كان بدي اشتري كيلو سكر كمان، بس نسيت المحفظة بالبيت.

بدي in Levantine means I want. When you put كان before it, the meaning shifts into the past: I wanted, I was going to, or I had in mind to.

In this sentence, كان بدي اشتري... gives the feeling of a past intention that did not happen.

بدي اشتري means I want to buy or I’m going to buy in a present or near-future sense.

Adding كان makes it past:

• بدي اشتري = I want to buy
• كان بدي اشتري = I wanted to buy / I was going to buy

So كان is what moves the intention into the past.

That is a very natural question. Many learners do hear كنت بدي for I wanted. In fact, كنت بدي is also very common and very natural in Levantine.

But كان بدي is also heard in colloquial speech as a fixed past-intention expression in some varieties and contexts. So the important thing to know is:

• كنت بدي = also common
• كان بدي = also used in spoken Levantine

This is one of those places where regional and conversational variation matters.

In Levantine, after بدي you normally use the verb directly in a bare imperfect form:

• بدي اشتري
• بدك تروح
• بدنا ناكل

There is no separate word like MSA أن here, and you do not keep the present-tense بـ prefix.

So:

• بدي اشتري = natural
• بدي بشتري = not natural

A good way to think of it is that بدي already sets up the meaning want to, so the next verb comes in the plain form.

That is normal in informal dialect writing. In Standard Arabic, you would expect a form like أشتري, but in Levantine text messages, subtitles, and casual writing, the hamza is often omitted.

So اشتري here is just casual dialect spelling. It does not mean a different verb.

Because Arabic commonly uses an iḍāfa construction: measure word + thing measured.

So:

• كيلو سكر = a kilo of sugar
• كاسة شاي = a cup of tea
• علبة جبنة = a box of cheese

English needs of, but Arabic usually does not. You can sometimes hear كيلو من السكر, but كيلو سكر is very common and natural.

كمان usually means also, too, as well, and sometimes more / another, depending on context.

In this sentence, it most naturally means something like also / too:

• I also wanted to buy a kilo of sugar

Depending on the wider context, it could also sound like another kilo of sugar. So كمان is flexible, and context decides the best English wording.

That placement is very natural in spoken Levantine. كمان often comes after the word or phrase it relates to, but spoken Arabic is fairly flexible.

So كيلو سكر كمان is normal. You may also hear:

• كمان كيلو سكر

Both can work, with slightly different emphasis.

Here بس means but.

This is a very common Levantine word. It can also mean only or just in other contexts, so learners often notice that it has more than one job.

In this sentence, though, it clearly means but:

• ..., بس نسيت... = ..., but I forgot...

In Arabic, especially in everyday speech, speakers often use the definite article الـ for personal belongings when the owner is obvious from context.

So:

• نسيت المحفظة naturally means I forgot my wallet

Arabic often does this with things closely associated with the speaker:

• غسلت إيدي = I washed my hands
• فتحت السيارة = I opened the car / my car, depending on context
• نسيت المحفظة = I forgot my wallet

You can say محفظتي, but it is more explicit.

Literally, it is I forgot the wallet at home.

But in natural English, we often say I left my wallet at home, because that is the practical result. Arabic commonly uses نسي in a situation where English may choose either forgot or left behind.

So both ideas are connected here:

• literal Arabic sense: I forgot the wallet at home
• natural English sense: I left my wallet at home

بالبيت is:

• بـ = in / at
• البيت = the house / home

Together:

• بالبيت = at home or in the house

In Levantine, البيت often means home, not just a physical house.

Yes. Both are possible.

• بالبيت = very common and compact in speech
• في البيت = also correct and natural

In many everyday Levantine sentences, بالبيت sounds especially conversational.

Several parts are clearly colloquial:

• بدي instead of MSA أريد
• بس instead of MSA لكن
• كمان instead of MSA أيضًا or كذلك
• casual spelling like اشتري instead of a more formal spelling

So this sentence sounds like everyday spoken Levantine, not formal written Arabic.

A simple approximate pronunciation is:

kaan biddi eshtiri kiilo sukkar kamaan, bas nsiit il-mahfaza bil-beet

A few notes:

• بدي sounds like biddi
• اشتري is often pronounced roughly eshtiri / eshteri
• نسيت is roughly nsiit
• بالبيت is roughly bil-beet

Exact pronunciation will vary a bit by country and city, which is very normal in Levantine Arabic.