题目
一个英语句子 主语的疑问
what the teacher had wortten on the board {were}keys to the problem括号里的为什么是{WERE而不是 WAS
what the teacher had wortten on the board {were}keys to the problem括号里的为什么是{WERE而不是 WAS
提问时间：2020-10-14
答案
关键词汇是KEYS,因此需要用为were,而不是was.
如果将句子改一下,就变为：
There were keys to the problem on the board written by the teacher.
如果句子为：
what the teacher had wortten on the board {was}a key to the problem.
这里就要用was,而不是were.
如果将句子改一下,就变为：
There were keys to the problem on the board written by the teacher.
如果句子为：
what the teacher had wortten on the board {was}a key to the problem.
这里就要用was,而不是were.
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