2021屆中考英語語法數(shù)詞知識復(fù)習(xí)
（4）表示一百，一千，一百萬時需加上one或不定代詞a。如：1000 a thousand 1031 a thousand and thirty-one 1100 one thousand ,one hundred 1498 one thousand,four hundred and ninety-eight 比較數(shù)字的開頭多用不定代詞a（見前兩例），但在一個有百位數(shù)的數(shù)目前或在一個數(shù)目中間，則要用one（見后兩例）。
基數(shù)詞的位置
�。�1）位于another,all之后，如：can you have another two cakes? 你 還能吃2塊蛋糕嗎？ the boy lost all the five pencils last week.這孩子上周把5枝鉛筆全丟了。 �。�2）位于such和more之前，如：i can finish reading two such books in two days.兩天里我能讀完這樣的兩本書。please give me one more apple to eat.請再給我一個蘋果吃。 �。�3）可置于last,next,other之前或之后，如：his last two books are written in english.他的后兩本書是用英語寫的
巧記基數(shù)詞
基數(shù)詞不難記，找清規(guī)律很容易，十二以內(nèi)詞名異；
十三數(shù)到十九數(shù)去，后加-teen莫忘記。
二十 三十至九十，整十之后有-ty；
要說“幾十幾”，中間“-”號別丟棄，
hundred是“一百”，請你記住莫大意。
序數(shù)詞
序數(shù)詞的縮寫形式： first---1st second---2nd thirty-first---31st 1.first (1st) 2. second (2nd) 3. third (3rd) 4.fourth (4th) 5.fifth (5th) 6.sixth (6th) 7. seventh (7th) 8. eighth (8th) 9. ninth (9th) 10. tenth (10th) 11. eleventh (11th) 12. twelfth (12th) 13. thirteenth (13th) 14. fourteenth (14th) 15.fifteenfifteenth (15th) 16.sixteensixteenth (16th) 17.seventeen seventeenth (17th) 18.eighteen eighteenth (18th) 19.nineteen nineteenth (19th) 20.twenty twentieth (20th) 21.twenty-one twenty-fist (21st) 22.twenty-two twenty-second (22nd) 30.thirty thirtieth(30th) 40.forty fortieth (40th) 50.fifty fiftieth (50th) 60.sixty sixtieth (60th) 70.seventyseventieth (7th) 80.eighty eightieth (80th) 90.ninety ninetieth (90th) 100.a/one hundred one-hundredth (100th) 101.one hundred and one one hundred and first (101st) 1000.a/one thousand one thousandth (1000th) 1,000,000.a/one million one mi llionth (1,000,000th)
除了first, second, third以及和它們一起組成的高位序數(shù)詞以外，序數(shù)詞的構(gòu)成方法是在 相應(yīng)的基數(shù)詞之后加-th，但要注意fifth, eighth, twelfth等不規(guī)則拼法。twenty, thirty等在變 為序數(shù)詞時，要把y變成i, 再加-eth。
用法
一、整數(shù)的表示方法
1.表示二十以上的十位數(shù)，要在個位數(shù)與十位數(shù)之間加連字符號。表示百位數(shù)，要在 百位數(shù)與十位數(shù)之間(無十位數(shù)，則在百位數(shù)和個位數(shù)之間)加and。在美國英語中，and往 往省去。如： 68 ─ sixty-eight 156 ─ one/a hundred (and) fifty-six 602 ─ six hundred (and) two