One of the beauties of Greek is that it is possible to indicate the expected answer to a question. A question prefaced by οὐ means the intended expected answer is “yes,” and μή shows that the expected answer is “no.” While we can do the same thing in English, it is pretty clunky and so most translations under-translate questions, not giving the expected answer.

Sometimes a Bible translator must alter the order of the Greek phrases so the English isn't confusing or miscommunicates. A good example is in 1 Thess 2:14. The majority of even the formal equivalent translations alter the phrase order, which illustrates why formal equivalent translations are not always transparent to the Greek.

This is a common question. People think the Greek New Testament says "brother," and translators therefore add to the Bible when they say "brother and sister." The fact of the matter is that the word "brother' is English, and the New Testament is written in Greek and says ἀδελφός. So the Bible, technically, does not say "brother." The real question is, what does ἀδελφός refer to and how do you convey the meaning in your culture?

One of the real values of knowing Greek is to be able to clearly see the sequencing of ideas. Greek is more than capable of lining up a series of prepositional, participial, infinitive (and other) phrases, since it is a paratactic language. This means it can place series of phrases side-by-side (παράταξις), without conjunctions to indicate the relationship between them.

Imperfects can be tricky to translate. Do you let the meaning of the word carry the aspect, is it a plain continuous idea, or one of the specialized uses of the imperfect such as the inceptive? Such is the challenge of translating imperfects.