يضغط صديقي الطين طوال اليوم.

Because Arabic often prefers a verbal sentence pattern: verb + subject + object.

So:

يضغط صديقي الطين
= presses my friend the clay

In natural English, we reorder that as My friend presses the clay.

You could also say:

صديقي يضغط الطين طوال اليوم

That is also correct, but it puts more focus on my friend as the topic. Starting with the verb is a very normal neutral pattern in Arabic.

يضغط is the imperfect verb form of ضغط.

It can mean things like:

• he presses
• he is pressing
• he does press

Arabic imperfect verbs often cover both simple present and present progressive, and context tells you which sense is intended.

With طوال اليوم in the sentence, it often feels like presses / is pressing all day long.

Because the verb itself already includes that information.

يضغط tells you that the subject is:

• 3rd person
• masculine
• singular

So Arabic does not need to add a separate pronoun like هو unless there is some special emphasis or contrast.

In this sentence, صديقي comes right after the verb, which is a common place for the subject in Arabic verbal sentences.

So the structure is:

• يضغط = verb
• صديقي = subject
• الطين = object
• طوال اليوم = time expression

If the sentence were fully vowelled, the grammar would also support this, but in normal everyday writing the short case endings are usually not written.

The -ي means my.

So:

• صديق = friend
• صديقي = my friend

This -ي is a attached possessive pronoun. English uses a separate word, but Arabic usually attaches it directly to the noun.

Grammatically, yes, it is the subject, so it is nominative.

But with words ending in the my suffix -ي, the case ending is usually not visible in normal writing, and learners often just memorize the whole form صديقي.

So in practice, you recognize its role mostly from:

• word order
• sentence meaning
• context

Because it is the thing receiving the action of pressing.

So:

• صديقي = the one doing the action
• الطين = the thing being pressed

If full case vowels were written, the object would be in the accusative, pronounced الطينَ. In ordinary Arabic writing, that final short vowel is usually omitted.

Yes, literally it is the clay.

But Arabic uses the definite article in some places where English may sound more flexible. With a material or mass noun like طين:

• it can refer to a specific clay
• or to clay as a known material in context

So الطين may translate naturally as the clay or sometimes just clay, depending on context and style.

Because ط is a sun letter.

When الـ comes before a sun letter, the l sound is not pronounced. Instead, the next consonant is doubled in pronunciation.

So:

• written: الطين
• pronounced: aṭ-ṭīn

This happens in many Arabic words, but the spelling stays the same.

It is a time expression meaning throughout the day or all day long.

It functions like an adverbial phrase telling you when / for how long the action happens.

So in the sentence:

يضغط صديقي الطين طوال اليوم

the phrase طوال اليوم tells us that the pressing happens over the whole day.

Because طوال itself already works as a word meaning something like throughout or for the whole of.

So Arabic does not need an extra preposition here.

You can think of it as a built-in time expression:

• طوال اليوم = throughout the day
• طوال الليل = throughout the night

اليوم is connected to طوال in an iḍāfa-like relationship.

A simple learner-friendly way to think of it is:

• طوال = throughout / the whole length of
• اليوم = the day

So together they mean throughout the day.

Grammatically, اليوم is the second part after طوال, and it is in the genitive position.

The dictionary form is the past tense verb:

ضغط

It means pressed.

From that you get:

• ضغط = he pressed
• يضغط = he presses / is pressing

The root is:

ض غ ط

This root carries the basic idea of pressing or applying pressure.

You would change both the noun and the verb:

تضغط صديقتي الطين طوال اليوم

Changes:

• يضغط becomes تضغط because the subject is now feminine singular
• صديقي becomes صديقتي = my female friend

So verb agreement changes to match the feminine subject.

Yes, absolutely.

Both are grammatical:

• يضغط صديقي الطين طوال اليوم
• صديقي يضغط الطين طوال اليوم

The difference is mostly about focus and style:

• verb first is a very normal verbal-sentence pattern
• subject first makes my friend feel more like the topic

For this particular sentence, the meaning stays essentially the same.

Yes, especially these letters:

• ض in يضغط
• ط in الطين

Both are emphatic consonants, which means they are pronounced with a heavier, deeper quality than normal English d and t.

A rough guide:

• ط sounds like a heavier, backer t
• ض is often taught as a heavy d-like sound, though its exact pronunciation can vary by region

Also remember that الطين is pronounced aṭ-ṭīn, with the ṭ doubled in sound.