/// <summary>
/// ''' Get the gerund value of a verb.
/// ''' </summary>
/// ''' <param name="str">present tense verb to make gerund.</param>
/// ''' <returns>String value of the gerund form of a verb.</returns>
/// ''' <remarks></remarks>
public static string getGerund(string str)
{
// str = str.ToLower
if (str.ToLower().Substring(str.Length - 1, 1) == "e")
{
str = str.Substring(0, str.Length - 1);
}
else if (str.Length > 2)
{
string e1, e2;
// get last letter
e1 = str.ToLower().Substring(str.Length - 1, 1);
// get second to last letter
e2 = str.ToLower().Substring(str.Length - 2, 1);
// if last letter is a consonant and the second to last is a vowel
if (Vowels.Contains(e2) && Consonants.Contains(e1))
{
// double last letter
str += e1;
}
}
return(str + "ing");
}
public static bool IsConsonant(Symbol symbol)
{
return(symbol.Value != null && symbol.Length == 1 && Consonants.Contains(char.ToUpper(symbol.Value[0])));
}