be介詞短語
下面是本站小編整理的be介詞短語，希望對大家有幫助。
be介詞短語：
暗示"正在進行"這一動作，凡是用如：I am having a class now.(我正在上課。)但"正在進行"這一動作，還可以用"be+介詞短語"來暗示。常見的介詞短語類型有： be +at指導的介詞短語;be +in指導的介詞短語;be +on指導的介詞短語; be +under指導的介詞短語等。
Ⅰ+at指導的介詞短語 be at war(正在交戰)：
The two countries are at war now.兩國正在交戰。
(相當於：The two countries are waging a war now.)
be at work(正在工作)：Jim is at work on his car now.吉姆正在修自己的車。
(相當於：Jim is repairing his car now.)
be at peace(處於和平或舒適狀況)：
Thus Europe was at peace for the first time in ten years.
於是歐洲在十年往後第一次進入和平狀況。
be at table(正在吃飯)：When I arrived my friends were already at table.
當我達到時，我的伴侶們正在吃飯。
常見的這類結構還有：be at meeting正在開會;be at school正在上學;be at breakfast(lunch /supper)正在吃早(午/晚)飯;be at church正在做禮拜，等等。
Ⅱ+on指導的介詞短語
be on strike(正在罷工)：The electricity workers have been on strike for several weeks now.電力工人到今朝已經罷工好幾個禮拜了。(即此刻仍在罷工)
be on leave(正在休假)：Several soldiers are on leave in our village.幾位甲士正在我們村子裏休假。
be on the rise(正在上漲)：Prices of vegetables are on the rise.蔬菜價錢正在上漲。
常見的這類結構還有：be on a visit正在訪謁;be on the stumps處在堅苦之中;be on sale正在出售(美語作：削價出售)，等等。
Ⅲ+in指導的介詞短語 be in progress(正在進展)：
The building of the bridge is in progress.
這座橋樑正在施工中。(相當於：The bridge is being built now.)
be in trade(正在濁氚摻)：
Some people of this country are in gold and ivory trade.
這個國家的有些人正在做黃金和象牙生意。 be in fashion(風行)：
Long hair is very much in fashion now.現在，留長髮正時興。
be in trouble (處於困境/堅苦之中)：I am in great trouble. My little boy has fallen off a ladder and hurt himself.我趕上點麻煩，我的小兒子從梯子上失蹤下來，而且摔傷了。
常見的這類結構還有：be in danger處在危險中;be in operation正在運行; be in action在勾當(運轉/戰鬥)中;be in peril在危險之中;be in class正在上課;be in hospital 正在住院;be in office在執政;be in tears正在流淚;be in milk正在產奶;be in issue正在爭論之中; be in church正在做禮拜;等等。
Ⅳ +under指導的介詞短語
be under consideration(正在考慮之中)：The plan is under consideration by the Ministry of Education.教育部正在考慮這項打算。
be +under construction(正在建築中)：The new railway is still under construction.新鐵路仍在修建之中。
be +under discussion(正在談判之中)：That issue has no relation to the matter under discussion.阿誰問題和正在談判的事沒有關係。
常見的這類結構還有：be under treatment正在治療中;be under repair正在修理中，等等。
值得英語進修者注重的是
⑴儘管be+介詞短語能暗示"正在進行"這一意義，但它和be+此刻分詞所暗示的語僧衣義是有分歧的。前者着重事物所處的狀況，着重於靜態;後者着重事物的動態，集中暗示事物的動感。
⑵ 絕大部門這類結構，其名詞前都沒有冠詞，假如加一冠詞，意義將迥然不同。如：The Conservative Party is in office.保守黨在執政。The principal is now in the office.校長此刻在辦公室。英語進修者對上述分歧決不成失蹤以輕心。
