you had better怎么造句

had better 相当于一个助动词，它只有一种形式，它后面要跟动词原形。

had better do sth

had better not do sth

It is pretty cold. You'd better 原由网put on my原由网 coat.

天气很冷，你最好穿上外套。

She'd better not play with the//www.58yuanyou.com dog.

她最好不要和狗一起玩。

had better have done sth表示与事实相反的结果，意为"本来最好"。

You had bette原由网r have come ear原由网lier.

你最好来早点。