could 是can的过去式,那为什么could you help me 用could,又不是过去式

bluesonic62022-10-04 11:39:542条回答

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monsterblue 共回答了14个问题 | 采纳率78.6%
在表示能力,意为“能够”的时候,could才是can的过去式.
表示推测的时候,他俩的区别只是语气强弱的问题,could语气稍弱
这个句子里面是表示请求的,can和could都可以使用,只是could更加礼貌,客气,委婉
1年前
leafpopo 共回答了2个问题 | 采纳率
could是can的过去式,但在表示疑问的时候,could比can语气更委婉,显得更礼貌,另外,may比can的语气也是更显委婉,can会显得更肯定
1年前

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希望附带有译文!
以事为主,必须是过去式的!
字数不必太多,3句以上就行,不要超过7句!
ZRWilliam1年前1
不想长大的猪 共回答了22个问题 | 采纳率86.4%
I was very happy last weekend.The weather was sunny and warm.I went the museum with my parents and my sister.The museum was very beautiful and interesting.Then I ate the dumplingand noodles with my fa...
把动词改为过去式Play----water-clean--finish--rain--talk--surf--carry
把动词改为过去式
Play----water-clean--finish--rain--talk--surf--carry--watch--dance--listen--call--visit--jump--like--live--stay--study--put--want--is--am--are
zhangyamei1年前2
无人爱我 共回答了20个问题 | 采纳率85%
played
watered
cleaned
finished
rained
talked
surfed
carried
watched
danced
listened
called
visited
jumped
liked
lived
stayed
studied
put
wanted
was
was
were
RELIZE不用过去式?only then did y realize i was wrong
uude男人est1年前3
liqijake 共回答了16个问题 | 采纳率87.5%
前有did所以不用
过去式的宾语从句从句部分的动词要不要变?
过去式的宾语从句从句部分的动词要不要变?
例如my teacher hasn't arrived why she 《arrive》late?arrive要变吗?
就不是法拉利1年前3
313940620A 共回答了22个问题 | 采纳率95.5%
要变,因为发生在过去
10篇 过去式 50——60词 贴近生活!
10篇 过去式 50——60词 贴近生活!
麻烦带翻译
烧比1年前1
苹果家园 共回答了18个问题 | 采纳率77.8%
Summer holiday is coming .I want to go to Beijing .I go to Beijing with my father ,my mother and my brother .We want to go there by plane because it takes less time .We can see many things in it .First we can visit the Great Wall ,it is very famous for the world ,so I like it very much .Second we can go to the zoo because I like to see animals .There are many foreigners in this city ,too .I want to talk with them in English .I want to learn English from them .I think we can have a good time then .I hope it is coming soon
4年级学的单位名称有哪些?hurt的过去式是什么?
野百合银领时尚1年前1
人醉枫业中 共回答了19个问题 | 采纳率94.7%
单位名称嘛.这个你可以买数学书~hurt的过去式还是hurt,不规则变化.
mean、pick、keep、smoke、look、poiant、let’s、pull、taste的过去式
20240113831年前3
qqew123 共回答了19个问题 | 采纳率78.9%
meant、picked、kept、smoked、looked、pointed、let、pulled、tasted
英语过去式与完成时的区别 我总是弄错. 复制的话也来点有用的 没用的 别复制 谢谢啊
英语过去式与完成时的区别 我总是弄错. 复制的话也来点有用的 没用的 别复制 谢谢啊

It was so cold that they made a fire __thenselves . a to warm b.to have warmed 这题我选的b 答案是a

mary looked glad ___the examination paper ahead of time .a.to have finished b.to finish 我选的b 答案是a . 求解释与过去式与完成时的区别 好的会加分

seeyou1991年前1
6034112 共回答了18个问题 | 采纳率88.9%
这位同学请试译一下:
第1 句:天很冷,于是他们生了火 _________ (空里你会填“来取暖” 还是“已经暖和过来了”?)
第2句:Mary___________试卷,所以她看上去挺高兴的.(空里你会填“已经做完了”还是“要去做完”?)
另外补充一下,这两个例句都不涉及完成时,而是涉及动词不定式 的完成体.
过去式:句子里有一个明确的过去时间;
现在完成式:某动作或者现象起点在过去,一直延续到现在.比如:我在这个城市生活了10年了(从10年前一直到现在都生活在这里) / 我从来没有去过大海(“没去过大海”这件事一直到延续现在).
希望对你有所帮助.