核心问题
Do not expect too much from him. 不要对他期望过高。
我查了《新英汉词典》、《现代英语用法词典》、ALD和LDCE，只查到expect of，而没有查到expect from。因此，我怀疑expect from的用法是否正确。
词典解答
expect of 与 expect from 都是正确的用法,英语学习者可以把它们看成同义表达手段。
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You're expecting too much of her. (ALD) 你对她的期望太高。
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They expected from their daily newspaper not information, but entertainment. 他们想从每日的报纸中看到的不是信息，而是娱乐内容。
练习题
请做下面的英语试题：
- “I’m confident that you and Sally will really impress the judges.”
A. us too much B. us of too much C. too much of us D. of us too much (TOEFL)
- The roles expected ____ old people in such a setting give too few psychological satisfactions for normal happiness. A. of B. on C. to D. with(全国研考,00-7)