found 是find “发现”的过去式 也是 动词原形“成立”所以要根据句子或上下文的意思而定
I haven't found 意思是我到现在没有发现,是完成时,强调的是到目前为止。I didn't find 意思是我没发现,过去时,强调的是没有发现这个事实。具体用哪个,需要根据上下文语义语境综合判断。
i didn't find I didn't found is wrong grammar. It's supposed to be written as "I haven't found". Why? because "did" is already past tense and if you add another word that is also a past tense, that would be considered redundant.的同义词
a是啊!今天休息! Yes! Today rests![translate] aYou are a silly b 您是傻的b[translate] a庆典 Celebration[translate] a白色T恤和牛仔短裤 White T-shirt and cowboy short[translate] a你姐了啊 Your older sister[translate] adidn't find 没有发现[translate]...
a第180Days. 180Days.[translate] aI didn,t find I didn, t发现[translate]
两种说法都不合适,前一种只能说明过去的情况,后面用一般现在时是说明一种普遍的情况。准确说法应该用一般现在时,I haven't found my keys 。表明结果。
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did not 和 didn t 都是一般过去时的否定形式,didn't是did not 的缩写形式,在否定句里两者是可以互换的,但在否定回答里,要用didn't而不用did not.
didn't是一般过去时的否定,表示过去“没做”某件事情。而couldn't是情态动词could(can的过去时)的否定,表示过去“不能”做某事。原句中文是拉不进城,也就是没有办法做到这件事,而不是没去做这件事,所以用couldn't不用didn't
区别:1、时态不同。don't是一般用于一般现在时,didn't是一般用于过去时;比如:don't 前面用于一般现在时 i don't read book now .(现在我没有读书)didn't 是用在过去式的:i didn't read book yesterday.(我昨天没有读书)2、人称区别。don’ t主语是第一人称和第二人称,一般现在时的...