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We saw quite a lot of cows on the farm.( 改为一般疑问句)

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We saw quite a lot of cows on the farm.( 改为一般疑问句)
()()()quite a lot of cows on the farm.
They worked in a hospital last year(改为否定句)
()()()in a hospital last year
We saw quite a lot of cows on the farm.( 改为一般疑问句)
Did you see quite a lot of cows on the farm?
They didn't work in a hospital last year.
【解析】:一般过去式的陈述句,改疑问句主要看动词.如果动词是实意动词,改疑问句就是Did+主语+动词原形+...(即剩下的照抄)如果动词是系动词,改疑问句就是Was/Were +主语+...
否定句也同理.主语+didn't+动词原形+.或者主语+wasn't/weren't+主语+...