yàobúshì miànshìguān gàosu wǒ, wǒ hái bù zhīdào yǒu shìyòngqī.

In this sentence, 要不是 is a fixed expression meaning if it were not for..., but for..., or if ... hadn’t happened.

So:

要不是面试官告诉我，我还不知道有试用期。
= If the interviewer hadn’t told me, I still wouldn’t know there is a probation period.

Here, 要 does not mean want. Once it becomes part of 要不是, you should learn it as one chunk.

A very close equivalent is 如果不是.

• 要不是 is common in spoken Chinese.
• 如果不是 is a bit more neutral/literal.

This is because of tone sandhi with 不.

Normally, 不 is fourth tone: bù.
But when 不 comes before another fourth-tone syllable, it changes to second tone: bú.

Since 是 is fourth tone (shì), 不是 is pronounced búshì.

So:

• 不是 → búshì
• 要不是 → yàobúshì

This is a pronunciation change, not a spelling change.

The comma separates the condition from the result.

• 要不是面试官告诉我 = the condition/background
• 我还不知道有试用期 = the result

This kind of structure is very common in Chinese:

要不是/如果不是 + condition, result

So the comma helps show the pause and the logic clearly.

Here, 还 means still.

So 我还不知道 means:

• I still don’t know
• or in this context, I would still not know

That is why the sentence has a slightly counterfactual feeling:

要不是面试官告诉我，我还不知道有试用期。
= If the interviewer hadn’t told me, I would still not know there is a probation period.

Without 还, the sentence would still be understandable, but 还 makes the meaning more natural and emphasizes that the speaker remained unaware until being told.

Because 知道 is usually negated with 不, not 没.

You normally say:

• 我不知道 = I don’t know
• not 我没知道

For Mandarin learners, a useful rule is:

• 不 often negates states, habits, general facts, or present/future situations
• 没 often negates completed actions or possession

Since 知道 often describes a state of knowledge, Chinese uses 不知道.

The pattern is:

告诉 + person + information

So in this sentence:

• 面试官 = the interviewer
• 告诉我 = told me
• 有试用期 = that there is a probation period

Full structure:

面试官告诉我有试用期
= The interviewer told me that there is a probation period

Chinese often does not need a separate word for that in this kind of sentence.

Compare:

• 他告诉我他要走。 = He told me that he was leaving.
• 老师告诉我们今天考试。 = The teacher told us that there is a test today.

有 here means there is / there are / to have / to exist.

So:

有试用期 = there is a probation period

The sentence is not just saying the speaker knows the term 试用期. It means the speaker did not know that this job/company situation includes a probation period.

That is why 有 is important: it introduces the existence of that condition.

试用期 means probation period.

It is a common workplace term in Chinese. It refers to the trial period at the start of a job, when the employee is being evaluated.

Breakdown:

• 试用 = to use on a trial basis / probationary use
• 期 = period

So together, 试用期 = trial period or probation period.

In this sentence, 面试官 means the interviewer.

Breakdown:

• 面试 = interview
• 官 = officer/official/person in a role

So 面试官 is the person conducting the interview.

In everyday English translation, interviewer is the most natural choice.

Yes. That would be correct.

• 要不是面试官告诉我，我还不知道有试用期。
• 如果不是面试官告诉我，我还不知道有试用期。

Both mean roughly the same thing here.

The difference is mostly in tone:

• 要不是 often sounds more conversational and a bit more emotional
• 如果不是 sounds a little more neutral and literal

No. It means the speaker knows now, because the interviewer told them.

The idea is:

• Before being told, the speaker did not know.
• After being told, the speaker knows.
• If the interviewer had not told them, they would still not know.

So 还不知道 here is part of a hypothetical/counterfactual result, not a statement about the present reality.

Chinese often omits a connector like that when reporting information.

English:

• The interviewer told me that there is a probation period.

Chinese:

• 面试官告诉我有试用期。

This is completely normal. Chinese very often puts the content directly after verbs like:

• 说
• 告诉
• 觉得
• 知道

So there is no missing word here.

Word-for-word, yes, but in natural English the best translation depends on context.

Because of the first half of the sentence (要不是...), the full sentence is better translated as:

• If the interviewer hadn’t told me, I still wouldn’t know there was a probation period.
• If the interviewer hadn’t told me, I wouldn’t even know there is a probation period.

So a very literal translation may sound slightly awkward in English, even though the Chinese is perfectly natural.

Sometimes yes, but the nuance is different.

• 还不知道 emphasizes still not knowing
• 都不知道 often emphasizes surprise, like didn’t even know

So:

• 要不是面试官告诉我，我还不知道有试用期。
  = If the interviewer hadn’t told me, I still wouldn’t know there was a probation period.

• 要不是面试官告诉我，我都不知道有试用期。
  = If the interviewer hadn’t told me, I wouldn’t even know there was a probation period.

Both can work, but 还 is a very natural choice for the idea of still not knowing.

Yes. It is a very useful pattern:

要不是 + someone/something + verb..., I would still...

Examples:

• 要不是你提醒我，我还忘了。
  = If you hadn’t reminded me, I would still have forgotten / I would have forgotten.

• 要不是老师解释，我还不明白。
  = If the teacher hadn’t explained it, I still wouldn’t understand.

• 要不是导航，我还找不到这家店。
  = If it weren’t for the GPS, I still wouldn’t be able to find this shop.

So this sentence is a great model to learn as a whole structure.