VOA慢速英语:G-20 Nations Wonder: How Soon Is Too Soon to Cut Spending?

1.One of the big issues to discuss is how and when to reduce deficits and economic growth measures as conditions improve.

how and when...做表语。

表语是用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、形容词、副词、介词短语、不定式、动词的-ing、从句来充当，它常位于系动词（be, become, appear, seem,look,sound,feel,get,smell等词）之后。如果句子的表语也是由一个句子充当的,那么这个充当表语的句子就叫做表语从句。

2.But some experts say the world economy is still too weak for Europe's biggest country to reduce spending.

too to

1）too…to　 太…以至于…
　　He is too excited to speak.
　　他太激动了，说不出话来。
　 ---- Can I help you ? 需要我帮忙吗?
　 ---- Well, I'm afraid the box is too heavy for you to carry it, but thank you all the same.　不用了。这箱子太重，恐怕你搬不动。谢谢您。

2) 如在too前有否定词，则整个句子用否定词表达肯定， too 后那个词表达一种委婉含义，意 为"不太"。
　 It's never too late to mend.　(谚语)
　　　改过不嫌晚。

3)　当too 前面有only, all, but时，意思是：非常… 等于very。
　 I'm only too pleased to be able to help you. 我非常高兴能帮助你。
　 He was but too eager to get home. 他非常想回家。

3.But how many countries will join Britain is not clear.

how many countries will join Britain主语从句

在句中作主语的名词性从句称为主语从句， 主语从句所对应的谓语动词通常用第三人称单数的形式。为了整个句子的平衡， 主语从句经常后置， 并用it充当形式主语(此时， that引导的主语从句若不放在句首， 可以省略引导词that)。例如： What she did is not yet known. 她干了什么尚不清楚。// Whoever comes is welcome. 不论谁来都欢迎。// It is a pity (that) we haven’t contacted for ages. 很遗憾， 我们几年没联系了。// It has not been decided where the meeting is to be held. 在哪里开会还没决定。// It doesn’t matter

whether she will come or not. 她是否来这无关紧要。

4.So you ought to have global rules to try and deal with them.

ought to应该

I think you ought to be able to stand on your own legs.
我认为你应该能够自立了。

ought to和should的区别

1)一般说来，两者可替换，只是ought to语气稍重。如：

You ought to [should] go and see Mary sometime. 你应该什么时候去看看玛丽。

The train ought to [should] have arrived at six. 火车本应该6点钟到的。　

2)表示出于法令规则、行为准则、道德责任等客观情况而“应该”做某事时，一般应用ought to，若用should则含有个人意见，强调主观看法。如：

We ought to go and see Mary tomorrow, but I don’t think we will. 明天我们按理应该去看看玛丽，但是我认为我们不会去(此句不宜用should)。

3)在公告、须知或条例中，出于礼貌，常用should。如：

You should not run alongside the swimming-pool. 不准在游泳池边奔跑。