at a time和at one time的區(qū)別 英語詞匯的區(qū)別

at a time和at one time的區(qū)別：at a time 與 at one time 表示“一次;同時”的意思時,可以互換使用,沒有區(qū)別。at a time :一次；每次；在某時。at one time :曾經(jīng)，一度；同時(大多時候可以同at a time 替換）。

at a time和at one time的區(qū)別

1.at one time：這個詞組的意思是“曾經(jīng)；一度；有一段時時”。

例句1：At one time, walking across the room took all her strength.

曾經(jīng)有段時間，穿過這個房間得用盡她全部的力氣。

例句2：At one time, he had to walk to school everyday.

有一段時間他不得不步行去學校。

例句3：At one time most women made their own clothes, buying the cloth in small stores.

曾經(jīng)有段時間，大部分女人都在小店里買布料自己做衣服。

2.at a time：這個詞組的意思是“一次；每次”。

例句1：I can only carry two at a time.

我一次只能帶兩個。

例句2：Tom was unable to keep focused for more than an hour at a time.

湯姆無法一次集中注意力超過一個小時。

例句3：Wealth starts with a goal saving a dollar at a time.

財富始于一次存一美元的目標。

at a time造句

1、And at a time of economic hardship, it means forgoing jobs that we desperately need.

在經(jīng)濟困難時期，這意味著放棄我們極其需要的就業(yè)機會。

2、Pluck one at a time from the underneath of the eyebrow only.

采摘一步一個腳印，從底下的眉毛。

3、He checked them off one at a time as they came in.

當他們進來時，他一個一個檢查。

4、This is happening at a time when budget cuts are being considered in the United States.

與此同時，美國也正考慮削減預算。

5、You come into medicine and science at a time of radical transition.

這是一個醫(yī)學和科學發(fā)生徹底轉(zhuǎn)變的時代，你們趕上了。