Question 1

Why does the sentence begin with إنها instead of the regular pronoun هي?

Accepted Answer

In Modern Standard Arabic, it is very common to start nominal sentences with the particle إن (inna) attached to a pronoun suffix. While إن historically means "indeed", here it simply functions as a strong sentence starter. Using إنها (inna-ha) sounds much more natural and stylistically proper in formal Arabic than starting with the independent pronoun هي (hiya).

Question 2

Why do we need أن between the two verbs?

Accepted Answer

In Arabic, you cannot stack two present tense verbs directly together like you can with modal verbs in English (can move). You must connect them using the particle أن (an), which translates roughly to "to" (she is able to move). This particle also requires the verb following it to be in the subjunctive mood, which means تحرك (tuharrik) takes a fatha "a" vowel at the end, becoming تحرّكَ (tuharrika).

Question 3

I recognize the root in تحرك (tuharrika). Is this a specific verb form?

Accepted Answer

Yes, this is a Form II verb, حرّك (harraka). It comes from the root for movement (h-r-k), which you might recognize from the noun حركة (haraka). Form II verbs often carry a causative meaning. So while a Form I verb might mean "to move" (oneself), this Form II verb means "to cause something else to move". She cannot cause her finger to move.

Question 4

What is the case of the word إصبعها (isba'aha) here?

Accepted Answer

The word is made up of إصبع (isba'), meaning finger, and the attached possessive pronoun ها (ha), meaning "her". Because the finger is the direct object receiving the action of the movement, the noun itself is in the accusative case. This means it takes a fatha "a" sound on the final root letter (the 'ayn), making the full pronunciation إصبعَها (isba'a-ha).

إنها لا تستطيع أن تحرك إصبعها.

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