watasi ha kodomo ni hon wo yonde agemasu.

は marks the topic of the sentence: as for me.

In a simple sentence like this, 私 is also the person doing the action, so in English it feels like the subject. But Japanese often prefers は when the speaker is setting the topic and talking about what that person does.

So 私は gives a feeling like:

• As for me, ...
• I ...

If you used が instead, it would put more focus on I as the doer.

に marks the recipient or the person who is affected by the action in this sentence.

Here, the child is the person to whom the book is being read.

So:

• 子供に = to a child / for a child

This is very common with verbs involving giving, showing, teaching, reading something to someone, and so on.

を marks the direct object, meaning the thing directly acted on.

Here, the thing being read is 本:

• 本を読む = read a book

So the structure is:

• 子供に = to the child
• 本を = the book
• 読む = read

読んであげます is made from:

• 読んで = the て-form of 読む
• あげます = give (in a helper/benefactive sense)

When Japanese uses て-form + あげる, it means to do something for someone.

So:

• 本を読みます = I read a book
• 子供に本を読んであげます = I read a book for a child / to a child, as a favor or helpful action

The important nuance is that あげます adds the idea that the action benefits someone else.

Because before あげます, the verb must be in the て-form.

The dictionary form is:

• 読む

Its て-form is:

• 読んで

This is a standard pattern:

• Vて + あげる
• Vて + くれる
• Vて + もらう

So 読んであげます follows that grammar pattern.

Not literally in the sense of handing over an object.

In this sentence, あげます is acting like a helper verb. It adds the meaning:

• do something for someone
• do someone the favor of ...

So 読んであげます does not mean give reading. It means:

• read for someone
• read to someone, with a helpful/beneficial nuance

Not always. It depends on the relationship between the speaker and the other person.

〜てあげる can sometimes sound like the speaker is doing someone a favor from a slightly higher or equal position. That is often fine when talking about:

• children
• friends
• family members
• pets

In this sentence, since the recipient is 子供, 読んであげます sounds natural.

But if you are talking about doing something for a teacher, boss, or customer, 〜てあげる may sound too casual or even slightly condescending. In those situations, Japanese often uses more polite expressions such as 〜てさしあげます.

Yes. Very often, Japanese leaves out words that are clear from context.

So in natural conversation, you might simply say:

• 子供に本を読んであげます。

If it is already obvious that I am the one doing it, 私 is unnecessary.

Japanese frequently omits:

• the subject
• the topic
• sometimes other information too

when context makes it clear.

By itself, 子供 does not clearly mark number.

Depending on context, it could mean:

• a child
• children

English forces you to choose singular or plural, but Japanese often does not.

If the context makes it clear, no extra marking is needed. If the speaker really wants to show plurality, they might use something like:

• 子供たち = children

But in many normal sentences, plain 子供 is enough.

Japanese does not use articles like a or the, and nouns usually do not change form for singular/plural the way English nouns do.

So 本 can mean:

• a book
• the book
• books

And 子供 can mean:

• a child
• the child
• children

The exact meaning depends on context.

This is one of the biggest adjustments for English speakers learning Japanese.

The most basic order is:

• 私は — topic
• 子供に — recipient
• 本を — direct object
• 読んであげます — verb

Japanese is often described as SOV: subject-object-verb, with the verb at the end.

However, because particles show each word’s role, Japanese word order is more flexible than English. For example, these can still be understood:

• 私は本を子供に読んであげます。
• 子供に私は本を読んであげます。

Even so, not every order sounds equally natural in every context. The original order is very normal and easy to understand.

They are read:

• 子供 = こども
• 読んで = よんで

So the whole sentence is:

• わたし は こども に ほん を よんで あげます

A useful point here is that 読む is よむ, but in the て-form it becomes よんで.

This sentence can suggest both ideas at once.

• 子供に本を読む already gives the idea of read a book to a child
• 読んであげます adds the idea that the action is done for the child’s benefit

So the full sentence has a nuance like:

• I read a book to a child
• I read a book for a child
• I read a book to a child as a kind/helpful act

In natural English, read a book to a child is often the smoothest translation, but the Japanese includes that extra benefit/favor nuance because of あげます.