هذا السؤال غير سهل، ولذلك أحتاج إلى مساعدة.

Because السؤال (question) is a masculine noun in Arabic, so it takes the masculine demonstrative هذا (this).

• هذا = this (masculine singular)
• هذه = this (feminine singular)

So:

• هذا السؤال = this question
• not هذه السؤال

Even though some Arabic words may end in sounds that feel unusual to English speakers, the grammatical gender is what matters.

In Modern Standard Arabic, the usual order is:

demonstrative + noun

So:

• هذا السؤال = literally this the-question

This is the normal way to say this question in MSA.

Notice that the noun usually stays definite with ال after هذا:

• هذا الكتاب
• هذه المشكلة
• هذا السؤال

That is different from English, where we do not say this the question.

Because after a demonstrative like هذا, Arabic normally uses a definite noun.

So:

• سؤال = a question
• السؤال = the question

And:

• هذا السؤال = this question

In MSA, هذا سؤال is generally not the standard form for this question. The normal pattern is هذا + definite noun.

Here, غير means not or non-, so:

• غير سهل = not easy

In this sentence:

• هذا السؤال غير سهل = This question is not easy

A very literal way to think about it is:

• غير = other than / not
• غير سهل = not easy

It is a very common MSA way to express negation with adjectives.

Both ideas can express not easy, but غير سهل is a very common and natural descriptive structure in formal Arabic.

Compare:

• هذا السؤال غير سهل = This question is not easy
• هذا السؤال ليس سهلًا = This question is not easy

Both are understandable, but غير + adjective is often neat and elegant in formal writing.

A small grammar point:

• غير is followed by a noun/adjective in a genitive relationship
• With full vowels, it would be غيرُ سهلٍ

In normal unvocalized Arabic writing, those endings are not shown, so you just see غير سهل.

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

So:

• هذا السؤال غير سهل
• literally: this question not easy
• natural English: This question is not easy

This is completely normal in Arabic.

But in past or future contexts, Arabic would use different verbal forms, for example:

• كان السؤال صعبًا = The question was difficult

ولذلك means and therefore, and so, or for that reason.

It is made of parts:

• و = and
• لِ = for / because of
• ذلك = that

So the whole expression gives the sense of:

• and because of that
• and therefore

In the sentence:

• هذا السؤال غير سهل، ولذلك أحتاج إلى مساعدة.
• This question is not easy, and therefore I need help.

It is a common connector in formal Arabic.

Yes, in many contexts so is a perfectly natural English translation.

For example:

• هذا السؤال غير سهل، ولذلك أحتاج إلى مساعدة.
• This question is not easy, so I need help.

But ولذلك is a bit more formal than casual English so. Depending on context, it can also be translated as:

• therefore
• for that reason
• thus

Because Arabic verbs already show the subject.

أحتاج means:

• I need

The أ at the beginning marks first person singular in the present tense.

So the pronoun أنا is usually unnecessary unless you want emphasis or contrast.

Compare:

• أحتاج إلى مساعدة = I need help
• أنا أحتاج إلى مساعدة = I need help / I need help

The second version adds emphasis.

Because the verb احتاج / يحتاج in MSA normally takes the preposition إلى.

So the pattern is:

• يحتاج إلى... = he needs...
• أحتاج إلى... = I need...

Examples:

• أحتاج إلى وقت = I need time
• نحتاج إلى حل = We need a solution
• أحتاج إلى مساعدة = I need help

English says need help directly, but Arabic usually says something closer to need to/for help with إلى.

In standard MSA, the normal and preferred form is:

• أحتاج إلى مساعدة

Dropping إلى may occur in some dialects or less formal usage, but for Modern Standard Arabic, learners should use احتاج إلى.

So if you are writing or speaking MSA, keep the preposition.

Because the sentence means help in a general sense, not a specific previously known help.

So:

• مساعدة = help / some help / assistance
• المساعدة = the help / the assistance

In this context, Arabic naturally uses the indefinite noun:

• أحتاج إلى مساعدة = I need help

If you said أحتاج إلى المساعدة, it would sound more like I need the help or I need that specific help.

With full vowel markings, the sentence would be:

هٰذَا السُّؤَالُ غَيْرُ سَهْلٍ، وَلِذٰلِكَ أَحْتَاجُ إِلَى مُسَاعَدَةٍ.

A learner does not need to produce all these endings all the time, but they explain the grammar:

• السؤالُ: nominative, because it is the subject/topic
• غيرُ: nominative, because it is part of the predicate
• سهلٍ: genitive after غير
• أحتاجُ: indicative present tense
• مساعدةٍ: genitive after إلى

In everyday printed Arabic, these short vowels are usually omitted.

Yes. سهل means easy, and here it describes السؤال.

So:

• سهل = easy
• غير سهل = not easy

In English, we say This question is not easy. In Arabic, the adjective comes as part of the predicate after the noun phrase:

• هذا السؤال غير سهل

It has two parts:

1. هذا السؤال غير سهل

   • هذا السؤال = this question
   • غير سهل = not easy

2. ولذلك أحتاج إلى مساعدة

   • ولذلك = therefore / so
   • أحتاج = I need
   • إلى مساعدة = help

So the structure is:

statement + result

• This question is not easy, so I need help.

The comma is helpful for reading, but it is not the main thing that creates the meaning. The connector ولذلك already shows the relationship between the two parts.

So even without the comma, the sentence would still be understandable:

• هذا السؤال غير سهل ولذلك أحتاج إلى مساعدة

However, using the comma makes the sentence clearer and more natural in writing.