once什么意思(at)
【2019年10月26日 百天英语-Day95】
【华东师范大学-林森撰写】
今日阅读:②The city at one time must have been prosperous, for it enjoyed a high level of civilization. Houses -- often three storeys high -- were built of stone. They had large rooms with beautifully decorated walls. ③The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
节选《新概念英语3 An unknown goddess》
【生词】
prosperous adj.繁荣的什意思
storey n.楼层
昨日复习提要:昨天学习了主要学习了两点, ①some time, sometime, sometimes的什意思不同,尤其是当sometime做形容词表示“以前的”时,大家都不太熟悉这个用法。什意思②discovery表示发现,什意思有时候也作发现物讲,什意思常与make连用。什意思
昨天文章如下:
sometime, some time, sometimes的什意思区别与用法,discovery发现物
今日文章解读:The city at one time must have been prosperous, for it enjoyed a high level of civilization. Houses -- often three storeys high -- were built of stone. They had large rooms with beautifully decorated walls.
这座古城肯定一度很繁荣,什意思因为它曾享有高度的什意思文明,房子一般有3层楼高,什意思用石块修建。什意思里面房间很大,什意思墙壁装饰华丽。什意思
(1)at one time的什意思含义详解at one time的意思是“一度”“曾经”,这是什意思一个常用搭配,需要注意的是,如果把one换成a,虽然都是表示“一个”,但是含义是不同的。
①at a time的意思是“每次”或“一次”,比如:
Focus on one subject at a time.
每次集中精力在一件事情上。
②at one time表示“曾经”,“曾经”这个词在中文里就能看出其使用的场合应该是表示过去,所以当at one time出现时,句子应该是过去时。比如:The song had a great vogue at one time. 这首歌曾风行一时。
③同样表示“曾经”含义的单词once
I once went there with my brother.
我曾经同我弟弟去过那里。
虽然注意区别在于,once表示曾经时,词性为副词,用来修饰动词。而at one time是介词短语,位置相对较自由。
④one与ones
与once发音相似的ones,可以作代词来表示单数名词的复数。比如:
There were a number of well-known scientists in the last century, but Albert Einstein was one of the more interesting ones. 上世纪有许多著名科学家,但是爱因斯坦是其中较为有影响的一个。
在这个句子中ones就是来指代前面提到的scientists,因为是复数,所以原来由one来指代单数的情况下多了s。
(2)带破折号的插入语Houses -- often three storeys high -- were built of stone. 房子一般有3层楼高,用石块修建。
这句话不知道大家有没有注意到一点,当我把破折号内的内容去掉的时候就是这样的。
Houses were built of stone.房子是由石头建成的。
句子完整,语义充分,这就是插入语的用法。在之前的内容中,有讲到过两个逗号之前的插入语使用情况。插入语如果是在考试过程中,是可以完全跳过的。平时阅读时,多看看别人的用法,用自己写作时候也是大有裨益。阅读中虽然不推荐看,但写作时还是很有必要用上一句的。
【明日预报】摘要:新概念英语3的第3课An unknown goddess,无名女神。明天主要内容有被动态作修饰的用法和which引导的从句用法。还没有关注的请关注《百天英语》,每天更新,全是干货。