5.4 含蓄条件句
虚拟条件句中的条件从句有时不表出来，只暗含在上下文中，这种句子叫做含蓄条件句。含蓄条件句大体有三种情况。
1) 条件暗含在短语中。
But for your help we couldn’t have succeeded in the experiment.
如果没有你的帮助，我们的实验是不会成功的。(暗含在分词短词butfor your help)
What would I have done without you?
如没有你，我会怎么办呢？(条件暗含在介词短语without you 中)
It would be easier to do it this way. 这样做会比较容易。(条件暗含在不定式短语 to do it this way中)
This same thing, happening in wartime, amount to disaster.
同样的事，如发生在战时，就会酿成大祸。(条件暗含在分词短语happening in wartime 中)
He must have the strength of a hippopotamus, or he never could have vanquishedthat great beast.
他一定是力大如河马，否则他绝不会击败那只庞大的野兽。(暗含条件是连词or)
Alone, he would have been terrified. 如是单独一人，他是会感到害怕的。(暗含条件是alone)
2) 条件暗含在上下文中。
You might stay here forever. 你可以永远待在这儿。(可能暗含if you wanted to)
We would have succeeded. 我们本来是会成功的。(可能暗含if we had kept trying) Your reputation would be ruined. 你的名誉会败坏的。(可能暗含 if you should accept it)
3) 在不少情况下，虚拟式已变成习惯说法，很难找出其暗含的条件。
You wouldn’t know. 你不会知道。
I would like to come. 我愿意来。
