1
have a viva
在英国大学里，viva 常指学位论文口试或答辩。
After submitting the thesis, she had a viva with two examiners.
提交论文后，她参加了一场由两位考官主持的口试。
口试
vivas — plural of viva
先理解核心含义，再看它在真实句子里的用法。
口试
an examination conducted by spoken communication
After submitting the thesis, she had a viva with two examiners.
提交论文后，她参加了一场由两位考官主持的口试。
欢呼声,喝彩声。
A shout of applause.
口试,通常指学术资格的口头考试。
An oral examination, typically for an academic qualification.
I have my viva tomorrow morning, and I'm quite nervous.
我明天早上有口试，我相当紧张。
After months of preparation, she passed her viva with flying colours.
经过几个月的准备，她以优异成绩通过了口试。
During the viva, the examiners asked questions about my research project.
在口试期间，考官问了我关于研究项目的问题。
在英国大学里，viva 常指学位论文口试或答辩。
After submitting the thesis, she had a viva with two examiners.
提交论文后，她参加了一场由两位考官主持的口试。
未通过可以说 fail one's viva。
He was relieved to pass his viva on the first attempt.
他第一次就通过了口试，松了一口气。
She spent a whole week preparing for the viva.
她花了整整一周时间为口试做准备。
Not this
I have viva at 10.
Use this
I have a viva at 10.
viva 是可数名词，表示一次具体的口试，前面需要不定冠词 a；中文没有冠词规则，容易遗漏。
Not this
I will join the viva tomorrow.
Use this
I will take the viva tomorrow.
参加考试（口试）在英语中用 take/have，不能用 join；join 一般表示加入组织或人群，这里受中文“参加”的直译影响。
Not this
I need to prepare for the viva exam.
Use this
I need to prepare for the viva.
viva 本身即“口试”，后面再加 exam 属于语义重复；直接使用 viva 即可。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
参加口试
All doctoral students have to sit a viva after submitting their thesis.
所有博士生在提交论文后都必须参加口试。
通过口试
He was relieved to pass his viva on the first attempt.
他第一次就通过了口试，感到如释重负。
论文答辩
Her thesis viva is scheduled for next Monday.
她的论文答辩安排在周一。
口试考官
The viva examiners asked several challenging questions.
口试考官问了好几个有挑战性的问题。
口试；口头进行的考试
She passed her viva voce with distinction.
她以优异的成绩通过了口试。
Use vivas naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
viva 发音类似‘维娃’：想象一个娃娃开口答题——口试就是靠嘴说，不靠笔写。
语域：formal 常见场景：academic、university 通常用于正式学术场合，多指大学里的口头答辩或考试。
真正与 viva /ˈviːvə/ 押韵的是 diva /ˈdiːvə/（重读元音和后面的 /və/ 都相同）。lava、nova 拼写也以 -va 结尾，但重读元音不同（/ɑː/、/oʊ/），发音并不押韵。visa 以 vi- 开头，第一个音节 /viː/ 相同，但后面的辅音是 /z/ 而不是 /v/，注意辨别。
Dictionary facts from ECDICT, WIKTIONARY.