wǒ xǐhuan mǎ.

Yes. This sentence uses the very common Subject + Verb + Object order:

• 我 = subject
• 喜欢 = verb
• 马 = object

So it works like English I like horses / I like horse(s).

Chinese often feels different from English, but in simple sentences like this, the basic word order is very familiar.

喜欢 is normally treated as one two-syllable word meaning to like.

Even though it is written with two characters:

• 喜
• 欢

you should learn 喜欢 as a single vocabulary item.

This is very common in Mandarin: many words are made of two characters but function as one word.

Because in 喜欢, the second syllable huan is usually pronounced in the neutral tone.

So the pronunciation is:

• xǐ = third tone
• huan = neutral tone

That is why you may see it written as xǐhuan instead of xǐhuān.

The neutral tone is shorter and lighter than a full tone.

In careful citation form, the tones are:

• 我 wǒ = third tone
• 喜 xǐ = third tone
• 欢 huan = neutral tone
• 马 mǎ = third tone

But in natural speech, third-tone sandhi happens.

Because 我 is followed by another third-tone syllable (喜), 我 is usually pronounced more like a second tone:

• wó xǐhuan mǎ

So although it is still written wǒ, it often sounds like wó in this sentence.

Also, many third tones in normal speech are not fully dipped every time. Native speech is usually smoother and less exaggerated than beginner textbook recordings.

Mandarin does not use articles like English a/an/the.

So 马 by itself can mean different things depending on context, such as:

• horse
• a horse
• horses
• the horse

In this sentence, the most natural interpretation is a general statement: I like horses.

If you wanted to be more specific, Chinese would use other words, not articles:

• 我喜欢一匹马。 = I like a horse / one horse.
• 我喜欢这匹马。 = I like this horse.

It can mean either in a very general sense, because Mandarin nouns usually do not change form for singular vs. plural.

So 马 can refer to:

• one horse
• horses in general

In 我喜欢马, it most naturally means horses as a category, or horse(s) in general.

Chinese often leaves number unspecified unless it matters.

Because Mandarin nouns usually do not mark plural the way English does.

Compare:

• English: horse / horses
• Mandarin: 马 for both, depending on context

Chinese can add words if needed to make number clear:

• 一匹马 = one horse
• 两匹马 = two horses

But if the sentence is just a general statement, the bare noun 马 is completely normal.

Not here.

Measure words are needed when you specify a number or a demonstrative like this/that:

• 一匹马 = one horse
• 这匹马 = this horse
• 那匹马 = that horse

But after a verb like 喜欢, if you are talking about something in general, you can just say:

• 我喜欢马。

A common measure word for horses is 匹.

Because 喜欢 is already the main verb.

Beginners sometimes want to insert 是 because English often uses to be, but here you do not need it.

• 我喜欢马。 = correct
• 我是喜欢马。 = usually not correct for a basic neutral statement

Use 是 mainly when one noun is being identified as another noun, like:

• 我是学生。 = I am a student.

But with a normal action or feeling verb like 喜欢, you just use the verb directly.

Yes, it is natural if you mean I like horses in a general sense.

However, depending on what you really mean, native speakers might choose a more specific sentence:

• 我喜欢马。 = I like horses.
• 我喜欢这匹马。 = I like this horse.
• 我喜欢骑马。 = I like riding horses / I like horse-riding.

So the sentence is correct, but context matters.

Yes.

• 我喜欢马。 = I like horses.
• 我很喜欢马。 = I really like horses / I like horses very much.

This is a very common way to make the feeling stronger.

Just remember that 喜欢 is a verb, so 很 here means something like very or really, not the special grammatical use it often has before adjectives.

No. Standard written Chinese normally does not put spaces between words.

So this sentence is usually written as:

• 我喜欢马。

Learner materials often add spaces to help beginners see the parts more clearly, but native writing does not usually do that.

Also, notice the Chinese full stop:

• 。

This is the normal Chinese sentence-ending period.