2.Basic to any understanding 理解 of Canada in the 20 years after the Second World War is the country’s impressive 惊人的 population growth.
(倒装结构Basic to any understanding…is…)
要理解二战之后20年中的加拿大,就必须了解该国惊人的人口增长。
分句1:Basic to any understanding of Canada in the 20 years after the Second World War
分句2:is
分句3:the country’s impressive population growth
分句1,2,3共同构成倒装句,正常的语序应该是3,2,1,即:该句的正常语序是The country’s impressive population growth is basic to any understanding of Canada in the 20 years after the Second World War.
本句是一个简单句,只不过使用了倒装,谓语动词是is.