nǐ búyào yìzhí zài fángjiān lǐ shàngwǎng.

不要 is a very common way to make a negative command in Chinese.

• 不要 + verb = don’t do ...
• So 不要上网 means don’t go online / don’t use the internet

If you used just 不, it would usually sound more like a general statement, not a command:

• 你不上网。 = You don’t go online. / You are not going online.
• 你不要上网。 = Don’t go online.

So in this sentence, 不要 is the natural choice because the speaker is telling someone not to do something.

This is because of tone sandhi, a common tone-change rule in Mandarin.

Normally:

• 不 is fourth tone: bù

But when 不 comes before another fourth-tone syllable, it changes to second tone:

• 要 is fourth tone: yào
• So 不要 is pronounced búyào

The character is still 不, but the pronunciation changes in speech.

一直 means continuously, the whole time, or all the time.

In this sentence, it adds the idea of doing something too continuously:

• 不要一直上网 = don’t keep going online
• 不要一直在房间里上网 = don’t keep staying in your room using the internet

So the sentence is not just saying don’t go online once. It means don’t keep doing it all the time.

In Chinese, location phrases often come before the main verb.

So the structure is:

• 在 + place + verb

Here:

• 在房间里 = in the room
• 上网 = go online / use the internet

So:

• 在房间里上网 = use the internet in the room

This is a very normal Chinese word order. English often puts the place after the verb, but Chinese often puts it before:

• English: use the internet in the room
• Chinese: in the room use the internet

房间 means room.

房间里 means inside the room.

The 里 adds the idea of inside. It is very common after place nouns:

• 家 = home

• 家里 = at home / inside the home

• 学校 = school
• 学校里 = in the school

So:

• 在房间 can sometimes appear in certain contexts, but
• 在房间里 sounds more complete and natural for in the room

上网 literally looks like go onto the net, but in real usage it means:

• go online
• use the internet
• surf the internet

It does not necessarily mean physically moving somewhere. It is just the normal verb for being online.

Examples:

• 我晚上常常上网。 = I often go online at night.
• 别一直上网。 = Don’t stay online all the time.

So in this sentence, 上网 is the main action being warned against.

This follows a very common Chinese pattern:

subject + negative command + adverb + location + verb

Breaking it down:

• 你 = you
• 不要 = don’t
• 一直 = continuously / all the time
• 在房间里 = in the room
• 上网 = go online / use the internet

So the logic is:

• You + don’t + keep + in the room + going online

That sounds unusual in English, but it is normal in Chinese. Chinese often places time, frequency, manner, and location before the main verb.

It could be omitted if the context already makes it clear who the speaker is talking to.

For example:

• 不要一直在房间里上网。 = Don’t keep using the internet in your room.

Chinese often leaves out subjects when they are obvious.

Including 你 makes it more direct:

• 你不要一直在房间里上网。

This can sound like:

• You, don’t keep using the internet in your room.

So 你 is not always required, but it is perfectly natural if the speaker wants to clearly address that person.

Yes. 别 is another very common way to say don’t in spoken Chinese.

So you could say:

• 你别一直在房间里上网。

This has basically the same meaning.

A rough comparison:

• 不要 = a little fuller, sometimes slightly more formal or emphatic
• 别 = very common, often a bit more conversational

Both are natural here. Learners should recognize both patterns:

• 不要 + verb
• 别 + verb

The main thing being criticized is 一直上网 — being online all the time.

在房间里 gives the location, so the full idea is something like:

• Don’t keep staying in your room using the internet.

Depending on context, the speaker may also be implying:

• you should go outside more
• you should stop isolating yourself
• you should not spend all your time online in your room

So grammatically, 上网 is the main action, and 在房间里 tells you where it is happening.