kono mama de ha, syukudai ga owaranai node, konya ha geemu wo simasen.

このまま means like this, as things are now, or if things continue this way.

In this sentence, it does not just describe the current state. It suggests:

• the current situation continues
• nothing changes
• at this rate

So このままでは means something like:

• If things stay like this...
• At this rate...
• If I keep going like this...

It often introduces a bad or unwanted result.

The では adds the idea of under this condition or if it stays this way.

So:

• このまま = like this / as it is
• このままでは = if it stays like this / under these circumstances

You can think of では here as setting up the situation that leads to the result in the next clause.

A very common casual version is:

• このままじゃ

So:

• このままでは、宿題が終わらない。
• このままじゃ、宿題が終わらない。

Both mean roughly At this rate, the homework won’t get finished.

Because 終わる is an intransitive verb.

That means it describes something ending / being finished on its own, rather than someone actively finishing it.

So:

• 宿題が終わる = the homework gets finished / is finished
• 宿題を終える = to finish the homework
  or
• 宿題を終わらせる = to make/bring the homework to completion

In this sentence, 終わる is used, so the thing that finishes is marked with が:

• 宿題が終わらない = the homework won’t get finished

Even though English often says I won’t finish my homework, Japanese often uses this intransitive pattern.

Here it means won’t finish or won’t get finished.

Japanese non-past forms can refer to:

• present
• future
• general truths

So 終わらない by itself could mean different things depending on context. But in this sentence, because of このままでは and the following decision about tonight, it clearly has a future-like meaning:

• If things stay like this, the homework won’t be finished.

A natural English translation may also be:

• I won’t finish my homework
• My homework won’t get done

Both ので and から can mean because, but they have different tones.

ので

• softer
• more explanatory
• sounds a bit more objective or polite

から

• more direct
• more personal or assertive
• common in everyday speech

So this sentence:

• 宿題が終わらないので、今夜はゲームをしません。

sounds calm and explanatory:
Because my homework won’t get finished, I’m not playing games tonight.

A version with から would be:

• 宿題が終わらないから、今夜はゲームをしません。

This is also natural, but a little more direct.

The は marks 今夜 as the topic and often adds a slight contrast.

So 今夜は is like saying:

• as for tonight
• tonight, at least
• tonight in particular

This makes sense because the speaker is making a decision specifically about tonight.

Compare:

• 今夜ゲームをしません。
  = I won’t play games tonight.
  (simple statement)

• 今夜はゲームをしません。
  = As for tonight, I won’t play games.
  (slight contrast: maybe other nights are different)

That contrast is very natural here.

In Japanese, ゲームをする is the normal way to say play games, especially video games.

So:

• ゲームをする = to play games
• ゲームをしません = do not / will not play games

Even though English uses play, Japanese commonly uses する with many activities.

In this sentence, しません is the polite negative non-past form, and here it means:

• I won’t play games tonight.

Because Japanese non-past forms cover both present and future.

So しません can mean:

• do not do
• will not do

The time word 今夜 makes it clear that this is about the future:

• 今夜はゲームをしません。
  = I won’t play games tonight.

This is very normal in Japanese. You usually do not need a separate future tense.

Japanese often leaves out subjects when they are understood from context.

In this sentence, the speaker is most naturally talking about themself:

• (I) won’t finish my homework, so (I) won’t play games tonight.

Also, 宿題 strongly suggests the speaker is talking about their own homework, unless context says otherwise.

So even though I and my are not stated, they are understood.

This is one of the most common features of Japanese: subjects and possessives are often omitted when they are obvious.

Yes. The two は do different but related jobs.

このままでは

Here, は helps frame the condition:

• if things stay like this
• under these circumstances

今夜は

Here, は marks the topic and adds contrast:

• as for tonight

So the sentence has a structure like:

• If things continue this way, then as for tonight, I’m not playing games.

This use of は is very common in Japanese because it helps organize the sentence and highlight what is being contrasted or focused on.

A natural casual version would be:

• このままじゃ、宿題が終わらないから、今夜はゲームしない。

Changes:

• では → じゃ
  casual contraction
• ので → から
  more conversational
• しません → しない
  plain form

You may also hear:

• このままじゃ宿題終わらないから、今夜はゲームしない。

This sounds very natural in everyday speech.