单选题
Tom’s teacher and friend ___ Mr Smith.
A
has
B
are being
C
is
D
are
答案解析
正确答案:C
解析:
这是一道主谓一致的问题。
首先,我们分析句子的主语“Tom’s teacher and friend”:
- 从字面意思上看,这里有两个名词:teacher(老师)和friend(朋友),它们由连词“and”连接。
- 但关键在于理解“Tom’s teacher and friend”这一整体表达。在英语中,当两个名词由“and”连接时,通常表示两者都是主语,谓语动词用复数。但这里存在一个特殊情况,即当这两个名词实际上指的是同一个人或同一事物时,谓语动词用单数。
- 在这个句子中,“Tom’s teacher and friend”很可能指的是同一个人,即这位既是Tom的老师又是他的朋友的人是Mr Smith。
接下来,分析选项:
- A选项“has”是第三人称单数现在时,但表示的是“有”的意思,与句意不符。
- B选项“are being”是现在进行时的复数形式,也不符合句意。
- C选项“is”是第三人称单数现在时,用于主语是单数的情况,符合这里的特殊情况。
- D选项“are”是复数现在时,通常用于主语是复数的情况,但在这里不适用。
因此,根据句子的语境和主谓一致的原则,正确答案是C选项“is”,因为它正确地表示了主语“Tom’s teacher and friend”(在这里指的是同一个人)是单数。
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