题目
Part VII. Grammar and Structure (15 points)Directions: There are 15 incomplete sentences. For each sentence there are four choices marked A, B, C and D. Please choose the best answer.(单选题 1分) People used to believe that dirt spontaneously ____ disease.()
Part VII. Grammar and Structure (15 points)
Directions: There are 15 incomplete sentences. For each sentence there are four choices marked A, B, C and D. Please choose the best answer.
(单选题 1分) People used to believe that dirt spontaneously ____ disease.()
题目解答
答案
本题考察“used to”结构及动词形式的选择。主句“used to”表过去，从句需用一般过去式。“spontaneously”修饰“generated”，表“自发产生”。完整句子为：
People used to believe that dirt spontaneously generated disease.
答案：generated
解析
本题考查“used to”结构以及动词形式的选择。解题思路如下：
- 首先明确“used to”这个短语的用法，“used to do sth.”表示过去常常做某事，强调过去的习惯或状态，而现在已经不再如此。在本题中，“People used to believe”表明人们过去持有某种观点，这是一个过去的时间背景。
- 当主句是“used to”引导的表示过去的句子时，从句通常也需要使用一般过去式来保持时态的一致性，因为从句描述的内容也是过去人们所相信的情况。
- 分析句子“People used to believe that dirt spontaneously ____ disease”，这里需要一个动词来表示“产生”的意思，“generate”有“产生、生成”的含义，其过去式是“generated”。“spontaneously”是副词，用来修饰动词“generated”，表示“自发地”。所以横线处应填入“generated”，句子“People used to believe that dirt spontaneously generated disease”的意思是“人们过去常常认为污垢会自发地产生疾病”。