don't need You don't need to know 可不可以转化成 You needn't know 若可以,怎么会一个 do not need 一个need not?= =是的吾杯具了.没看仔细

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don''tneedYoudon''tneedtoknow可不可以转化成Youneedn''tknow若可以,怎么会一个donotneed一个neednot?==是的吾杯具了.没看仔细don''tneedYo

don't need You don't need to know 可不可以转化成 You needn't know 若可以,怎么会一个 do not need 一个need not?= =是的吾杯具了.没看仔细
don't need
You don't need to know 可不可以转化成 You needn't know 若可以,怎么会一个 do not need 一个need not?
= =是的吾杯具了.没看仔细

don't need You don't need to know 可不可以转化成 You needn't know 若可以,怎么会一个 do not need 一个need not?= =是的吾杯具了.没看仔细
可以的,只不过词性不同,用法不同
前者是实义动词,后者是情态动词
need用作实义动词时,need sb to do sth ,need to do sth
除此此之外,还有一个表被动的need doing sth,此时的主语一定是物
例:the bike needs repairing. 这两=辆自行车需要(被)修了

动词有单三形式,各种时态,need也都有
动词,变否定句时,在前面加don't doesn't didn't,need也不例外
nee用做情态动词时,和其他情态动词一样,没有单三,后面接动词原形
变否定句时,直接加not,need not =needn't,就像can not=can't
意思相同,只是用法不同