Tôi gọi cho bố.

Tôi means I.

It is a neutral and polite way to refer to yourself, and it works well in textbook Vietnamese. However, in real life, Vietnamese often uses relationship-based pronouns instead of a fixed word for I.

For example, when talking to family, a speaker might say:

• con if speaking to parents
• em if speaking to an older sibling or someone slightly older
• anh or chị depending on gender and relationship

So tôi is correct, but in a real family situation, a Vietnamese speaker might more naturally say something like Con gọi cho bố.

In gọi cho bố, cho marks the person receiving the call.

So the pattern is:

gọi cho + person

This is very common when gọi means to call/phone someone.

Here, cho does not literally mean for in the English sense. It is part of a natural Vietnamese way to show who the action is directed toward.

Yes, many speakers would understand and accept Tôi gọi bố.

Both forms occur:

• Tôi gọi bố
• Tôi gọi cho bố

The version with cho makes the recipient relationship more explicit and often sounds very natural in everyday speech, especially in phone-call contexts.

So for a learner:

• Tôi gọi cho bố = definitely good and natural
• Tôi gọi bố = also possible

Bố means dad or father.

It is a very common word, especially in northern Vietnamese and in standard-learning materials. Other families or regions may use different words, such as:

• ba
• cha
• tía in some regional varieties

So the exact family word depends on region and household, but bố is completely standard and useful to know.

The word order is:

Tôi + gọi + cho + bố
subject + verb + recipient marker + person

So Vietnamese is behaving quite simply here:

• Tôi = the subject
• gọi = the action
• cho bố = the person the call is directed to

English learners sometimes expect extra verb changes or tense forms, but Vietnamese does not change the verb in that way.

By itself, Tôi gọi cho bố does not clearly mark tense.

Depending on context, it could mean:

• I call Dad
• I’m calling Dad
• sometimes even I’ll call Dad

Vietnamese often leaves time reference to context, or adds a time/tense marker when needed. For example:

• Tôi đang gọi cho bố. = I am calling Dad.
• Tôi đã gọi cho bố. = I called Dad.
• Tôi sẽ gọi cho bố. = I will call Dad.

So the basic sentence is tense-neutral unless context makes the time clear.

Each word has its own tone:

• tôi — no tone mark, so it has the ngang tone
• gọi — has the nặng tone
• cho — no tone mark, so ngang
• bố — has the sắc tone

A rough guide:

• tôi sounds somewhat like English toy, but not exactly
• gọi has a short, heavy, low tone
• cho is level
• bố has a rising tone

The most important thing is to notice that tone is part of the word, not just extra pronunciation detail.

Yes, sometimes.

Vietnamese often drops the subject when it is already obvious from context. So in conversation, someone might simply say:

Gọi cho bố.

Depending on context, that could mean:

• Call Dad.
  or
• (I’ll) call Dad.

But as a clear standalone sentence for learners, Tôi gọi cho bố is a good full form.

Usually, no—not in normal family conversation.

That is because Vietnamese pronouns depend heavily on relationship. When talking to your father, you would more naturally call yourself con, not tôi.

So in a real family context, these are more natural:

• Con gọi cho bố.
• Con gọi bố.

Using tôi with your father would sound distant, unusually formal, or unnatural in most everyday situations. Textbooks often use tôi because it is easy for beginners to learn first.