BBC news 2009-06-02 加文本

1.Brazilian, French, Spanish and Senegalese aircraft have been searching for the plane.

【参考翻译】巴西，法国，西班牙和塞内加尔队飞机都在搜索失踪飞机。

【语法分析】have been searching现在完成进行时

现在完成进行时表示某动作从过去某个时间开始，一直延续到现在，并且还有可能持续下去。如：

We have been waiting for him for two hours. 我们等他等了两个小时。

现在完成进行时由“have /has been + 现在分词”构成。

现在完成进行时所用的时间状语：this month / week / year, these days, recently / lately, in the past few + 时间段, since +时间点, for + 时间段。如：

They have been building the bridge for two month. 两个月来他们一直在修桥。

They have been planting trees this month. 这个月来他们一直在植树。

2.President Obama has defended his decision to use billions of dollars of public money to save General Motors and Chrysler from collapse.

【参考翻译】奥巴马总统为其利用公众数十亿美元的资金拯救通用和克莱斯勒免于倒闭的决定作出辩护。

【语法分析】to use不定式做后置定语

很多特定的名词后可用不定式做定语，这样的名词常用的有：way，time，reason，chance，opportunity，need，wish，effort，right，ambition等。

如：It's time for you to get up and go to school.你该起床去上学了。

There is no reason to doubt his word.没有理由怀疑他的话。

They have now an opportunity to go abroad to study further.他们现在有机会出国深造。