حطيت البطانية فوق السرير قبل ما انام.

حطيت means I put or I placed.

It comes from the Levantine verb حطّ = to put / to place.

The ending -يت shows first person singular in the past, so:

• حطّيت = I put
• حطّ = he put
• حطّت = she put

So the sentence starts with a past action done by I.

Because Arabic often includes the subject inside the verb itself.

In حطيت, the ending already tells you the subject is I, so أنا is not necessary.

You could say:

• أنا حطيت البطانية فوق السرير قبل ما انام

but in normal speech, leaving out أنا is very common unless you want emphasis.

Because the base verb is حطّ, which has a doubled final consonant.

That doubled sound is important in pronunciation. حطيت is pronounced roughly like:

• ḥaṭ-ṭeet

not just ḥa-teet.

In Arabic, this kind of consonant doubling is very common and can affect both pronunciation and meaning.

Because both nouns are definite: the blanket and the bed.

So:

• بطانية = a blanket / blanket
• البطانية = the blanket
• سرير = a bed / bed
• السرير = the bed

In Levantine pronunciation, الـ is usually pronounced il- or el-, but it changes a little depending on the next letter.

For example:

• البطانية → il-baṭṭāniyye
  The l is pronounced because ب is a moon letter.
• السرير → is-srīr
  The l disappears into the s sound because س is a sun letter.

فوق means above, on top of, or over.

In this sentence, فوق السرير means something like:

• on top of the bed
• over the bed

This works naturally for a blanket, because a blanket usually lies on top of the bed.

على also often means on, and in many situations it could work too:

• حطيت البطانية على السرير

That would also mean I put the blanket on the bed.

The difference is mostly nuance:

• فوق emphasizes the idea of on top / over
• على is the more general on

قبل ما means before when followed by a verb.

So:

• قبل ما انام = before I sleep / before I go to sleep

This is a very common structure in Levantine:

• قبل ما روح = before I go
• قبل ما آكل = before I eat
• قبل ما نحكي = before we talk

Think of قبل ما + verb as a set pattern meaning before doing something.

Because after expressions like قبل ما, Levantine usually uses the verb without the بـ prefix.

Compare:

• بنام = I sleep / I am sleeping / I usually sleep
• قبل ما نام or spelling like قبل ما انام = before I sleep

So after قبل ما, the bare imperfect form is expected.

A useful rule of thumb:

• بـ often appears in ordinary present/habitual statements
• after certain particles and structures, it often disappears

Also, in casual Levantine writing, many people would write this as:

• قبل ما نام

even though you may also see انام written for clarity.

It can function like before I sleep literally, but in this sentence the overall meaning is usually understood from context.

Since the main verb حطيت is past, the whole sentence is often understood as:

• I put the blanket on the bed before I went to sleep

So even though the second verb looks like a present-type form, the time reference can be interpreted from the sentence as a whole.

This is very normal in Arabic. The clause after قبل ما does not have to match English tense in a one-to-one way.

A common pronunciation would be something like:

• ḥaṭṭēt il-baṭṭāniyye fōʔ is-srīr ʔabl ma nām

A few notes:

• ح is a breathy ḥ sound, not like normal English h
• ط is a heavy/emphatic t
• فوق is often fōʔ or foʔ
• قبل may sound like ʔabl or qabl, depending on the speaker
• السرير becomes is-srīr because of sun-letter assimilation

Regional pronunciations vary, but that version is very typical.

Yes. بطانية is a feminine noun, and in Levantine it is often pronounced:

• baṭṭāniyye

The written ending ـية often becomes -iyye in Levantine pronunciation.

So:

• البطانية → il-baṭṭāniyye

This is just the normal form of the word blanket; it is not agreeing with anything here in a special way.

The sentence as written is very natural:

• حطيت البطانية فوق السرير قبل ما انام

That is basically:

• I put
  • the blanket
    • on the bed
      • before I slept/went to sleep

But Arabic word order is flexible. For example, you could also say:

• قبل ما انام، حطيت البطانية فوق السرير

This puts more focus on before I slept.

You could also add أنا for emphasis:

• أنا حطيت البطانية فوق السرير قبل ما انام

So the original order is natural, but not the only possible one.