高一英語語法總復習
語法精講:
情態(tài)動詞(I)
had better,should,ought to
1.had better
had better的.意思是最好,后面接動詞原形,表示說話人希望對方做什么。had better not則表示說話人希望對方最好不要做什么。
e.g.You had better see a doctor.
你最好找大夫看看。
You had better not go home now.
你現(xiàn)在最好不要回家。
2.should
should通常表示勸告,建議,意思是應該。
e.g.You should keep your promise.
你應該履行諾言。
You should invite him to the party.
你應該邀請他參加舞會。
3.ought to
(1)ought to常用來表示因為有責任、義務,而應該做某事,通常與should意思相近。
e.g.The students ought to obey the school rules.
學生們應遵守校規(guī)。
Oughtn't we to give him a chance to try?
我們難道不應該給他一個嘗試的機會嗎?
(2)ought to也常用來表示勸告或建議,意思是應當,宜于。
e.g.There ought to be more buses during the rush hours.
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