倍數詞分數詞都屬於限定詞

倍數詞 (Multiplicative Numbers)

once, twice, thrice, double, triple, four times, ...都是倍數詞。

I eat mealsonce
twice
three times
thrice
four times
a day.

once(一次,),twice(二次),thrice(三次)都是前限定詞(置於限定詞前)。
三次之後沒有特別的英文字。三次以後以 three times(三次), four times(四次), five times(五次) ...表示之。
"I eat meals three times a day." 要比 "I eat meals thrice a day." 來得通俗。
thrice 通常當副詞用,如: The actress was thrice nominated for an Oscar. 這女演員三次被提名奧斯卡。
或與其他字組合: a thrice-divorced woman 一個三次離婚的女人; thrice-weekly tutoring sessions 每週三次輔導課程。

This painkiller is double strength.

這種止痛藥有雙倍藥效。

double 是個倍數詞。

分數詞 (Fraction Numbers)

½a/one halfhalf an hour
a/one thirda third of a meter
two thirdstwo thirds of students
¼a/one quarterthree and a quarter cups
¾three quartersthree quarters of a liter
a/one eighthone eighth of a pound
three eighthsthree eighths of a second

分數詞是以基數詞為分子,序數詞為分母來表示。當分子多於1(one)時,分母要加 's'。例如:⅓ = one third; ⅔ = two thirds

Grammar



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