daidokoro de haha to issho ni bangohan o tsukuru.

A very natural way to break it down is:

台所で = in the kitchen
母と一緒に = together with my mother
晩ご飯を = dinner
作る = make

So the pattern is basically:

[place] で [person] と一緒に [object] を [verb]

A key point for English speakers is that the verb comes at the end in Japanese.

で marks the place where an action happens.

So:

• 台所で = in the kitchen / at the kitchen as the place where the cooking happens

This is different from に, which often marks:

• a destination
• a specific point in time
• the place where something exists

Since 作る is an action, で is the correct particle here.

Usually, no, not with 作る.

• 台所で作る = make it in the kitchen
• 台所に行く = go to the kitchen
• 台所にいる = be in the kitchen

So for an action taking place somewhere, use で.
For going to a place or existing in a place, に is common.

Because they do slightly different jobs:

• と marks the person you do something with
• 一緒に means together

So 母と一緒に is literally something like together with mother.

This combination is very common and sounds natural.

Yes, absolutely.

• 母と晩ご飯を作る = I make dinner with my mother
• 母と一緒に晩ご飯を作る = I make dinner together with my mother

The version with 一緒に emphasizes the sense of doing it together.
Without it, the meaning is still clear and grammatical.

一緒に is the normal adverbial form meaning together.

You can think of it as a set expression:

• 一緒 = together / same / company
• 一緒に = together, jointly

So in this sentence, 一緒に describes how the action is done.

Here, 母 is read はは.

For many learners, this is confusing because Japanese has several words for mother:

• 母（はは） = my mother, especially when speaking to outsiders
• お母さん（おかあさん） = mom / mother; often used when addressing your own mother, and also for someone else’s mother

In a textbook-style sentence like this, 母 often means my mother in a neutral way.

晩ご飯（ばんごはん） means dinner / evening meal.

It is very close in meaning to 夕飯（ゆうはん）. Both can mean dinner.

Very roughly:

• 晩ご飯 can feel a little more conversational or homey
• 夕飯 is also very common and natural

In everyday Japanese, both are used a lot.

を marks the direct object of the verb.

Here, the thing being made is 晩ご飯, so:

• 晩ご飯を作る = make dinner

This is similar to English make dinner, where dinner is the thing affected by the action.

作る is the plain form, also called the dictionary form.

It is often used in:

• casual speech
• dictionary entries
• textbook examples
• plain-style writing

The polite version is:

• 作ります

So this sentence could become:

• 台所で母と一緒に晩ご飯を作ります。

The meaning is basically the same, but 作ります is more polite.

Japanese plain non-past forms like 作る can mean different things depending on context:

• a habitual action: I make dinner
• a future action: I will make dinner
• a general statement

So this sentence by itself could mean:

• I make dinner in the kitchen with my mother
• I will make dinner in the kitchen with my mother

Context tells you which one is meant.

The subject is omitted, which is extremely common in Japanese.

Japanese often leaves out words like:

• I
• we
• she
• they

if the listener can understand them from context.

So this sentence does not explicitly say who is making dinner. In many beginner examples, the implied subject is often I, but grammatically the sentence itself does not force that reading.

Yes. That is also natural.

Because Japanese uses particles such as で, と, and を, word order is more flexible than in English.

These are all possible:

• 台所で母と一緒に晩ご飯を作る
• 母と一緒に台所で晩ご飯を作る

The most important rule is that the verb usually stays at the end.
Before the verb, the order can often shift for emphasis or style.