wǒ juéde zhè gè chéngshì de kōngqì bú tài hǎo, suǒyǐ hěn duō rén wǎnshang qù gōngyuán sànbù, shuō nàli de kōngqì bǐ jiā fùjìn hǎo duō.

觉 is a multiple-pronunciation character.

• In 觉得, it is pronounced jué and means to feel / to think.
• In words related to sleep, like 睡觉, it is pronounced jiào.

So:

• 我觉得... = I think / I feel...
• 睡觉 = to sleep

This is something you usually just learn word by word.

Normally, 不 is pronounced bù, but it changes to bú when it comes before a 4th-tone syllable.

Here:

• 太 is tài (4th tone)
• so 不太 becomes bú tài

This is a very common tone change:

• 不是 → bú shì
• 不要 → bú yào
• 不对 → bú duì

But if 不 is not before a 4th tone, it stays bù.

我觉得 is usually a fairly natural, conversational way to say I think or I feel.

It often sounds:

• personal
• subjective
• sometimes a little softer than making a direct statement

So 我觉得这个城市的空气不太好 is like:

• I think the air in this city isn’t very good
• I feel that the air in this city is not so good

In everyday speech, 我觉得 is extremely common when giving opinions.

In Chinese, when you use a demonstrative like 这 (this) or 那 (that) before a noun, you usually need a measure word / classifier.

Pattern:

• 这/那 + measure word + noun

So:

• 这个城市 = this city
• 那个人 = that person
• 这本书 = this book

Here, 个 is the classifier. It is the most common general classifier, though some nouns have more specific ones.

的 often links two nouns, a bit like ’s or of in English.

So:

• 这个城市的空气 = this city’s air / the air of this city
• 那里的空气 = the air there

It shows a relationship between the two parts.

A simple pattern is:

• A 的 B = B that belongs to / is connected with A

Examples:

• 我的朋友 = my friend
• 学校的老师 = the school’s teachers
• 公园的空气 = the park’s air / the air in the park

Yes — 不太好 usually means not very good, not so good, or not that good.

This is often softer than simply saying 不好.

Compare:

• 不好 = not good / can sound more direct
• 不太好 = not very good / not so good, often milder

Chinese often uses forms like 不太 + adjective to sound less harsh.

Examples:

• 不太方便 = not very convenient
• 不太清楚 = not very clear
• 不太喜欢 = don’t really like

In 很多人, 很多 is best understood as one unit meaning many / a lot of.

So:

• 很多人 = many people

Here, 很 is not functioning exactly like the English very in a literal word-by-word way. You should learn 很多 as a common phrase.

Examples:

• 很多地方 = many places
• 很多问题 = many questions
• 很多学生 = many students

So don’t translate it too mechanically as very many people. In natural English, it just means many people.

Chinese usually puts time expressions before the main verb.

A common word order is:

• Subject + Time + Verb + Object

So:

• 很多人晚上去公园散步
• literally: many people at night go to the park for a walk

This is very normal in Chinese.

Other examples:

• 我明天去北京。 = I’m going to Beijing tomorrow.
• 他晚上看书。 = He reads at night.

Time words can sometimes appear in slightly different positions, but putting them before the verb is very common.

This structure is very common:

• 去 + place + verb

So:

• 去公园散步 = go to the park to take a walk

The destination comes after 去, and then the action follows.

Compare:

• 去学校上课 = go to school to attend class
• 去商店买东西 = go to the store to buy things
• 去朋友家吃饭 = go to a friend’s home to eat

Here, 散步 means to take a walk / to go for a walk.

所以 means so or therefore.

It connects the first idea to the result:

• I think the air in this city is not very good, so many people go to the park in the evening...

It introduces the consequence or result of what was said before.

A common pattern is:

• 因为...所以... = because... so...

But in this sentence, only 所以 appears, which is also very normal.

The subject of 说 is understood to be the same as the previous subject: 很多人.

So the meaning is:

• Many people go to the park in the evening and say that the air there is much better than near their homes.

Chinese often omits repeated subjects when they are already clear from context.

If you spelled it out fully, it could be:

• 很多人晚上去公园散步，说那里的空气比家附近好多。

The omitted subject after the comma is still 很多人.

The basic comparison pattern is:

• A 比 B + adjective
• A is more adjective than B

So here:

• 那里的空气比家附近好 = The air there is better than near home

In the sentence, it becomes:

• 那里的空气比家附近好多
• The air there is much better than near home

So:

• A = 那里的空气 (the air there)
• B = 家附近 (the area near home)
• 好 = good
• 多 = much / a lot, making the comparison stronger

Great question. 多 can play different roles.

Sometimes it means many/much by itself:

• 很多人 = many people

But after a comparative adjective, 多 often means by a lot / much.

So:

• 比家附近好 = better than near home
• 比家附近好多 = much better than near home

This use of 多 strengthens the comparison.

Other examples:

• 他比我高多了。 = He is much taller than me.
• 今天比昨天冷多了。 = Today is much colder than yesterday.

Both ideas relate to near home, but 家附近 is the more natural everyday way here.

In Chinese, some noun combinations are very compact, and 家附近 works like:

• the area near home
• near one’s home

Adding 的 is often unnecessary in this kind of expression.

Compare:

• 学校附近 = near the school
• 我家附近 = near my home
• 公司附近 = near the company

So 家附近 is a common, natural phrase.

Yes. In everyday speech, 晚上 is usually pronounced:

• wǎnshang

The second syllable shang is commonly a neutral tone here.

This is very common with time words and some everyday nouns:

• 早上 = zǎoshang
• 晚上 = wǎnshang

You may sometimes see full tones in dictionaries, but in normal speech the neutral tone is very natural.

They mean basically the same thing: there.

• 那里 is common and standard
• 那儿 is also very common, especially in northern speech / Beijing-style Mandarin

So:

• 那里的空气 = the air there
• 那儿的空气 = same meaning

Learners can safely use 那里 if they want a standard form.

They are similar, but not always identical to English punctuation.

In this sentence, the commas help separate chunks of meaning:

1. 我觉得这个城市的空气不太好，
2. 所以很多人晚上去公园散步，
3. 说那里的空气比家附近好多。

Chinese writing often uses commas to separate clauses quite freely, especially in longer sentences. The punctuation helps show the flow of ideas, even when English might choose slightly different punctuation or sentence breaks.

Yes, Chinese often repeats nouns more than English does, especially when it helps clarity.

Here, 那里的空气 clearly means:

• the air there (in the park)

Even though English might sometimes avoid repeating air, Chinese often repeats the noun naturally.

Compare:

• 这个城市的空气不太好。
• 那里的空气比家附近好多。

This repetition sounds clear and normal in Chinese, not awkward.