|good for还是good to?|
|作者：刘永科 文章来源：本站原创 点击数： 更新时间：2014/4/25||
good for还是good to?
学生问：有一次见到一本教辅书上讲，像useful, important, necessary这些词一样，good之后用介词to或for没有区别，可以互换。请问老师，这样说对吗？
A man was troubled by mice. They ran about all over his house at night. In the daytime, they just stayed under the floor.
The man thought, “What I need is a cat, a good cat that can catch mice.” He knew of a man who had cats for sale. So he went to see him. “Do you have a cat that is good for the mice?” he asked the man. “Well, yes. I do happen to have a cat that is good to the mice,” replied the man. “I’ll take it,” said the first man.
He paid for the cat and took it home. A week later, the cat didn’t catch any mice, but it played with them like old friends. So the man went back again with the cat under his arm. They had a quarrel because they both took the meaning of “good” as they needed.
上面的故事十分有趣。买猫人是想买一个good for mice的猫，然而，那个卖猫人有一个good to mice的猫，最后结果必然是一场quarrel。
“Do you have a cat that is good for the mice?”“你这儿有没有善于捉鼠的猫？”
“I do happen to have a cat that is good to the mice.” “碰巧我还真有一只对老鼠不错的猫。”
good表示“适合，有效，胜任”意思时，用be good for；good表示“仁慈，善良”意思时，用be good to。只有表示“对......有益处”时，两者可以互换。试比较：
The old lady is good to the boys.（正确）
The old lady is good for the boys.（错误）
The medicine is good to the disease.（错误）
The medicine is good for the disease.（正确）
The gold chain was just good to Jim's watch.（错误）
The gold chain was just good for Jim's watch.（正确）
John is not good to the job.（错误）
John is not good for the job.（正确）
Athletic sports are good to your health. （正确）
Athletic sports are good for your health. （正确）
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