هو يؤجل رحلة المواصلة.

• هو = he
• يؤجل = postpones / is postponing
• رحلة = trip / journey
• المواصلة = the continuation / connection / onward travel depending on context

So grammatically, هو is the subject, يؤجل is the verb, and رحلة المواصلة is the thing being postponed.

You can absolutely say يؤجل رحلة المواصلة.

Arabic verbs already show the subject, and يؤجل by itself already tells you the subject is he (or sometimes it, if it refers to a masculine noun).

Adding هو makes the subject more explicit. It can sound like:

• simple clarification
• mild emphasis
• a topic-comment structure: As for him, he postpones...

So both are possible:

• يؤجل رحلة المواصلة = He postpones the connecting trip
• هو يؤجل رحلة المواصلة = He is postponing the connecting trip / He, specifically, postpones the connecting trip

In the imperfect tense, Arabic uses prefixes to show person.

Here, يـ at the beginning of يؤجل marks third person masculine singular in this form.

So:

• يؤجل = he postpones
• أؤجل = I postpone
• تؤجل = you postpone or she postpones depending on context
• نؤجل = we postpone

That is why هو is not strictly necessary.

It can mean either one.

The Arabic imperfect often covers both:

• simple present: he postpones
• present progressive: he is postponing

Arabic does not use a separate present-tense verb to be the way English does here. So يؤجل can naturally translate in more than one way depending on context.

يؤجل comes from the verb أجّل = to postpone / delay.

Its root is أ ج ل.

The verb أجّل is a Form II verb, and the imperfect is يؤجل.

A useful pattern to notice is:

• past: أجّل
• present/imperfect: يؤجل
• verbal noun: تأجيل = postponement

So if you know تأجيل, you can connect it to يؤجل.

It is pronounced roughly yu-ʾaj-jil.

A few details:

• the ء is a real hamza, a small catch in the throat
• the جّ is doubled because of the shadda
• with full vowels, it is يُؤَجِّلُ

So it is not one smooth syllable like yooajil. The hamza makes a break:

• yu
• ʾaj
• jil

Because this is an iḍāfa construction, often called a construct phrase.

In an iḍāfa:

• the first noun usually does not take ال
• the second noun can be definite, and that makes the whole phrase definite

So:

• رحلة المواصلة literally means something like the trip of the connection / onward journey
• the definiteness comes from المواصلة

That is why رحلة appears without ال here.

Yes.

It is:

• رحلة = first term of the iḍāfa
• المواصلة = second term of the iḍāfa

This structure often corresponds to English X of Y or a tightly linked noun phrase.

So رحلة المواصلة is literally something like:

• journey of connection
• onward trip
• connecting trip

The exact English wording depends on context, but grammatically it is an iḍāfa.

Because the first noun in an iḍāfa does not take tanwīn.

Normally, an indefinite noun like رحلة might appear with tanwīn in fully vocalized Arabic. But in an iḍāfa, that disappears.

So in full grammar terms:

• not رحلةٌ here
• but رحلةُ or رحلةَ depending on its role in the sentence

In this sentence it is the direct object, so with full endings it would be رحلةَ.

Fully vocalized, it would be:

هُوَ يُؤَجِّلُ رِحْلَةَ المُوَاصَلَةِ

Here is why:

• هُوَ = independent pronoun
• يُؤَجِّلُ = verb in the indicative, ending in -u
• رِحْلَةَ = direct object, so it is accusative
• المُوَاصَلَةِ = second term of the iḍāfa, so it is genitive

In normal Arabic writing, these short-vowel endings are usually omitted.

It is the direct object of the verb يؤجل.

The action is postponing, and the thing being postponed is رحلة المواصلة.

So if you ask:

• What is he postponing?

the answer is:

• رحلة المواصلة

That is why رحلة is accusative in a fully vocalized version.

Yes.

Arabic often allows more than one word order, depending on style and emphasis.

For example:

• هو يؤجل رحلة المواصلة
• يؤجل رحلة المواصلة

Both are normal.

A rough difference:

• يؤجل رحلة المواصلة is a straightforward verbal sentence
• هو يؤجل رحلة المواصلة makes he more explicit, and can sound slightly more emphatic or contrastive

For a learner, both are useful, but the version without هو is also very common because the verb already shows the subject.