如何将二句话合并,重要是找好的二句话相同的名词.因为名词才是定语从句的先行词.那么二句话就用关系词链接.这样是这种题的灵魂
1.二句话中them和the wire是同一个名词（代词them代替名词wire）,所以wire就是定语从句的先行词.所以第一句话就是定语从句.
The machine were connected with the wire that/which were very old.(wire做定语从句的主语,所以用
which/that)
2.跟1的道理相同：The electricity is made from the panels which/that are broad.
3.The pilot told us stories about his travels.
We had dinner with him.
相同是pilot,所以做先行词.第一句就是定语从句.
We had dinner with him who told us stories about his travels.
4.The town looked very beautiful.
We had to circle around it in our plane.
相同的是it/town.所以做先行词.因此第一句是定语从句.
We had to circle around the town which looked very beautiful.
5.The globe measured over one meter across.
We stood around it.
相同的是globe/it,所以做先行词.因此第一句是定语从句.
We stood around the globe which/that measured over one meter across.
6.The satellite will be sent into space next year.
This rocket is being built.（原句有问题,rocket 应该是satelite)
相同的satellite.The satellite which is being built will be sent into space next year.
7.The photos are kept in that cupboard.
We found the information in them.
相同的是phote/them.所以是先行词.We found the information in the photos which/that are kept in that cupboard.
8.The weather report is being broadcast at seven o'clock..
We shall need the satellite pictures for it.
相同成分是the weather report/it.所以是先行词.
We shall need the satellite pictures for the weather report which/that is being broadcast at seven o'clock..
9.The country is on the other side of the world.
This news report is coming from it.
相同成分是country/it.所以是先行词.
This news report is coming from the country which/that is on the other side of the world.
10.Citizens of the USA need to show their passports.
They're going abroad.
相同成分是Citizens/they 所以是先行词：
Citizens of the USA who are going abroad need to show their passports.
本题得关键就是找好先行词（相同成分）,然后利用好关系代词的作用链接主句和从句.