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學(xué)習(xí)啦 > 學(xué)習(xí)英語(yǔ) > 英語(yǔ)單詞 > be to do的正確用法

be to do的正確用法

時(shí)間: 燕妮639 分享

be to do的正確用法

  在英語(yǔ)里,“ be + to do ”結(jié)構(gòu)可用來(lái)表示將來(lái)時(shí)間,下面是學(xué)習(xí)啦小編整理的一些關(guān)于be to do的正確用法,歡迎大家閱讀!

  be to do sth 的正確用法

  1、be + to do表示“想,打算”,相當(dāng)于intend, want。

  If we are to be there before ten, we’ll have to go now.

  如果我們要在十點(diǎn)前到,我們現(xiàn)在就得走。

  以下是be to do sth. 作情態(tài)助動(dòng)詞的用法。

  2、be + to do 表示按計(jì)劃或安排要做的事。

  When are you to leave for home?

  你什么時(shí)候回家?

  She is to be married next month.

  她將于下個(gè)月結(jié)婚。

  The Queen is to visit Japan in a week’s time.

  女王將于一周后訪問(wèn)日本。

  這種結(jié)構(gòu)也可用于過(guò)去。was / were to do sth. 表示曾經(jīng)計(jì)劃要做的事,但并說(shuō)明計(jì)劃是否被執(zhí)行了,所以也可表示曾經(jīng)計(jì)劃但未有實(shí)現(xiàn)的事。例如:

  I felt nervous because I was soon to leave home for the first time.

  我感到很緊張,因?yàn)槲液芸炀鸵状坞x開(kāi)家了。

  They said goodbye, little knowing that they were never to meet again.

  他們告了別,不知道以后再也不會(huì)見(jiàn)面了。

  We were to have told you, but you were not in.

  我們本來(lái)想告訴你的,但是你不在家。

  3、be + to do 表示“可以,可能”,相當(dāng)于may, can。

  The news is to be found in the evening paper.

  這條消息可以在晚報(bào)上見(jiàn)到。

  Such people are to be found everywhere.

  這種人到處都有。

  She is nowhere to be found.

  在哪里也找不著她。

  4、be + to do 表示“應(yīng)該”,相當(dāng)于should, ought to。

  You are to report to the police.

  你應(yīng)該報(bào)警。

  What is to be done?

  應(yīng)該怎么辦呢?

  5、be + to do 表示“必須”,相當(dāng)于must, have to。

  The letter is to be handed to him in person.

  這封信必須親手交給他。

  You are to do your homework before you watch TV.

  看電視之前你得先做完作業(yè)。

  6、be + to do 用于否定句,表示“禁止”,相當(dāng)于mustn’t。

  The books in this room are not to be taken outside.

  這個(gè)室內(nèi)的書(shū)籍不得帶出室外。

  You are not to smoke in the reading-room.

  你不可以在閱覽室里吸煙。

  7、be + to do 用于第一人稱疑問(wèn)句,表示征求對(duì)方意見(jiàn)。

  Am I to go on with the work?

  要我繼續(xù)完成這項(xiàng)工作嗎?

  What are we to do next?

  我們下一步該怎么辦?

  8、在虛擬語(yǔ)氣中,不論什么人稱都用were to do sth. 表示對(duì)未來(lái)的假設(shè)。

  If I were to tell you that I killed him, would you believe me?

  要是我告訴你是我殺了他,你會(huì)相信嗎?

  Even if the sun were to rise in the west, I would never do such a thing.

  即使太陽(yáng)從西邊出來(lái),我也決不做這種事。

  9、還有兩個(gè)常用的 be to do sth. 結(jié)構(gòu):be to blame(該受責(zé)備,對(duì)某壞事應(yīng)負(fù)責(zé)任),be to let(待出租)。兩種結(jié)構(gòu)中,用不定式的主動(dòng)形式表示被動(dòng)含義。

  Which driver is to blame for the accident?

  這事故是哪個(gè)司機(jī)的責(zé)任?

  This house is to let.

  這房子要出租。

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