don't need和needn't的区别是什么?
needn't是情态动词的否定式,don't need是动词的否定式
need既可用作情态动词,也可用作实义动词。当need作情态动词时,意思是“必要,必须”,主要用于否定句(needn't)和疑问句,第三人称单数不加s,过去式不加ed;
当need作实义动词时,意思是“需要,想要”,可用于肯定句,否定句(don't need)和疑问句中,第三人称单数要加s,过去时要加ed,其后接的不定式要加to。
例:I want to go to the dentist,but you needn't go with me.
我要去看牙科医生,但你不必跟我一起去。(need作情态动词)
例:I don't need to buy a new pair of shoes.
我不需要买一双新鞋子。(need作实义动词)
扩展资料:
needn’t是英式,don’t need是美式
I needn’t go home now.(英)
I don't need to go home now.(美)
你只需要知道直接否定的是英式即可,需要加助动词的是美式同理的还有
I haven’t any money=I haven’t got any money(英)
I don't have any money(美)
Have you got a pen?(英)
Do you have a pen?(美)
I’ve got a pen.(英)
I have a pen.(美)
另外表达过去做过某事时,时态上也有所不同,美式多用一般过去式去表达英式那种复杂的现在完成时
Have you gone to the paty yesterday?(英)
Did you go to the party yesterday?(美)
“shall”和“will”用法不同,陈述句英式英语用shall表达自己和我们将
美式英语用will表达全部,疑问句表达自己和我们英式用Shall开头,但美式不用Will开头,用
Should.Shall I go to the pary?(英)
Should I go to the pary?(美)
I shall go to the party.(英)
I will go to the party.(美)
need既可用作情态动词,也可用作实义动词。当need作情态动词时,意思是“必要,必须”,主要用于否定句(needn't)和疑问句,第三人称单数不加s,过去式不加ed;
当need作实义动词时,意思是“需要,想要”,可用于肯定句,否定句(don't need)和疑问句中,第三人称单数要加s,过去时要加ed,其后接的不定式要加to。
例:I want to go to the dentist,but you needn't go with me.
我要去看牙科医生,但你不必跟我一起去。(need作情态动词)
例:I don't need to buy a new pair of shoes.
我不需要买一双新鞋子。(need作实义动词)