can在什么情况下不吃东西

can could区别比如:没有什么东西可以吃时,就问what can I eat?还是what could I eat?那在生病时,很多东西不能吃,这时询问有什么东西可以吃的时,是以上哪一种问法?还是两种都可以?
加菲41日371
could / can 1)could 是past tense/ can是present tense If you practise more,you can pass the exam (考试还没开始) If you practised more,you could pass the exam.(考试结束罗,但没及格) 2) 建议某人可做某事,我们会讲could have (done something),can have You could have met me at the station,couldnt you?因为建议,是假设性的情况,所以要用 past tense的 could 3) can同could在问句中语气不同:can是问能力 or 差不多等於命令 could是问可不可以(有礼貌) 比较:Can you fix your bed?(这是阿妈说的,不可以say no) Can you drive?(问能力) Could you help me on this?(问同事,有礼貌,不是命令) 4) 3.关於未来发生可能性要用could:I could come tomorrow if you want.如果你想,我明天可以来 I can come tomorrow.我明天能够来.what can I eat?才是因为你是真的生病,不是假设而你问的时候就已现在式了...
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都可以 它们的区别在于could 更委婉 更客气一些
could原为CAN的过去式,但有时亦可用COULD代替CAN,表一种委婉的语气,并希望得到对方肯定的回答.故都可,更好用COULD
扫描下载二维码怎么才能不吃东西但是不饿_百度知道The page is temporarily unavailable
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/etc/nginx/nginx.conf.不吃东西就不吃一吃就猛吃这是什么原因_百度知道人在怎么样的情况下可以一个月不吃东西?为什么有些人天生就不用吃东西呢?_百度知道

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