Differentiating 1st-S./3rd-Pl. person in imp. ind. active

[quickly]

I am working through White's First Greek Book, and I have a problem. In Lesson VII, "Imperfect Indicative Active," the paradigm for this tense indicates that the suffix -ον plus the prefix ε serves to signal both the 3rd and 1st person. For each example, it gives the same conjugation for each verb in these cases. Same with the dual 2nd and 3rd person in the present indicative active: both have the suffix -ετον.

How am I to differentiate between these, with the exception of context? This site, which I have been using to check my answers, and which has usually been extremely faithful to what I produce, indicates that the correct translation of ηγον (circumflex and smooth breathing on η; I don't know how to type this in window) is "I was leading." But it appears that "they were leading" is also correct. On a simple translation exercise, where only the verb, without a context, is given, how do I differentiate between these two quantities and the dual in present indicative active?

[annis]

How am I to differentiate between these, with the exception of context?

Context is the only way to distinguish them.

indicates that the correct translation of ηγον (circumflex and smooth breathing on η; I don't know how to type this in window) is "I was leading." But it appears that "they were leading" is also correct. On a simple translation exercise, where only the verb, without a context, is given, how do I differentiate between these two quantities and the dual in present indicative active?

You don't, I'm afraid.

[quickly]

[jk0592]

I think that πέμπειν is infinitive.

[Bert]

....or "And Cyrus commanded the general send the garrison to the bridge."

Like jk0592 said, πέμπειν is infinitive. If you insert "to" before "send" in your translation, it makes sense.

But in the first and second attempt, I need garrison to take a definite article, which is lacking in the Greek, and the indefinite construction doesn't seem appropriate;

No need for the article. It is fine without it.

[quickly]

Interesting...I found the brief mention of the infinitive buried deep within the book. Now why would the third person singular present indicative with v-movable look exactly like the infinitive?

[annis]

Interesting...I found the brief mention of the infinitive buried deep within the book. Now why would the third person singular present indicative with v-movable look exactly like the infinitive?

An accident — there's no actual relationship between the infinitive and the 3sg active ending. The middle infinitive -σθαι looks a bit like the 2pl. middle ending, too, -σθε. The athematic infinitive is -μεν.

ν-movable is only for endings in -ε and -ι, not -ει.