had better do 为什么要用had?不是have better do

had better do 为什么要用had?不是have better do had better do=? “you had better take an coat”had是过去式,为什么要用had? 英语翻译A We'd better not to go out in the shower,had we?B We'd better not go out in the shower,did we?C We'd better not go out in the shower,had we?应该选C,我知道是would better do,但想请教诸位为什么后面要用had而不是did? You will do better next time 为什么要用do better为什么要用do better 不用do well 或do good 是had better to do还是had better do had better do还是had better to do had better +do sth 还是had better +to do sth had better(not) do sth... had better do等于什么 had better not do?had not better do?为什么我们高三复习那本单词书上写的是had not better do?不是应该是had better not 用had better do sth造句最好短小一点 I had better ___(do/to do) 是had better do sth还是have better do sth have better do sth.和had better do sth. you would better you had better 都什么时候用,意思一样吗,you'd better do sth是哪个缩写? you'd better 是什么句型是什么句型better是副词吗?它修饰had吗?为什么是had?为什么不是have能用将来时吗you will have better to do可以用第三人称吗he has better to do to为什么可以省略 我知道 只有 let help 英语翻译提示had better not do sth