... 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 ... spoken English or in casual written English. It is not as common in formal English. 12 UNIT TWO: REDUCED CLAUSES It is possible in English to have complete or reduced adjective and adverb ... dearly in terms of both money and health. Air pollution causes buildings and machines to deteriorate. Our poisioned air damages crops, livestock, roads. And metals and forces huge cleaning bills...