Lucan wrote:Thanks for your help. It appears that I've just been missing out several of the steps involved- namely elongating the vowel in contracted forms and then adding the sigma, even if the verb itself ends in [face=spionic]l m n r[/face]. But despite this there still seem to be some oddities that I think I'll have to pick up these as I go along.
Does your book mention principal parts? The future active & middle is formed from a different principal part than the present active & middle. For regular verbs there are rules for deriving the second principal part from the first, but (as you know) not all verbs are regular, so in principle there is no sure way to predict what the future is. You just have to know the princpal parts of the verb.
Just as in English, there's no way to predict that the past tense of bring
. You just have to know that.
If someone asks "Why does [face=SPIonic]bai/nw
[/face] become [face=SPIonic]bh/somai
[/face] in the future," the simple answer is, "because [face=SPIonic]bh/somai
[/face] is the second principle part."
You can find probably find at least a partial list of principal parts in your book.