You had better是祈使句吗

You had better是祈使句吗 you had better watch TV on Friday evening变为 祈使句 You had better wash your hands at once.改祈使句 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? 英语语法问题 关于 would better,had batteryou had better 和 you would better 是一个意思吗?you'd better 是什么的简写 you'd better.=you had better吗?为什么? you'd better not .中的('d)是什么的缩写是had吗?为什么这里用had? you'd better是you would better还是you had better的缩写?两者什么区别? you had better make you had better you would do better to do 和you had better do是一个意思吗,能呼唤吗 Can you help me.是祈使句吗? You'd better stay at home.(改为否定祈使句) She told me THYou'd better stay at home.(改为否定祈使句)She told me THAT SHE HAD FINSHED HER HOMEWORK.(提问大写的) You had better not smoke here,( 为什么后面接的是had you而不是will you you had better be careful.had better 的词性是情态动词,be careful词性是名词,情态动词后可以跟名词吗? 请问had better是情态动词吗 had better 是虚拟语气吗 “you had better take an coat”had是过去式,为什么要用had?