نصب الفعل المضارع

The given correct answer states that the word "تحقق" is a present verb (فعل مضارع) in the accusative case (منصوب) with a fatha vowel (بالفتحة).

The given sentence "ينبغي أن نعمل بجد" is a command or an imperative sentence, which requires the use of a specific grammatical structure. In Arabic, when giving a command, the word "أن" is followed by a verb in the subjunctive mood, which is the case in this sentence. Therefore, the correct answer is "حرف نصب" because it correctly identifies the function of the word "أن" in the sentence as a marker of the subjunctive mood.

The correct answer is "فعل مضارع منصوب بالفتحة" because the verb "يركب" is in the present tense and it is in the subjunctive mood, which is indicated by the fatha vowel on the last letter of the verb. This form of the verb is used to express a desire or intention, in this case, the man's intention to catch the train quickly.

The correct answer is "لن". In this sentence, the word "يهمل" (neglects) indicates that the student is currently neglecting his lessons. The word "لن" is used to express a future action or intention, indicating that the student will not neglect his lessons in the future. Therefore, "لن" is the appropriate particle to use in this sentence to convey the meaning that the student will no longer neglect his lessons.

The word "أنَّ" is not a word that belongs to the category of "harf al-nasb" (prepositions that indicate the accusative case). In Arabic grammar, "harf al-nasb" are used to show the accusative case or the direct object of a verb. Therefore, "أنَّ" does not fit into this category and is not considered one of the prepositions that indicate the accusative case.