haha ha bentoubako ni itigo to budou mo irete kuremasita.

は marks 母 as the topic of the sentence.

So 母は means something like:

• As for my mother, ...
• My mother, ...

In English we usually just say my mother as the subject, but in Japanese は often sets up what the sentence is going to talk about.

A simple way to read the start is:

• 母は = As for my mother / My mother

In this sentence, 母 is also the person doing the action, but は mainly shows topic rather than simply acting like English subject marking.

When Japanese speakers talk about their own mother to someone else, they often use 母.

So here, 母 most naturally means:

• my mother

By contrast:

• お母さん is often used when addressing your mother directly
• or when referring to someone else’s mother
• or in child-directed speech

So a learner can think of this contrast:

• 母 = my mother (when talking about her)
• お母さん = mom / mother (more respectful or direct)

Here に marks the destination or container that something is put into.

So:

• 弁当箱に = into the lunch box

With the verb 入れる (to put in), に is very common for the place/container receiving the item.

So the structure is:

• 弁当箱に いちごとぶどうも 入れて
• put strawberries and grapes too into the lunch box

と here means and.

So:

• いちごとぶどう = strawberries and grapes

This と is used when listing items clearly and completely.

Compare:

• いちごとぶどう = strawberries and grapes
• いちごやぶどう = things like strawberries and grapes

So in this sentence, と gives a straightforward A and B meaning.

も means also / too.

So いちごとぶどうも means that strawberries and grapes were also included, in addition to something else.

The idea is:

• Mother put other things in the lunch box
• and she added strawberries and grapes too

A key point: も often replaces another particle rather than being added after it.

So instead of saying:

• いちごとぶどうを入れました

you get:

• いちごとぶどうも入れました

where も carries the sense of too / also.

In this sentence, the natural reading is:

• strawberries and grapes too

Even though も comes right after ぶどう, it often applies to the whole AとB phrase.

So:

• いちごとぶどうも usually = strawberries and grapes too

A learner might expect Japanese to mark the whole phrase separately, but in practice this wording is normal.

Because も is taking its place.

Normally, with 入れる you might expect:

• いちごとぶどうを入れる
• put strawberries and grapes in

But when you want to say also / too, Japanese often uses も instead of を:

• いちごとぶどうも入れる
• put strawberries and grapes in too

So も is not just added on top of を here; it replaces it.

Because 入れて is part of the pattern:

• て-form + くれる

Here the full verb expression is:

• 入れてくれました

This means:

• (someone) put it in for me / did me the favor of putting it in

So 入れて by itself is not the final verb of the sentence. It connects 入れる to くれる.

This is one of the most important parts of the sentence.

くれる shows that someone does something for the speaker or for someone close to the speaker, and that the action is viewed as a benefit.

So compare:

• 母は弁当箱にいちごとぶどうも入れました。
  = Mother put strawberries and grapes in the lunch box.

• 母は弁当箱にいちごとぶどうも入れてくれました。
  = Mother put strawberries and grapes in the lunch box for me.

So くれました adds a feeling like:

• she did this for me
• I received this helpful/nice action from her

Usually it is the speaker or someone in the speaker’s in-group.

So this sentence most naturally means that the mother put strawberries and grapes into the lunch box for me.

Japanese often leaves that person unstated when it is obvious from context.

So even though there is no explicit for me, the benefactive verb くれました strongly suggests it.

Because くれました is the past polite form of くれる.

So the sentence describes a completed action:

• Mother put strawberries and grapes in the lunch box for me.

The plain form would be:

• くれた

The polite form is:

• くれました

So the sentence is polite and past tense at the same time.

Japanese word order is more flexible than English, but the given order is very natural.

This sentence follows a common pattern:

• topic + place/container + item + verb

So:

• 母は — topic
• 弁当箱に — destination/container
• いちごとぶどうも — thing being put in
• 入れてくれました — verb phrase

Other orders are sometimes possible for emphasis, but this version is standard and easy to understand.

Yes. Japanese often leaves out information that is understood from context.

Here, the sentence does not explicitly say:

• whose lunch box it is
• what other things were already in it
• who exactly received the favor

But listeners can naturally understand something like:

• it was the speaker’s lunch box or lunch
• there were other contents too
• the mother did this for the speaker

That kind of omission is very normal in Japanese.