他更喜欢电视新闻广播。
新闻广播主持人
The newscast anchor introduced the report.
新闻广播主持人介绍了这篇报道。
Use newscasts naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 news（新闻）和 broadcast（广播）拼在一起就是新闻广播，像电视里准点开播的新闻节目。
语域：neutral 常见场景：电视新闻节目、广播新闻、媒体行业 “newscast” 是名词，指广播或电视的新闻节目，语气中性；在媒体讨论和日常口语中比较常见，正式写作中也可使用，但有时会换用 news broadcast。
All six words share the spelling chunk cast and, in British pronunciation, end with the same /kɑːst/ sound as newscast (AmE: /kæst/). They are not strict rhymes with newscast because the primary stress falls on the first syllable, but the final sounds match. Lookalike warning: castle /ˈkɑːsəl/ and castanets /ˌkæstəˈnɛts/ have different sounds despite the cast spelling.
Dictionary facts from ECDICT, WIKTIONARY.