21.9 had better默示"最好"，相称于一个助动词，它只要一种形式，它背面要跟动词底细。例如：_模样形状动词
21.9 had better默示"最好"，相称于一个助动词，它只要一种形式，它背面要跟动词底细。例如：
It is pretty cold. You'd better put on my
coat.天相称冷。你最好穿上我的外衣。
She'd better not play with the dog.她最好不要游玩那条狗。
had better have done sth默示与毕竟相反的功效，意为"正本最好"。例如：
You had better have come earlier.你本该来得早一点。

关键字：助动词和模样形状动词 动词 助动词 日语 动词底细 日语动词底细 日语动词底细总结