正确答案是had better do sth，是固定搭配。
had better do sth
读音：英 [həd ˈbetə(r) duː] 美 [həd ˈbetər duː]
释义：还是?好，最好还是?
用法：had better是一个英语词组，意思是最好，可将其视为“情态”动词，可用于一切人称，没有任何词形变化，其后接不带to的不定式，表示现在或将来的概念。
语法：had better后面必须跟动词原形，had better后跟动词原形(即不带to的不定式)，构成had better do sth句型，had better可用以表示在目前状况下最好做某事。
例句：He thought he had better track this wolf and kill it.他认为最好跟踪这只狼，杀了它。
扩展资料
had better do sth的近义句：had best
had best
读音：英 [həd best] 美 [həd best]
释义：最好（有些人认为此用法不规范）
用法：尽一个人或几个人最大的努力做一件事。
例句：
1.We had best keep them at arm's length.
译文：我们最好和他们保持距离。
2.I thought I had best have your opinion first.
译文：我认为最好先听听你的意见。
had better do sth 是正确的。
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。
1、had better do sth的反义词：had better not do sth
It is pretty cold. You‘d better put on my coat.
外面天气很冷，你最好穿上我的外套。
2、had better have done sth表示与事实相反的结果，意为"本来最好"。
You had better have come earlier.
你本来最好应该早点来。
扩展资料
同义词：
一、it would be best
英 [ɪt wʊd bi best] 美 [ɪt wʊd bi best]
最好
1、It would be best if you could teach it directly.
如果你可以直接教导，将是最好的选择。
2、I think it would be best if I talked to her.
我想让我跟她说的话会比较好。
二、it is better to do
It's +adj+（for sb+）to do，better是good ,well的比较级。
it is better to do calibration before you start scanning any business cards, it could ensure you obtain a better quality image of the business card.
第一次扫描名片之前，最好先做扫描仪校准，这样能确保扫描名片时获得最好的图像质量。
本回答被网友采纳正确答案是had better do sth，是固定搭配。
had better do sth
读音：英 [həd ˈbetə(r) duː] 美 [həd ˈbetər duː]
释义：还是…好，最好还是…
用法：had better是一个英语词组，意思是最好，可将其视为“情态”动词，可用于一切人称，没有任何词形变化，其后接不带to的不定式，表示现在或将来的概念。
语法：had better后面必须跟动词原形，had better后跟动词原形(即不带to的不定式)，构成had better do sth句型，had better可用以表示在目前状况下最好做某事。
例句：He thought he had better track this wolf and kill it.他认为最好跟踪这只狼，杀了它。
扩展资料
had better do sth的近义句：had best
had best
读音：英 [həd best] 美 [həd best]
释义：最好（有些人认为此用法不规范）
用法：尽一个人或几个人最大的努力做一件事。
例句：
1.We had best keep them at arm's length.
译文：我们最好和他们保持距离。
2.I thought I had best have your opinion first.
译文：我认为最好先听听你的意见。
本回答被网友采纳had better do sth 是正确的。
had better后面必须跟动词原形。had better后跟动词原形(即不带to的不定式)，构成had better do sth.句型。在固定词组had better之后。
注意:had better的否定形式had better not do sth
例如:
You had better go home now.你最好现在回家。
It's cold outside. You'd better not go out.外面很冷,你最好不要出去。
扩展资料:
同义：
1、had better do sth近似结构：it is better to do
It's better to do是一种结构：It's +adj+（for sb+）to do，better是good ,well的比较级。
2、had better have done sth表示与事实相反的结果，意为"本来最好"。
You had better have come earlier.你本来最好应该早点来。
3、will (would) you please之后动词不定式不带to
Would you please say it again more slowly? 请你再慢慢说它一下好吗？
本回答被网友采纳had better do sth 是正确的。
had better后面必须跟动词原形。had better后跟动词原形(即不带to的不定式)，构成had better do sth.句型。用法示例如下：
1、You'd better go to hospital at once.
你最好立即去医院看病。
2、Tom, you'd better go there today.
汤姆，你最好今天去那儿。
扩展资料：
had better do sth近似结构：it is better to do。
It's better to do是一种结构：It's +adj+（for sb+）to do，better是good ,well的比较级。
it is better to do的用法示例如下：
When it is possible, it is better to do static reservations, or group several small allocations in a larger one.
如果可能，最好静态保留或者从一个大的内存空间中分配一组小内存空间。
本回答被网友采纳