had better的用法

had better的用法

had better 是 最好 的意思这两个词组合在一起当做情态动词，也就是后面直接加动词原形，否定式在better后加not，再加动词原形。eg（举个例子）：You had better go out for a walk。（你最好出去走走） You had better go out .你最好不要出去 注意，You had better 可以写为 You'd better http://wenku.baidu.com/view/82e090d233d4b14e8524686d.html