zhège wèntí chángcháng chūxiàn.

In standard Mandarin, a demonstrative like 这 or 那 normally needs a measure word before a noun.

So the pattern is:

这 / 那 + measure word + noun

Here, 个 is the measure word:

• 这个问题 = this question / this problem

Saying 这问题 may occur in casual speech or some regional styles, but for learners, 这个问题 is the correct and safest form.

个 is the most common general measure word in Mandarin. Many nouns can use it, especially in everyday speech.

So:

• 一个问题 = a question / a problem
• 这个问题 = this question / this problem
• 那个问题 = that question / that problem

Even though Mandarin has many specific measure words, 个 is the normal one for 问题.

问题 can mean both question and problem, depending on context.

Common uses:

• 我有一个问题。 = I have a question.
• 这个问题很严重。 = This problem is serious.

In 这个问题常常出现, it usually sounds more like problem/issue, because appearing repeatedly fits a recurring issue very naturally. But in the right context, it could also mean a certain question comes up often.

Because 常常 is an adverb, and in Mandarin, adverbs usually go before the verb they modify.

Pattern: Subject + adverb + verb

So:

• 这个问题 常常 出现。

Similar examples:

• 他常常迟到。 = He is often late.
• 我经常去那里。 = I often go there.

This word order is very typical in Chinese.

Yes. 出现 means to appear, to arise, to occur, or to come up.

With 问题, it is very natural. Chinese often uses 出现 for things like:

• problems
• situations
• symptoms
• phenomena
• mistakes

So 这个问题常常出现 means that this issue often comes up, often occurs, or keeps happening.

It does not sound strange in Chinese.

Yes. 经常 and 常常 both mean often, and in this sentence they are very close:

• 这个问题常常出现。
• 这个问题经常出现。

Both are natural.

A rough difference:

• 常常 can feel a bit more conversational and rhythmic.
• 经常 can sound slightly more neutral or general.

In many everyday sentences, they are interchangeable.

Because this sentence is describing a habitual/repeated situation, not a completed event.

• 这个问题常常出现。 = This problem often occurs.

If you add 了, the meaning changes. For example:

• 这个问题出现了。 = This problem has appeared / has arisen.

That sentence refers to a specific occurrence.
Without 了, the sentence sounds like a general statement about something that happens repeatedly.

That would not be normal in standard Mandarin.

The usual order is:

Subject + adverb + verb

So:

• 这个问题常常出现。 ✅

Not:

• 常常这个问题出现。 ❌

Chinese word order is often more fixed than English learners expect. Once you identify:

• 这个问题 = subject
• 常常 = adverb
• 出现 = verb

the sentence structure becomes straightforward.

In everyday speech, 这个 is usually pronounced with a neutral tone on 个:

• zhège

That is the most common pronunciation in natural speech.

Learners may also hear something like zhèige in slower or clearer pronunciation, but zhège is the usual spoken form.

So for practical purposes, saying zhège wèntí chángcháng chūxiàn is perfectly fine.

Yes. In this sentence, 出现 works as an intransitive verb, meaning to appear / to occur on its own.

So:

• 这个问题常常出现。 = This issue often occurs.

You can also use 出现 in other patterns, such as:

• 出现了问题。 = A problem appeared / A problem arose.
• 这种情况经常出现。 = This situation often occurs.

So 出现 does not always need to take a direct object.

It is mostly neutral and very natural. It can be used in:

• conversation
• class
• writing
• reports
• technical discussion

Because 问题, 常常, and 出现 are all common standard Mandarin words, the sentence sounds broadly useful rather than especially formal or slangy.

Only if the meaning changes appropriately.

• 这个问题常常出现。 = This problem/issue often occurs.
• 这件事常常出现。 is less natural, because 事 means matter/event, and 出现 pairs more naturally with 问题, 情况, 现象, etc.

More natural alternatives might be:

• 这种问题常常出现。 = This kind of problem often occurs.
• 这种情况常常出现。 = This kind of situation often occurs.

So 问题 is a very good fit with 出现.