1
a sportscaster
表示职业身份时，常用不定冠词 a/an。
He is a sportscaster for a local TV station.
他是当地电视台的一名体育节目广播员。
体育节目广播员
先理解核心含义，再看它在真实句子里的用法。
体育节目广播员
an announcer who reads sports news or describes sporting events
He is a sportscaster for a local TV station.
他是当地电视台的一名体育节目广播员。
评论、主持和报道体育赛事的人。
A person who comments on, presents, and reports sport events.
The sportscaster announced the final score of the game.
体育节目播音员播报了比赛的最终比分。
After the match, the sportscaster interviewed the winning coach.
比赛结束后，体育播音员采访了获胜的教练。
Several sportscasters were talking about the team's chances in the playoffs.
几位体育节目解说员正在谈论这支球队在季后赛中的机会。
表示职业身份时，常用不定冠词 a/an。
He is a sportscaster for a local TV station.
他是当地电视台的一名体育节目广播员。
work as + 职业名词，表示“担任某职业”。
She works as a sportscaster during the football season.
她在足球赛季担任体育节目广播员。
He studied journalism and became a sportscaster.
他学了新闻学，成了一名体育节目广播员。
Not this
Two sportscaster are talking about the match.
Use this
Two sportscasters are talking about the match.
sportscaster 是可数名词，表示“体育节目广播员”。中文名词没有复数变化，但英语可数名词要用复数词尾 -s，所以主语为复数时须写成 sportscasters。
Not this
He is a famous sportscast for this team.
Use this
He is a famous sportscaster for this team.
sportscast 指“体育节目广播”本身，而 sportscaster 指“广播员”这类人，两者形近义不同。描述“他是广播员”要用表示人的 -er 名词 sportscaster，不能用 sportscast 指代人。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
资深体育解说员
The veteran sportscaster has covered the Olympics for twenty years.
这位资深体育解说员报道奥运会已有二十年。
实况体育解说员
He is the play-by-play sportscaster for the local basketball team.
他是当地篮球队的实况体育解说员。
电视体育解说员
The television sportscaster interviewed the winning coach after the game.
电视体育解说员在赛后采访了获胜教练。
电台体育解说员
The radio sportscaster described the final goal with excitement.
这位电台体育解说员兴奋地描述了最后的进球。
前体育解说员
The former sportscaster now writes a column about sports.
这位前体育解说员现在撰写体育专栏。
Use sportscaster naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
sports（体育）+ caster（广播员）→ 体育节目广播员；联想赛事直播中拿着话筒播报比分的主播。
语域：neutral 常见场景：体育节目播报、广播或电视解说 该词多用于日常描述体育节目播音员，属于中性常用词，在正式书面语和口语中都适用。
Caster, broadcaster, forecaster, newscaster, and podcaster match the ending of sportscaster in spelling and sound (/kɑːstə/), though sportscaster’s main stress is on sports-, so these are not exact rhymes. Disaster and plaster are lookalikes ending in -aster but are pronounced /dɪˈzɑːstə/ and /ˈplɑːstə/; they lack the /k/ and do not match the -caster sound.
Dictionary facts from ECDICT, WIKTIONARY.