72 The participle προσδραμών (prosdramōn) is regarded as attendant circumstance.
73 The words “to it” are not in the Greek text but are implied.
74 Grk “heard him”; the referent (the man) has been specified in the translation for clarity.
75 Grk “and he.” Because of the length of the Greek sentence, the conjunction καί (kai) has not been translated here. Instead a new English sentence is begun.
76 Grk “he said”; but since what follows is a question, it is better English style to translate the introduction to the question “he asked him.”

In other versions

So Philip ran to him and heard him reading Isaiah the prophet and asked, “Do you understand what you are reading?”

Then Philip ran up to the chariot and heard the man reading Isaiah the prophet. “Do you understand what you are reading?” Philip asked.

When Philip ran up to it, he heard him reading the prophet Isaiah, and said, “Do you understand what you’re reading?”

Philip ran over and heard the man reading from the prophet Isaiah. Philip asked, “Do you understand what you are reading?”

So Philip ran up to it and heard him reading aloud Isaiah the prophet and said, “So then, do you understand what you are reading?”

And Philip ran thither to him, and heard him read the prophet Esaias, and said, Understandest thou what thou readest?

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