2017年職稱英語考試綜合類語法9

字號:

(三)序數(shù)詞:表示順序的數(shù)詞叫序數(shù)詞。
    1.英語的序數(shù)詞基本變法:
    (1) 一般在基數(shù)詞后加th
    (2)-ve結(jié)尾的改為-fth
    (3)-ty結(jié)尾的改為-tieth
    (4)熟記特殊詞
    2.注:(1)兩位以上的序數(shù)詞僅個位數(shù)部分用序數(shù)詞,其余部分仍用基數(shù)詞。如:thirty-sixth,
    (2) 使用序數(shù)詞時一般加定冠詞the. 如:I’m in the third grade.
    (3) 序數(shù)詞作“幾分之幾”講時,有復(fù)數(shù)形式。如:1/5→one fifth ; 2/3→ two thirds ; 4/7→ four sevenths ; 1/2→ a half ; 1/4→a quarter ; 3/4→ three quarters ; 50%→ fifty hundredths ( fifty per cent).
    (四)數(shù)詞的用法:
    1.表示年份:2002: twenty thousand and two ; 1976 : nineteen seventy-six.
    2.表示日期: 12月1日: Dec.1st或the first of December;2002年11月8日: Nov. 8th, 2002.
    3.表示時刻: 5:15→ five fifteen或a quarter past five ; 8:30→ eight thirty或half past eight ; 10:45→ ten forty-five或a quarter to eleven.
    4.表示編號:Room 105→Room one 0 five; Bus No.13→Bus Number Thirteen; P.5→Page Five; Tel.No.7658659→Telephone Number seven-six-five-eight-six-five-nine
    5.小數(shù)的讀法:5.7→ five point seven, 0.16 →zero point one six.
    6.“半”的表達(dá): 1/2→half, 半小時→half an hour, 1.5小時→one and a half hours或one hour and a half.
    7.序數(shù)詞前面加the時,表示順序,加a/an時表示“再一、又一”。如:The third lesson is rather difficult.(第三課相當(dāng)難)/ Shall we read the text a third time?(我們把課文讀第三遍,好嗎?)