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had better后面加动词原形。had better的意思是(用于建议、警告、威胁、发表意见等)最好。had better的例句：I wish I had better news for you.我多希望能带给你好消息。
had better后面加动词什么形式
1、had better后面加动词原形。had better的意思是（用于建议、警告、威胁、发表意见等）最好。
例句：
l wish l had better news for you（我多希望能带给你好消息）
lts half past two. l think we had better go home（现在两点半了。我想我们最好还是回家吧。）
2、had better其后接不带to的不定式，表示现在或将来的概念。
例句：
You had better sit here and have a rest.你最好在此坐坐休息一会儿。（现在）
He had better stay in bed tomorrow.他最好明天卧床休息。（将来）
3、hadbetter当其后接have加过去分词时，表示过去概念。
例句：
He had better have stayed in bed as I suggested.他最好按照我的建议呆在床上。
You had better have had tea,but you asked for coffee.你最好喝茶，但却你要了咖啡。
had better＋动词原形。had better do最好做某事。这个词组被划分在情态动词里面，表示说话人的情感态度。
had better造句
1、You had better break with your bad habits.
你最好改掉你的坏习惯。
2、When James realized how severe her illness was, she knew shehad better hurry up and live life.
当詹姆斯意识到她的病情有多严重时，她知道她最好抓紧时间好好生活。
3、You had better get a doctor to pull out your bad tooth.
你最好去看医生把你的坏牙给拔了。
4、As he could not find it immediately, he said: "I know you are there, so you had better come out!"
因为他一时找不到，就说：“我知道你在那儿，你最好自己出来!”
5、"Oh, you had better go tomorrow morning, doctor," Clara urged.
“哦，你最好明天早上去，医生。”克拉拉催促道。