B 用某一种声调，并把重音落在某一重要的字上，might 就可表示一种带有责备口气的请求：You might'help me（你该能帮我一把）中重音落在help上时，有你为什么不帮我或你本应该帮我的含义。
C might与其他人称连用表示某种不满：He might'pay us！（他总该付钱给我们吧！）中重音落在pay上，意为他没有付钱，我们很生气。
D might + 完成式表示对以前未做某事表示不满或责备：Youmight have told us（你当时本应该告诉我们）中重音落在 told 上，意为你应该告诉我们。
You can memorize words in an efficient way if you pronounce them reasonably. Say words correctly, and you will learn them easily. Correct pronunciation means correct spelling of the words. English spelling is not good to guide its pronunciation. But spelling and pronunciation have closed relationship. They match each other perfectly. Sometimes we can pronounce a word according to its spelling. English pronunciation can also guide its spelling. This is a two-way communication.
told us（你当时本应该告诉我们）中重音落在 told 上，意为你应该告诉我们。
