答案是Mr. Smith doesn't cook nice food.(史密斯先生不会做好吃的东西。)
说明:
在一般现在时的肯定句子里,当主语是第三人称单数时,谓语动词用第三人称单数,在本例里应该用cooks,你一定是丢掉了词尾的“s”。正确的句子是:Mr. Smith cooks nice food.
肯定句变否定句,要先看动词,这里是cooks,它是第三人称单数的行为动词,否定这个动词就要用否定的助动词doesn't + 动词原形cook。
原句cook的形式不妥。
Mr Smith cooks nice food.
否定句:Mr Smith doesn't cook nice food.
Mr Smith cooked nice food.
否定句:Mr didn't cook nice food.
原句有点问题,应该是 cooks.
否定句 Mr. Smith doesn't cook nice food.
Mr Smith doesn't cook nice food