有shalln't的用法吗 另外还有can/shall have done吗

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• 新概念第二册同步测试选择题.1:This is the first time__here为什么是现在完成时,不能是过去式吗.2：He has never spent a __day 为什么是more worrying 不是most worring.3:this news sounds__]怎么是encouraging 不是to encourage.4:i'd like to have this package__.madam怎么是 weighed,不是be weighed 5:__anything about the accident.是not knowing 为什么不是not know6:it__be my uncle.he has gone to beijing.是can't 为什么不是mustn't还有：he likes borrowing money from his friend.有两个动词怎么搞的.麻烦下了.
• 有shalln't的用法吗 另外还有can/shall have done吗
• 英语中,here it is 和 here you are 的区别.请问,英语中,here it is 和 here you are 的区别是什么?他们的意思不都是“给你”吗但是用法有什么不同啊?是here it is 用在单数中,而here you are 用在复数中吗?还有一道英语题：-----Can I have a cup of tea?-----Yes,( )选项：A.here it is B.here you are
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• 有shalln't的用法吗 另外还有can/shall have done吗
• 有关情态动词表推测的问题例1：Conserding his ability and experience,he ____ better.A.can have doneB.might have done应该选B,老师说没有can have done,因为can表能力时有时态区别,所以只有could have done,但有can't have done,这是can表推测,没有时态区别.（说的对吗?）但这里用might,might不也表推测吗?为什么不能是选A,can表推测?难道can只能做否定推测以及客观推测?还有,关于should的用法,should也可表推测吧,“他应该是最高的孩子”应该是什么?“He may be the tallest boy.”should can行吗?并请给出解释.例2.-I can't find my purse.-You ___ have lost it while shopping.A.may B.can C.should其他两个为什么不行呢?
• 提问,英语的一些单词、短语、句型用法1、We are all here waiting for Miss Green to come 为什么用to come2、I saw a big dog lying under the tree when walking past the shop为什么不用was walking3、All has been done now.We can go.这里为什么用has?是All为不定代词还是将All看为一个整体还是什么?4、The students were all tired,but none of them stopped to have a rest-Do you want an apple,a banana or a pear?-None,they all look bad为什么用none,不是人和物吗?5、I think he must be in the office now,isn't he?是否情态动词反意疑问句都用be动词?
• 可用mustn't have done表示对过去的推测吗?若可以,那这个结构与can't have done有区别吗?可以的话,请提供相应的信息来源.本人不甚感激~
• 情态动词can't have done 和couldn't have done 有什么区别吗对过去发生的事情否定猜测用can't have done 或couldn't have done ,两者有区别吗?比如 He can’t have gone to Beijing for I saw him a minute ago. 能换成He couldn’t have gone to Beijing for I saw him a minute ago.吗?谢谢
• could have done能不能表示对过去事实的猜测用在肯定句中?与must have done may have done might have done
• couldn`t have done 不用于虚拟语气 么couldn`t have done 不用于虚拟语气 那要是说 本不能够做..怎么表达