How could he be" />

在英語語法中,被動語態是一種重要的表達方式,用于強調動作的接受者或結果而非動作的執行者。這種結構可以在不同的時態下使用,并且可以通過多種輔助動詞和結構來構建。被動語態不僅適用于基本的時態,還可以結合完成時態、情態動詞以及其他固定表達形式來使用。通過掌握這些規則,能夠更準確地使用英語進行表達。以下內容將介紹如何利用被動語態的不同形式來加強語法理解和應用。
<例句>
How could he be persuaded to stay?
怎么能勸說他留下?
<語句分析>
由can, could和be可構成被動結構,can, could 后的不定式可用完成形式,may,might或should等詞后的不定式也可用完成形式。有一些不定式結構如ought to, be going to等也可構成被動形式。有些成語動詞如及物動詞+副詞,動詞+介詞,動詞+副詞(名詞)+介詞等都可以有被動結構形式。
<觸類旁通>
(1) This can't have been done by a human being.
這不可能是人做的事情。
語法分析:can, could后的不定式可用完成形式。
(2) The road may be further widened.
這條路還可再拓寬一點。
語法分析:may, might可構成被動結構。
(3) They might have been put in the wrong place.
它們可能被放錯了地方。
語法分析:may, might后的不定式也可用完成形式。
(4) This ought to be done right away.
這事情應當馬上去做。
語法分析:ought to 的被動結構。
(5) When is the dam going to be completed?
水壩什么時候建成?
語法分析:be going to 構成的被動結構。
(6) Her illness was brought on by her worries.
她憂慮成疾。
語法分析:成語動詞的被動結構。
(7) We were assigned a lot of homework.
我們有很多家庭作業。
語法分析:雙賓動詞的被動結構。
<鞏固練習>
(1) This can't _____ done in a short time.
(2) She might _____ sent to work abroad.
(3) All these factors mustn't _____ neglected.
(4) This should _____ kept a secret.
(5) Does this need _____[be] mentioned?
(6) How many people are going to _____[send] there?
(7) This has to _____[do] promptly.
(8) Not a soul was _____[see].
(9) You are requested _____[present] at the ceremony.
<參考答案>
(1) be (2) be (3) be (4) be (5) to be (6) be sent (7) be done (8) to be seen (9) to be present