Je vois vingt photos.

Because voir is the infinitive form of the verb. In a full sentence, French usually needs a conjugated form.

Here, vois is the present tense form used with je.

Present tense of voir:

• je vois
• tu vois
• il / elle / on voit
• nous voyons
• vous voyez
• ils / elles voient

So je vois is the correct subject + verb combination.

Vois is pronounced roughly like vwah.

A few useful points:

• the v is pronounced normally
• oi in modern French is usually pronounced wa
• the final s is silent

So vois sounds the same as voit in normal speech.

French uses j’ only before a vowel sound or a silent h.

Examples:

• j’aime
• j’habite

But vois starts with a consonant sound, so you keep je:

• je vois

In very casual speech, some people may reduce the sound of je, but the normal written form is still je vois.

After an exact number, French normally uses the noun without an article.

So you say:

• vingt photos
• trois livres
• deux amis

Not:

• vingt les photos
• vingt des photos
  unless you mean something special in a different structure

This is one of the big differences from some other French patterns, because with a plain number, the structure is usually just:

number + plural noun

Because the number vingt is more than one, so the noun must be plural.

That gives:

• singular: une photo
• plural: des photos
• after a number: vingt photos

In writing, the plural is shown with -s on photos.

Usually, no. The final s in photos is silent.

So even though photos is plural in writing, you normally do not hear the s.

This is very common in French:

• livres
• amis
• photos

Their final plural -s is usually silent unless a liaison situation changes things.

In vingt photos, vingt is usually pronounced roughly like van with a nasal vowel.

Important detail:

• the final t is not pronounced here
• that is because the next word, photos, begins with a consonant sound

So:

• vingt photos → the t stays silent

But in some other contexts, the t can be pronounced, especially before a vowel sound:

• vingt ans

No. There is no liaison here.

Why?

• photos begins with ph, which is pronounced like f
• that is a consonant sound
• liaison happens before a following vowel sound or silent h, not before a consonant

So vingt photos is said smoothly, but without liaison.

Because this is the normal French order for a basic statement:

subject + verb + quantity + noun

So:

• Je = subject
• vois = verb
• vingt photos = object

This is very similar to ordinary English word order in a simple sentence. French does not move the number after the noun here.

Photo is feminine:

• une photo
• la photo

In this sentence, you do not directly see the feminine article because the noun comes after a number:

• vingt photos

But the gender still matters in other contexts, especially with articles and adjectives:

• une belle photo
• les photos sont belles

Also, photo is a very common shortened form of photographie.

Because in modern spoken French, several present-tense forms of many verbs sound the same even though they are spelled differently.

For voir:

• je vois → sounds like vwa
• tu vois → sounds like vwa
• il voit → sounds like vwa
• ils voient → also sounds like vwa

French spelling often preserves grammatical distinctions that are not clearly heard in speech. That is why learning both the written forms and the subject pronouns is important.

Sometimes yes, but it is not exactly the same idea.

• voir focuses on seeing
• regarder focuses more on looking at / watching deliberately

So:

• je vois vingt photos suggests that twenty photos are in view or that I can see them
• je regarde vingt photos suggests I am actively looking through them

Both are possible in the right context, but they are not always interchangeable.