expectation什么时候用复数什么时候用单数?请尽量详细。

2025-03-04 11:36:11
推荐回答(1个)
回答1:

expectation
n.
(1) 期待, 预期
(2) 期望, 指望
(3) 希望, 前景, 前程
(4) [常用复]期望的事物
(5) 【数】期望(值)

一般来说,表示预料、希望、期望值用单数形式,表示希望/期望(的事物)用复数形式。

习惯用语
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according to expectation
如所预料

against expectation
出乎预料

beyond (one's) expectation
出乎意料(之外), 较预期的更大[好]

contrary to (one's) expectation
与所预料的相反

fall short of sb. 's expectations
辜负某人的期望

not come up to sb. 's expectations
辜负某人的期望

have expectations
(1)
(与of 连用)对...抱有希望
(2)
(与from 连用)有继承遗产的希望

in expectation of
期望[待]

live up to sb.'s expectations
不辜负某人的期望

live up to meet sb.'s expectations
不辜负某人的期望

live up to answer sb.'s expectations
不辜负某人的期望

come up to sb.'s expectations
不辜负某人的期望

come up to meet sb.'s expectations
不辜负某人的期望

come up to answer sb.'s expectations
不辜负某人的期望

特殊用法
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conditional mathematical expectation
条件数学期望

consumer buying expectations
消费者希望的购买额

endurance expectation
估计使用期限

iterated fission expectation
迭代裂变预期值

mathematical expectation
数学的期望值

price expectation
价格预测, 预期价格

expectation for demand changes
对需求变动的预期

expectation of investment decisions
对投资决策的预期

expectation of life
(平均)预期寿命

expectation of life at birth
希望寿命

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