用do/did/does 如何進行強調？在一般現在時和一般過去時可以用do/does/did進行強調。比如說：
I did tell you about it. Why do you deny it now?
我確實跟你講過了，你現在為什麼要否認呢？
I do want to have a dog like yours. How cute it is!
我真想有一隻像你的狗一樣的狗，太可愛了。
He does want to change his life ,so he works so hard.
他確實想改變自己的命運，所以他努力工作。