看到一个 a+复数 的句子，有点不解

rushgoon

will be taking an incredible three and a half strideS per second
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( Q. a8 M% Z( S" q9 B8 E( g这句使用了一个a+复数名词的形式。请问应该怎么理解呢？

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lgmcw

The "correct" form is:
one hour and a half
a mile and a half
$ Z- ^. ~6 B2 l7 v5 |one ounce and a quarter

- R0 r% p, B1 H1 t! h. Q$ I. r: yHowever, in normal English usage, native speakers often say:
) y9 B- w# |/ u% X8 ?" [one and a half hours
one and a half miles
one and a quarter ounces

" U& v5 P4 v/ i& Q) ~Ref
& _" a5 `2 A5 b9 j7 w所以这里是 (three and a half) stides

鸭呼嘿

语言是如此复杂，以至于几乎每一条语法“规则”都有例外, 或者说简单的规则都有例外。


1 ]4 v1 E0 s5 B/ |! i不定冠词A(N) 一般至于单数可数名词连用，但是有时候是可以与复数可数名词连用的。

1 g# i$ M- {0 m# d5 p: dI'm a good twenty years younger than my wife. [ MY DREAM, oh God bless me]
I ate a good three hefty steaks this morning.】
- O3 [5 }4 J0 _7 S& i2 |  t; tI took a marvelous eighty points in the game.
2 Z7 j% ^1 t6 u' _They allowed us only a skimpy two days of vacation.
- ~! V" X% V( A- M* y& a: c3 W(I gave her another twenty minutes to finish her typing.)
...an incredible three and a half strides... [as in your example sentence]
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7 l9 Q! Z- \! M  O+ m" z形式：a(n) + adjective + number + plural nouns
9 T- J+ K* X1 h* z, j3 T意义：这种用法多多少少有强调、惊叹的意思。强调、惊叹的意思表现在那个形容词上面，而强调、惊叹的原因是那个数字。

4 Z! G) R) A) d0 X$ D' B6 `9 L【注：a good twenty/three... 中的good是个强调词(又如 a good many... 参见nice), 与上列其他的例子又有所不同，因此其后的名词前面仍可以有形容词，这个形容词才对应于上述“强调、惊叹的意思”所表现在的“那个形容词” ， 例如上举‘’hefty‘’.】
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这种用法虽说是“例外”，但也不算很罕见。
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Incidently, I'm afraid that there is a mistake in one of the sentences in the picture: the 'unawares' should have been 'unaware'.
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https://www.pdawiki.com/forum/forum.php?mod=viewthread&tid=31035&extra=page%3D1%26filter%3Dtypeid%26typeid%3D426
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一只考研狗

a + 速度
) E" g% ^: X$ [, I, K# Zthree and a half strideS per second指的是速度每秒3.5步，看作整体。
个人理解。

28836919

三个半，有什么问题？

三年半怎么说？
% U1 w6 h4 g$ j/ b: G$ T三米半怎么说？

leezzzz

three and a half，3.5啊，一秒3.5步

932524511

3.5, 在英语中大于一的都要复数～