... and the language describing numbers are very important to understand when you read research articles, books or reports or when you discuss with colleagues. The language of numbers and the language ... 1,000,000,000 a/one hundred, thousand, million, billion c. 101 1,001 etc. a/one hundred and one, a/one thousand and one d. 201 2,001 etc. two hundred and one, two thousand and one 2. Ordinal Numbers ... have complete or reduced adjective and adverb clauses. The following charts list the structure for reduced adjective and adverb clauses and rules for how and when reduced forms can be used....