单选题
12.( ) anything wrong with the machine?
A
Are there
B
Is there
C
Do there
答案解析
正确答案:B
解析:
这道题考查的是 **There be 句型** 的一般疑问句形式以及主谓一致的原则。
**解析如下:**
1. **识别句型结构**:
句子询问“机器有什么毛病吗?”,这是典型的 `There be` 句型,表示“某处存在某物/某情况”。`There be` 句型的一般疑问句需要将 be 动词提前至句首,即 `Be + there + 主语 + 其他?` 的结构。因此,首先排除选项 C(Do there),因为 `There be` 句型中不使用助动词 do/does/did。
2. **确定主谓一致**:
在 `There be` 句型中,be 动词的形式取决于其后的主语(即真正的主语)。本句中的主语是 **anything**。
* `anything`(任何事/任何东西)是不定代词,在语法上被视为**单数**。
* 当主语为单数或不可数名词时,be 动词应使用 **is**。
* 当主语为复数名词时,be 动词才使用 **are**。
3. **选项分析**:
* **A. Are there**:用于主语是复数的情况(例如:Are there any problems?),与单数主语 anything 不搭配。
* **B. Is there**:用于主语是单数或不可数的情况,与 anything 搭配正确。
* **C. Do there**:`There be` 句型不能与 do 连用,语法错误。
**结论:**
因为主语 `anything` 是单数概念,所以 be 动词要用 `is`,构成一般疑问句 `Is there...?`。
故正确答案为 **B**。
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