BBC news 2010-11-23 加文本

1.The High Court upheld a ruling at the inquest that the families of the 52 people killed in the 7 July suicide attacks should be allowed to hear evidence given by agents from the domestic spy agency MI5.

这句话的主干是：The High Court upheld a ruling at the inquest。that引导的是ruling的同位语，说明详细内容。be allowed to被允许做某事。

2.The Italian Prime Minister Silvio Berlusconi promised to end the crisis, which has been blamed on a combination of underinvestment, poor management and mafia control of some of the dump sites.

这句话的主干是前半部分，which引导的是定语从句。

3.The Mexican government has advised migrants driving home from the United States for the winter holidays to form convoys for their own protection as they pass through Mexico.

advise sb to do sth建议某人做某事。

advise的用法

1)用作及物动词时，注意后接动名词 (不能直接跟不定式)或不定式的复合结构：

正：He advised leaving early. 他建议早点出发。

正：He advised us to leave early. 他建议我们早点出发。

误：He advised to leave early.

注意 advise 后接不定式复合结构时的被动语态形式 (不要与上面第一个句型混为一谈)：

He advised us to leave early. (主动式)

→We were advised to leave early. (被动式) 

2)其后若接 that 从句，通常要用虚拟语气 (should＋v. )：

He advised that we (should) leave early. 他建议我们早点出发。

We advised that he should leave early. 我们建议他早点出发。

He advised that everyone should buy one. 他建议每人买一个。