ought to,should,need,must,shall有啥区别

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• 1.shall,will;2.ought to,should,be supposed to,be to do;3.may,can,could,must.三组各有什么区别?
• 关于英语ought to have done 与should have done的区别 有need have done needn,t have done 与should h
• 关于情态动词语法,语法书有个地方写need常用于疑问和否定句,在肯定句中用must,have to ,ought to ,should但语法书有个地方介绍MUST的时候,有个句子MUST I BE HOME BEFORE TEN O'CLOCK?这不就是疑问句吗?为什么上面又说 need常用于疑问和否定句,按道理这是疑问句应该用need啊到底是句子错了还是语法错了,
• 什么情态动词也可以作实义动词用?请一一列举出来.do，be，have，can，may，need，must，dare，will，shall，used，ought，would，should，could，might，had better.请问：以上单词哪些可以作为实义动词时也可以作为情态动词？
• shall 用于第二 三人称的陈述句 语气有 允诺 命令 警告 强制 威胁 意志 决心 等语气想问下 有没有什么口诀 能把上面的记住 或者有什么方法-Sometimes my son does not listen to me.I do not know what to do.-You _____ cricitize,but _____ scold him.A.would cannt B can would notC should would not D may cannot我做的时候 看的是 would 过去总是 但语境是一般现在时 所以是D可是我觉得我的太草率 所以想他听听你们的看法-The *er ______this way,for here are his footprints.A must escape B must have escapedC ought to escape D should escape 过去推测想问下 这里escape是vt vi this way 是状
• ---How is that,Joan?---Yeah,it's from the boss.She ( ) first whether she likes it.A．shall go B.ought to have gone C.should go D.must have go 请讲详细点选哪个还有为什么不能选CAC应该都可以表“应该”嘛但麻烦讲一下为什么不选其他的，THANKS!还有could have done和might have done都有本可以做而没做成的意思，那么二者有什么区别呢？比如这个题---John saw a three-year-old cjild walking alone in a sjopping mall,so he took the child home immediately and called the police.---But he_____have waited withthe child until the parents returned.A.sh
• 与shouldn't 的含义及用法它和 must 还有 need 有什么区别?比如 John is very sick.He should see a doctor.也可以说成 He must see a doctor .He need see a doctor.有什么区别?
• must,can,should,need有什么区别
• 分类 行为动词、情态动词、系动词、助动词有很多单词play ,can ,sound ,do ,study ,will,seem ,must ,shall,be ,listen ,taste ,may ,have ,sleep ,need,sent,grow ,open ,dare ,smell ,work ,turn ,finish,ought to,become,join,could,close,look,borrow,might,arrive,feel,make,
• must,can,may ,should,would,need和shall的区别
• must need should can的区别
• 用棱长都是2分米的二个立方体粘合成一个长方体,长方体的表面积是（）,体积是（）