In Affix^x

Hello Affix, The word "forest" is singular. One forest. So, "is" is the correct word here. Two thirds of the forest is pine trees. I know it might sound a bit wrong because "pine trees" is plural. But I think "is" is correct. Maybe somebody will correct me though. :o)

Hi, this is just a cut & paste job from various internet resources: 1 The Concise Oxford Dictionary of English Etymology 2 The Oxford Dictionary of English Grammar 3 Concise Oxford Companion to the English Language 4 The Concise Oxford Dictionary of Linguistics (7 parts) 5 Pocket Fowler's Modern...