三个英语句子的理解（请解释一下哈）

题目

三个英语句子的理解（请解释一下哈）
These results don't say much for the quality of the teaching.
John soon had his client eating out of his hand.
It's impossible that this news may cut the ice with David.

答案

1 These results don't say much for the quality of the teaching这些结果并不能说明教学的质量如何.
2.eat out of sb.'s hand,意思是对某人唯命是从
约翰很快征服了他的客户
3 cut no ice with sb 对什么毫无影响,没有意义
这条消息不可能对戴维有影响