常州环球港怎么去:cannot... without怎么用

来源:百度文库 编辑:查人人中国名人网 时间:2024/03/30 00:03:19
cannot do....without doing...的native的用法?
我的意思是在表示“因为..所以”的时候有什么注意事项没有。
相应例句:(from托福阅读)
Ecologists, though, cannot observe these energetic mammals scurrying up and down oak trees and eating and burying acorns without wondering about their complex relationship with trees.

yan can use it, when you like

44

这是因为所以吗?