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2） 在倒装结构中，谓语动词与后面的个主语一致

Blocking the open-sided porch， framed by the enveloping fog， stands a tall grave-faced policeman.

Just outside the ruins is a magnificent building surrounded by tall trees.

Although a great number of houses in that area are still in need of repair， there has been improvement in the facili

2. 主语带有（together/along）with， such as， accompanied by， as well as， no less than， except， besides， with， combined with， in addition to ， including， together with 等等附加成分，谓语的数不受附加成分的影响仍然与主语保持一致

Professor Taylor ， with six of his students ，is attending a conference in Boston organized to compare current practice in the United States with those of other nations.

The president of the college， together with the deans， is planning a conference for the purpose of laying down certain regulations. （1981年考研题）

3.关系代词做主语的定语从句中，谓语的数要与先行词一致。如：

Despite much research， there are still certain elements in the life cycle of the insect that are not fully understood.

（1996年考研题）

There are many valuable services which the public are willing to pay for， but which do not bring a return in money to the community.