I need to define a function that translates an sentence from present to past.
A. put all words in lower case and omit all punctuation
B. Plural and singular verbs should be recognized
C. verbs ending in "y" change to "ied"
D. verbs ending in "e" add "d"
E. other verb stems add "ed"
F. treat words as regular verbs if their stems are in regular verb set
G treat words as irregular verbs if their are irregular verb dictionary
I also have 2 List
1. regular verb
2. irregular verb
My problem is this problem seams complex, so i am a little confused. If someone could show me how to get started that would be great. If anyone has a webpage that could walk me through this let me know.