shall not缩写是shan't还是shalln't,怎么读

shall not的缩写,是shan't还是shalln't?怎么读? shall not缩写是shan't还是shalln't,怎么读 为什么shall not缩写不能是shouldn't而是 shan't? shall not 的缩写,是shouldn't吗 can not的缩写是can't还是cann't? will ont 的缩写是 won't 那 shall not 也有缩写吗 有shalln't的用法吗 另外还有can/shall have done吗 Let's的反意疑问句的回答用shall we 还是shan't won't是will not的缩写 还是Wonld not的缩写? should not缩写是shouldn't吗 will not 的缩写!是wan't? you are not的缩写是you're not还是you aren't?