及物动词
1. He chews gum.
他嚼口香糖。
2. I'll chew the problem over for a few days.
这个问题我会仔细思考几天。
3. He chewed over the problem for several days before making his decision.
他对这个问题详细考虑了好多天才作出决定。
不及物动词
1. He took my offer after chewing on it.
仔细考虑后他接受了我的提议。