BBC news 2010-12-17 加文本

1.He said that while Mr Assange might have some incentive and the means to flee, were he to do so, his reputation would be diminished in the eyes of his supporters.

were he to do so虚拟语气

虚拟条件句的从句部分含有were， should， 或had时， 可省略if，再把were， should或had 移到从句的句首，实行倒装。例如：

　　Were they here now， they could help us. =If they were here now， they could help us.他们现在在的话，就会帮助我们了。

　　Had you come earlier， you would have met him. =If you had come earlier， you would have met him.你来得早一点，就碰到他了。

　　Should it rain， the crops would be saved. =Were it to rain， the crops would be saved.假如下雨，庄稼就有救了。

　　注意：在虚拟语气的从句中，动词'be'的过去时态一律用"were"，不用was，即在从句中be用were代替。例如：

　　If I were you， I would go to look for him. 如果我是你，就会去找他。

　　If he were here， everything would be all right. 如果他在这儿，一切都会好的。

2.European Union leaders meeting at a summit in Brussels have agreed to make changes to the Lisbon Treaty to enable them to set up a permanent rescue mechanism to help eurozone countries in financial difficulty.

这句话的主干是：European Union leaders have agreed to make changes...meeting at a summit in Brussels是现在分词作后置定语，修饰leaders。to enable them表示目的。

3.The European Parliament has called for European governments to freeze the assets of Russian officials accused of involvement in the death in prison of a Russian lawyer, Sergei Magnitsky.

这句话的主干是：The European Parliament has called for European governments to freeze...accused of involvement是过去分词做后置定语，修饰officials。