用were提问,否定形式是什么.
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用were提问,否定形式是什么.
用were提问,否定形式是什么.
用were提问,否定形式是什么.
Were they planting trees?
They were not planting trees.
were not 缩写成: weren't 如: They weren't at school yesterday.
应该是no,I was not(或you/we/they were not).
主要看主语是啥,根据语音环境的不同而不同