1.一般情况下直接加“ly”。
如：polite-politely，imediate-immediately。
2. 少数以e结尾的形容词，要去掉e再加-ly。
如：true-truly。
3.绝大多数辅音字母加e结尾的形容词直接加-ly。
如：polite-politely。
4.以辅音字母加le结尾时，去e加y。
如：considerable-considerably。
5.元音字母加le时加 ly。
如：sole-solely，但是whole-wholly例外。
有：
（1）lne=1、
（2）lne^x=x、
（3）lne^e=e、
（4）e^(lnx)=x、
（5）de^x/dx=e^x等。
以e为底的运算法则通常涉及到自然对数，即以e为底的对数（ln，自然对数）。
以e为底的对数通常用ln表示，其中e是一个重要的数学常数，它的值约为2.71828。
A: Hey, have you tried that new sushi place down the street? I heard it's amazing.
B: No, I haven't. I'm more of a burger and fries kind of person.
A: Well, you should give it a try. It's always good to try new things.
B: I don't know, raw fish just doesn't sound appealing to me.
A: That's understandable, but sushi is more than just raw fish. They have vegetarian options and cooked rolls too.
B: Hmm, maybe I'll give it a shot. What's your favorite roll there?
A: Definitely the spicy tuna roll. It's got the perfect amount of kick to it.
B: Alright, I'll take your word for it. Let's go check it out this weekend.
A: Sounds like a plan! And if you're still craving burgers, we can hit up that new gourmet burger joint afterwards