Breakdown of عندما رأيت الباب مفتوحا، أدركت ما حدث.
الal
the
ماmâ
what
بابbâbun
door
مفتوحmaftûhun
open
رأىra'â
to see
عندما'indamâ
when (not in questions)
أدركadraka
to realize
حدثhadatha
to happen
Questions & Answers about عندما رأيت الباب مفتوحا، أدركت ما حدث.
Why do we use a past tense verb (رأيت) right after عندما?
Because you are talking about a completed past event. Temporal words like عندما (when) are followed by the past tense when referring to the past. Since this lesson also covers لمّا, note that you could swap عندما for لمّا here without changing the meaning. However, لمّا is exclusively used with past tense verbs, while عندما can be used with the present tense for habits or future events.
Why is there an extra Alif at the end of مفتوحا?
That Alif marks the accusative case. Here, the word مفتوحا (open) describes the state the door was in when you saw it. In Arabic, a word describing the state or condition in which something happens is put into the accusative case, which adds an Alif to the end of indefinite words.
I learned that ماذا means 'what'. Why does this sentence use ما instead?
You use ماذا when asking a direct question. However, in this statement, 'what' is not a question; it means 'the thing that'. When 'what' acts as a connector between two parts of a sentence rather than asking a question, you must use ما.
The verb أدركت (I realized) starts with an Alif. Is that a prefix for the 'I' form?
No, the 'I' is indicated by the suffix ت at the very end. The Alif with a Hamza at the beginning belongs to the verb's pattern. This is a Form IV verb, and a key feature of Form IV is that the past tense base always starts with an أ.
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