在线问og73 if从句中would和should

cissy

if从句中would和should的区别？

73. The British Admiralty and the War Office met in March 1892 to consider a possible Russian attempt to seize Constantinople and how they would have to act militarily to deal with them.

A.    how they would have to act militarily to deal with them
B.    how to deal with them if military action would be necessary
C.    what would be necessary militarily for dealing with such an event
D.    what military action would be necessary in order to deal with such an event
E.    the necessity of what kind of military action in order to take for dealing with it

In choices A and B, the pronoun them has no antecedent; furthermore, the if clause in B must take should rather than would.

我不太理解的是为什么解释中说B中的if 从句必须用should 而不用would。
请教nn们：if 条件从句中接should 和would 的区别。

thornbirdcfa

我只知道would多用于虚拟吧．should用于条件　not clear

dreadpower

张道真语法摘录：（if条件句中）过去时表示一个与现在或将来相反的假想情况
                              if he knew it, he would tell me
                              表示将来的也可用were+不定式
                              if she were to love him, she would marry him
                              虚拟将来时态，可用should
                              if she should know it , she will(would) tell me
                表示某种愿望，但是说话人不相信此愿望能实现，不相信主语有此愿望，用would
                 if he would pay me, we would be friends again

cissy

以下是引用dreadpower在2004-1-6 14:44:00的发言：
  虚拟将来时态，可用should
if she should know it , she will(would) tell me
表示某种愿望，但是说话人不相信此愿望能实现，不相信主语有此愿望，用would
  if he would pay me, we would be friends again

为什么在B选项里就非得用should 而不用would呢？还是有点懵懵懂懂！

cissy

我倒是看到有另外一种解释：should的用法
Used to express conditionality or contingency:
用于表示可能性或可能发生的事件：
If she should fall, then so would I.
如果她失败了，那我也会失败

cissy

by the way，张道真语法 有网络版吗？到哪里能找到？

snow_mountain

我的看法，would 表示的比较客观，而should 表明一种主观看法。假如...真的很必要的话

turtlechen

有一種句型是這樣說的：
It is+good(應該的),wrong(不當的),important(重要的),necessary(必須的)+that+{主詞}+should+{原形動詞},should可以省略。
    It is important that we (should) learn English well.
    學好英語是重要的。

necessary表必須，是為意志形容詞，常與should搭配

cissy

以下是引用bryony在2004-1-6 20:06:00的发言：
我的看法，would 表示的比较客观，而should 表明一种主观看法。假如...真的很必要的话

可是，看看上面的例句，我觉得would ,should 都很主观哟！
欢迎继续探讨！

dreadpower

以下是引用cissy在2004-1-6 18:15:00的发言：
为什么在B选项里就非得用should 而不用would呢？还是有点懵懵懂懂！

    B选项说how to deal with them if military action would be necessary

    总不能理解为有military action 这个愿望但是不能实现吧！

    只能理解为将来