剑桥MSE必备语法丨Had better的形式和

Had better的形式和意思
Had better是常见的表达形式,使用had better来谈论某人现在或将来应该要做的事or应采取的选择。这种表达形式,动词一直是“had”,而非“have/has”。在非正式的情况下,可以缩写为“'d better”。Had better后面使用动词原形。
比如:
非正式: It's five o'clock. I'd better go now before the traffic gets too bad.
正式:The government had better take the will of it's citizens into consideration.
Had better是一个较为强烈的表达。当我们认为如果某人不按照要求或建议去做,就会产生负面的结果时,我们就会用这个短语,比如:
She'd better get here soon or she'll miss the opening ceremony. (负面结果)
在口语表达中,特别是在非正式的交谈中,有时候也可以使用had best,比起had better, had best更加温和委婉。例如:
You'd best leave it till Monday. There's no one in the office today.
Had better的否定形式和问句形式
否定形式
Had better的否定形式为had better not(='d better not),例如:
I'd better not leave my bag there. Someone might steal it.
You'd better not tell Elizabeth about the broken glass – she'll go crazy!
问句形式
Had better的问句形式是将主语和had位置对调,意思相当于should,但是比should更为正式,例:
Had I better speak to Joan first before I send this form off?
Had we better leave a note for the delivery guy to take the parcel next door?
否定问句
否定问句形式更为常见:
Hadn't we better ring the school and tell them Liam is sick?
Hadn't you better switch your computer off? It might overheat if you leave it on.

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