Ekman hasfound that the so-called Duchenne smile, which is characterized by “crow’s feet”wrinkles around the eyes and a subtle drop in the eye cover fold so that the skin above the eye moves down slightly toward the eyeball, can lead to pleasant feelings.
此句话中的大多数字全是较为非常容易找到的介宾结构，在我们把他们去除掉以后，这一句子就变为：
Ekman hasfound that the so-called Duchenne smile, which is characterized by “crow’s feet”wrinkles and a subtle drop so that the skin moves down slightly, can lead topleasant feelings.
这一步做了以后能够发觉，句子早已降低了许多內容。接下去能够把起装饰功效的修饰词与介词划去。针对一个冗杂的句子，做加减法能够激起学员们把句子读下来的冲动，不妨一试呢？
做了加减法以后，头痛的那么问题来了，一个句子套一个句子，全是些哪些从句？怎么知道？提议把这个句子做为一个总体框起来，随后姑且不善它是句子，就当做一个英语单词，那麼这一英语单词在原文中当做的是啥成分它便是哪些从句了。大家然后用上边哪个事例。