导非限制性定语从句，修饰Lucy。

Ⅱ.单句改错

1.If only it not been for his invitation the other day, I should not be here now.

解析：考查虚拟语气。要不是前天他给我发的邀请信，我现在就不会在这里。从句时间状语the other day，表明从句是对过去的情况虚拟，故用过去完成时。

2.I had just about given myself up for lost suddenlya ship spotted me.

解析：考查状语从句。句意：正当我绝望时突然一艘船发现了我。考查句型had just about done...when...刚......突然这时......。

3.I have been read half of the English novel, and I'll try to finish it at the weekend.

解析：考查动词时态。句意：这本英文小说我已读了一半，这个周末我将尽力把它读完。根据语境表示已经读了一半，故用现在完成时。

4. the average age of the population increases, there are more and more old people to care for.

解析：考查状语从句。句意：随着人口平均年龄的增加，越来越多的老年人需要照顾。分析句子可知，as表示"随着"。

5.In many ways, the education system in the US is very different from in the UK.

解析：考查代词。句意：美国的教育体系与英国的教育体系在很多方面有差异。that替代the education system,it特指前面提到的同一事物。

6.More efforts, as reported, will be made in the years ahead the supply side structural reform.

解析：考查非谓语动词。句意：正如所报道的，在未来几年要作出更大的努力来加快供应方面的结构改革。to accelerate动词不定式作目的状语。

7.The temple back to the 4th century BC was designed by a famous architect.

解析：考查非谓语动词。句意：追溯到公元前4世纪的这座庙宇是由一位著名设计师设计的。分析句子结构，句子谓语是was designed by，dating是现在分词作定语，相当于which dated。