46) This movement,driven by powerful and diverse motivations, built a nation out of a wilderness and, by its nature, shaped the character and destiny of an uncharted continent.
47)The United States is the product of two principal forces-the immigration of European people with their varied ideas, customs, and national characteristics and the impact of a new country which modified these traits.
48)But the force of geographic conditions peculiar to America, the interplay of the varied national groups upon one another, and the sheer difficulty of maintaining old-world ways in a raw, new continent caused significant changes.
49)The first shiploads of immigrants bound for the territory which is now the United States crossed the Atlantic more than a hundred years after the 15th- and -16th-century explorations of North American.
50)The virgin forest with its richness and variety of trees was a real treasure-house which extended from Maine all the way down to Georgia.
【題目解析】
46)本句重點詞語:driven by 在…的驅動下,by its nature 從本質上,它的性質,
shape做動詞當"塑造"講。本句是一個由and連接的并列句,其中driven by powerful and diverse motivations,和by its nature為插入語結構。
47)本句重點詞語:principle做形容詞,意為"主要的", national characteristics 意為"民族特色,特點",modify意為"修改,改變"。多次考察了of和with引導的后置定語的翻譯,前三小句為并列結構表原因,第四小句為句子主干。
48)本句重點詞語:peculiar to,意為"特殊的,特有的", national groups意為"民族",固定搭配in a raw 意為"原始的",sheer意為"完全的,純粹的"。
49)本句重點詞語:immigrant"移民", explorations"探索",bound for "駛往,開往"。其中,which is now the United States為定語從句修飾限定前文的the territory。
50)本句重點詞語:treasure-house"寶庫",all the way down to "一直",extend from…to…"從…延伸到…。其中with引導的介詞短語做后置定語,which extended from Maine all the way down to Georgia為定語從句修飾前面的treasure-house。