هذا السلم قديم.

A careful MSA pronunciation is:

hādhā as-sullamu qadīmun

In normal pause, learners often hear or say it more like:

hādhā as-sullam qadīm

A few notes:

• هذا = hādhā
• السلم begins with س, which is a sun letter, so ال is pronounced as as-, not al-
• قديم = qadīm

If you include full case endings in careful reading:

• هذا
• السُّلَّمُ
• قَدِيمٌ

So the fully vocalized sentence is:

هٰذَا السُّلَّمُ قَدِيمٌ

Because س is one of the sun letters.

In Arabic, when الـ comes before a sun letter, the l sound assimilates to the next consonant. So:

• السلم is pronounced as-sullam
• not al-sullam

In writing, the ل is still there, but in pronunciation it blends into the س.

That is also why you often see a shadda on the first consonant after ال in fully vocalized text:

• السُّلَّم

Here, السلم means the ladder or the staircase/stairs, depending on context.

Without vowel marks, السلم can be ambiguous in writing, because Arabic often leaves short vowels unwritten. In this sentence, the intended meaning is clearly the object that can be old, so it is understood as:

• السُّلَّم = the ladder / the staircase

Not every possible reading of these letters would fit this sentence naturally, so context helps.

هذا means this and is the masculine singular demonstrative.

So:

• هذا = this
• السلم = the ladder/staircase

Together:

• هذا السلم = this ladder / this staircase

Arabic commonly places the demonstrative before the noun in this kind of sentence.

Because السلم is masculine singular in Arabic.

Arabic demonstratives must agree with the noun in gender and number. So:

• هذا = this for masculine singular
• هذه = this for feminine singular

Since السلم is masculine, the correct form is:

• هذا السلم

In Arabic, the verb to be in the present tense is usually not written or spoken in simple sentences like this.

So:

• هذا السلم قديم literally looks like this ladder old
• but it means This ladder is old

This is completely normal in Arabic. The present-tense is/am/are is usually omitted.

If you wanted a past-tense sentence, Arabic would use a verb, for example:

• كان هذا السلم قديماً = This ladder was old

Because قديم here is not just an adjective directly attached to the noun; it is the predicate of the sentence.

Compare these two ideas:

1. هذا السلم قديم
   = This ladder is old
   Here قديم is the predicate, so it does not take ال.

2. هذا السلم القديم
   = this old ladder
   Here القديم directly describes السلم, so it matches it in definiteness and takes ال.

This is a very important difference in Arabic:

• noun + adjective inside one noun phrase: the adjective matches in definiteness
• noun + predicate adjective in a full sentence: the predicate is usually indefinite

Because of the definiteness pattern.

In هذا السلم قديم:

• السلم is definite because of ال
• قديم is indefinite because it has no ال

That strongly signals a full sentence:

• This ladder is old

If Arabic wanted to say this old ladder, it would normally be:

• هذا السلم القديم

There, both the noun and the adjective are definite.

In Arabic, adjectives and predicate adjectives normally come after the noun they relate to.

So:

• السلم القديم = the old ladder
• هذا السلم قديم = this ladder is old

This is different from English, where adjectives usually come before nouns:

• old ladder

But after a linking verb in English, adjectives also come after:

• The ladder is old

Arabic simply leaves out is in the present tense.

Yes. It agrees in gender and number, and in many contexts also in other grammatical features.

Since السلم is masculine singular, the predicate is also masculine singular:

• قديم

If the noun were feminine singular, you would expect:

• قديمة

For example:

• هذه السيارة قديمة = This car is old

A fully vocalized version is:

هٰذَا السُّلَّمُ قَدِيمٌ

Breakdown:

• هٰذَا = hādhā
• السُّلَّمُ = as-sullamu
• قَدِيمٌ = qadīmun

In everyday writing, these vowel marks are usually omitted, so you normally see:

هذا السلم قديم

Because in normal speech and in pausal pronunciation, the final case ending is often not pronounced.

So:

• careful grammatical reading: qadīmun
• normal pause at the end of the sentence: qadīm

The same applies to السُّلَّمُ, which may sound like as-sullam when pausing naturally.

This is very common and not a mistake.

It is a nominal sentence.

Arabic sentences are often divided into:

• verbal sentences: start with a verb
• nominal sentences: start with a noun or noun-like element

This sentence starts with هذا, so it is treated as a nominal sentence:

• هذا السلم = the topic / subject part
• قديم = the predicate / comment about it

So the structure is basically:

• This ladder
  • old
• meaning: This ladder is old

Not naturally in this exact form.

هذا السلم قديم most naturally means:

• This ladder is old

If you want to say:

• This is an old ladder

Arabic would more naturally use an indefinite noun after the demonstrative, such as:

• هذا سُلَّمٌ قديمٌ

That structure is different from:

• هذا السلم قديم

The presence of ال on السلم helps show that the meaning is This ladder is old, not This is an old ladder.

That is just a normal Arabic pattern.

In Arabic, demonstratives like هذا are commonly followed by a definite noun:

• هذا الكتاب = this book
• هذه السيارة = this car
• هذا السلم = this ladder/staircase

So although word-for-word it may look like this the ladder, the correct English translation is simply:

• this ladder

This is one of those places where Arabic and English organize noun phrases differently.

A simple breakdown is:

• هذا = this
• السلم = the ladder / the staircase
• قديم = old

Grammar:

• هذا السلم = the subject-like part: this ladder
• قديم = the predicate: old

So the full meaning is:

• This ladder is old

Yes. This pattern is very common.

For example:

• هذا السلم جديد = This ladder is new
• هذا السلم طويل = This ladder is tall/long
• هذا السلم مكسور = This ladder is broken

The structure stays the same:

• هذا + noun + predicate adjective

Yes, a few very common points:

1. No present-tense is
   Arabic says هذا السلم قديم where English says This ladder is old.

2. Definite noun after a demonstrative
   Arabic uses هذا السلم, literally something like this the-ladder, but it simply means this ladder.

3. Predicate adjective is indefinite
   قديم has no ال because it means is old, not old ladder.

4. Sun-letter pronunciation
   السلم is pronounced as-sullam, not al-sullam.

5. Agreement matters
   هذا and قديم match the noun’s masculine singular form.

These are exactly the kinds of details that become much easier with repeated exposure.