have to 和do not need to的区别

Question

如题所述

Answer 1

1、have to表示客观需要做的事情,意思是“必须”、“不得不”.后跟动词原形,有人称、
时态和数的变化,与情态动词 must 近义.have to 有时态和人称变化,而 must 则没有.
反义词是Not necessary 没必要.
例句:My mother is ill.I have to look after her at home.
妈妈病了,我得在家照看她.

2、do not need to 意思是"不需要 ".need to 作情态动词，通常用于疑问句、否定句、条件句、这里就是否定句,不需要做某事,反义词是need to 需要,应该做什么.
例句:You do not need to worry about it.
就不用您操心了.

Answer 2

have to和don't need to的意思正好相反。
have to的意思是不得不，后面接动词原形，指受客观条件或环境迫使而"不得不"做某事，突出客观性。don't need to的意思是不需要，和have to的意思正好相反，这里的need是一个实意动词。如：
He had to go to Germany.
他不得不去德国。
He didn't have to go to Germany.
他不必去德国。
We'll have to find a taxi.
我们需要找辆出租车。
We won't need to find a taxi.
我们不需要找辆出租车。
There has to be some kind of way out.
一定会有某种解决办法的。
There doesn't need to be some kind of way out.
不一定会有解决的方法。
That has to be the biggest lie ever told.
那肯定是有史以来最大的谎言。
That doesn't need to be the biggest lie ever told.
那不一定是有史以来最大的谎言。

Answer 3

have to（不得不）有强制性的意味
I have to go to school every week.
need to(有必要）就不太强制去做什么
Tomorrow is Saturday and you don't need to get up so early.本回答被提问者采纳