shall not的缩写,是shan't还是shalln't?怎么读?

不可抗力：如果有不可抗力发生,那么出现交货延迟,卖方不必负责.

这个不可以.
举个例子Shall we go to the park?
这种口语一般都不会那么回答
一般说I'm afraid not.等等比较礼貌

不是
shall not 缩写：'ll not
shouldn't 是should not 的缩写
是的
shan't=shall not
但一般不那样说

是shalln't,少恩特

shall not（用于陈述句的第二、第三人称中,表示命令、决心、意图等）you shall not leave your post.你不得离开岗位. will will
[wil, l, w?l, ?l]
aux.v.
用于表示简单将来式) 将, 要, 会
I will let you know about it as soon as we come to any conclusion.
我们一得出结论, 我就会让你知道.
愿意; 准备
I will help him if he asks me.
只要他提出, 我愿意帮助他.
(用于请求某人做某事)
You will allow us to retire.
请允许我们告退.
(用于表示可能, 与can类似)
That will be my brother ringing.
按铃的可能是我哥哥.
(用于表示推测, 与must类似)大概, 可能
The man with the umbrella will be the Prime Minister.
拿着雨伞的那个人准是首相.
(表示总是如此) 惯于, 总是
Oil will float on water.
油总是浮在水面上.
vt.
用意志力驱使(某事发生)
He who wills success is halfway to it.
热切争取成功等于成功了一半.
将(财产等)遗赠某人
He willed that his property be divided equally among his children.
他在遗嘱中讲明将自己的财产均分给子女.
vt. & vi.
〈旧〉愿意, 希望, 想要
Go where you will.
你愿意上哪儿就上哪儿.
n.
意志(力)
Will can conquer habit.
意志能战胜习惯.
决断, 意图, 决心
I felt he had a strong will.
我觉得他决心很大.
遗嘱
He told me that he didn't know the content of the will.
他告诉我他不知道遗嘱的内容.

will not和won't无区别

shan't won't
trust me!

我高一
老师说过 shall 含有命令,愤怒等的语气
而should 则表示应该做
具体情况看句子分析