Hear, O Israel: The LORD our God [is] one LORD: (KJV Online) 1620
Hear O Israel: The Lord our God is one Lord: (International) 1915
Hear, O Israel! The Lord is our God, the Lord is one! (NASB) 1979
Listen O Israel: Jehovah our God is one Jehovah. (New World) 1984
Hear, O Israel: The Lord is our God, the Lord alone. (RSV) 1994
Of the above translations, the two older versions stand out as having in some way highlighted the verb "is" as an addition to make English sense of the Hebrew grammar. The actual text reads more like "Hear Israel Y'hovah Elohiym one Y'hovah." The "O" is added as another Anglaicism indicating that this was being addressed to a large congregation and the speaker was calling for the people's attention before he began the real message. Additionally, punctuation is added to indicate the flow of speech that any speaker would use, thus the comma, colon, exclamation mark, etc., after "Israel."
The word "Elohiym" should be rendered as "Gods" instead of "God" because it is actually the plural of "'El," the Hebrew word for one god. The word 'El is used in Genesis in certain places, but primarily the word Elohiym is used, especially when God is Himself doing the talking, such as the description of creation in the first two chapters. (There is also an odd shift from Abraham calling God 'El to God referring to Himself as Elohiym when He institutes His covenant with Abraham.)
The reason for including the Jehovah Witnesses version (an otherwise poor paraphrase with obvious errors in rendering to match egregious doctrinal errors) is that their version is ironically the only one that translates "Y'hovah" as Y'hovah or Jehovah, to use the German version of the divine name. In other words, the absolute worst Bible available for overall accuracy is in this case the most accurate, giving the name of the Hebrew God as He Himself has taken it, according to Exodus 3:14-15. There, Moses asks God specifically for Hi...