jiàoliàn zhīdào wǒ de mùbiāo.

The sentence follows the standard Mandarin word order:

Subject + Verb + Object

• 教练 = the coach / trainer
• 知道 = knows
• 我的目标 = my goal

So literally, it is:

Coach knows my goal.

This is very similar to English word order, which makes this sentence straightforward.

的 is a very common particle used to show possession or modification.

Here:

• 我 = I / me
• 我的 = my
• 目标 = goal

So 我的目标 means my goal.

You can think of 的 here as functioning a lot like English 's or of, depending on context.

In this sentence, 我的目标 with 的 is the normal and natural form.

Sometimes in Mandarin, 的 can be omitted in close relationships or very short, common combinations, such as:

• 我妈 = my mom
• 我老师 is sometimes heard in casual speech, but 我的老师 is more standard

With 目标, you normally keep 的:

• 我的目标 = correct and natural
• 我目标 = not natural in standard Mandarin

So for this sentence, keep 的.

教练 usually means coach or trainer, depending on context.

For example:

• in sports: coach
• in fitness or instruction: trainer

So 教练知道我的目标 could mean:

• The coach knows my goal
• The trainer knows my goal

The exact English translation depends on the situation.

知道 means to know in the sense of being aware of something or having knowledge of a fact.

In this sentence, the coach knows a piece of information: my goal.

A common comparison is with 认识:

• 知道 = know a fact / be aware of
• 认识 = know a person / be acquainted with / recognize

So:

• 我知道这件事。 = I know about this matter.
• 我认识他。 = I know him.

In 教练知道我的目标, 知道 is correct because the object is information, not a person.

Because this is an action verb sentence, not a linking-verb sentence.

• 知道 already means to know
• The sentence is saying what the coach does

So:

• 教练知道我的目标。 = The coach knows my goal.

You do not need 是 here.

Mandarin uses 是 mainly to link nouns, not before most ordinary verbs.

For example:

• 他是教练。 = He is a coach.
• 他知道我的目标。 = He knows my goal.

Usually, yes. 目标 often means goal, target, or objective.

Depending on context, it can refer to:

• a personal goal
• a training target
• a business objective
• a literal target

In this sentence, 我的目标 most naturally means my goal.

So if the meaning shown to the learner is The coach knows my goal, that is a very good translation.

Here are the tones:

• 教练 jiàoliàn = 4th tone + 4th tone
• 知道 zhīdào = 1st tone + neutral/light 4th-sounding second syllable in many teaching materials it is written as 1st + 4th
• 我 wǒ = 3rd tone
• 的 de = neutral tone
• 目标 mùbiāo = 4th tone + 1st tone

A learner should especially notice:

• 的 is usually light and unstressed
• 我 is a 3rd tone, but in normal speech it may sound lower and shorter depending on flow
• 知道 is a very common word, so it is worth practicing as a whole

Yes, sometimes Mandarin can drop the subject if it is clear from context.

For example, in conversation, someone might simply say:

• 知道我的目标。

if it is already obvious who knows it.

But the full sentence:

• 教练知道我的目标。

is clearer and more complete, especially for learners.

Yes, in natural English, both can work depending on context.

Mandarin 知道 often covers both ideas:

• know
• know about
• be aware of

So 教练知道我的目标 can mean:

• The coach knows my goal
• The coach knows about my goal
• The coach is aware of my goal

If the meaning has already been provided to the learner, that translation is probably the intended one, but the Mandarin itself can allow a little flexibility in English.

Because 知道 is a transitive verb, so the thing that is known comes after it as the object.

Structure:

• 教练 = subject
• 知道 = verb
• 我的目标 = object

This is the normal Mandarin pattern:

Subject + Verb + Object

So the order is natural and expected.

That would change the meaning and structure.

• 教练知道我的目标。 = The coach knows my goal.
• 教练知道目标是我的。 = The coach knows that the goal/target is mine.

The second sentence sounds different and is used in a different situation. It focuses on ownership of the target/goal, not on the content of your goal.

So if you want to say The coach knows my goal, use:

教练知道我的目标。

It is neutral and very natural.

None of the words are slang or unusually formal:

• 教练 is standard
• 知道 is standard and very common
• 目标 is standard and works in many contexts

So this sentence is appropriate in everyday speech and writing.