高中英語 知識(shí)點(diǎn)大全14 at的用法

1、高中英語知識(shí)點(diǎn)大全（14）：at的用法1、at 詞組at (the) least 至少；最少。反義詞組為at (the)most至多；最多。Mr Smith looks older than his real age.In fact,he is at (the)most 40 years old.史密斯先生很顯老，實(shí)際上他最多40歲。Oh, really?I thought he was 50 years old at (the)least.噢，真的嗎？我以為他至少50歲了。at the beginning of 在初（開頭），可指時(shí)間與空間。如：at the beginning of ter

2、m 在學(xué)期開始at the beginning of the book 在那本書的開頭at the beginning 單獨(dú)用時(shí)間at first，也可說in the beginning.比較：at the end of 在末（盡頭）      at the end 在末尾處in the end 最終，同at last       in the middle of 在中期from beginning to end 從頭至尾at the doctors該結(jié)構(gòu)為介詞+名詞所有格，意為“在診

3、所”。所有格-s后一般接名詞，如her mothers bike ,但有時(shí)這個(gè)名詞可省略，主要表現(xiàn)在以下兩個(gè)方面：指一個(gè)企業(yè)，機(jī)構(gòu)，教堂，學(xué)校，醫(yī)院，家庭，理發(fā)店，店鋪時(shí)。如：She is at the hairdressers.為了避免重復(fù)，省略-s后的名詞。如：I have read some of Shaws plays,but none of Shakespeares.at the last moment 在最后關(guān)頭at the moment 此刻；正在那時(shí)for a moment片刻，一會(huì)兒for the moment 目前，暫時(shí)； in a moment立刻，馬上at t

4、he top of在的頂部，上方； at the top of a mountain在山頂；at the top of ones voice高聲地，尖聲地at war該介賓詞組意思是“處于戰(zhàn)爭或交戰(zhàn)狀態(tài)”。在句中常作表語。如：The U.S.A.and Iraq are at war again.2、at/ with/ through三個(gè)介詞都可表示原因，at表示聽到或看到的原因；with表示人體外部的原因；through 強(qiáng)調(diào)自身的原因。如：be sad at the news聽了這個(gè)消息而悲傷；be frightened at the sight看了那個(gè)情景而害怕；jump up with

5、 joy高興地跳了起來；turn red with anger氣得臉紅；shake with cold/fear凍得/害怕得發(fā)抖；with pleasure高興地；with pride 驕傲地；with satisfaction滿意地；make the mistake through his carelessness由于粗心而出錯(cuò)；be put into prison through no fault of his own 沒有任何罪過被關(guān)進(jìn)監(jiān)獄。應(yīng)用漢譯英聽到這個(gè)消息，全國人民處于悲哀之中。孩子們高興地跳了起來。由于大意他犯了這個(gè)錯(cuò)誤。Key:At the news, the whole c

6、ountry was in deep sorrow.The children jumped up with joy.He made the mistake through his carelessness.3、at work/ out of work/ after work這三個(gè)以work為中心詞的介詞短語，在意思和用法上均不相同。(1)at work表示“在工作、在上班”，作表語或狀語。例如：They are both at work today.今天他們倆都在上班。His father had an accident at work last week.上周的父親在工作時(shí)出了事故。(2)out of work表示“失業(yè)”，是介詞短語，相當(dāng)于lost ones job或be unemployed。例如：If you dont work hard, youll be out of work.如果你不好好工作就會(huì)失業(yè)。Youll be out of work if you keep coming late.如果你老是遲到，你會(huì)失業(yè)的。(3)after work表示“下班后”，作