assure
1.assure是“使…深信”，不是“深信”，如可以说：
- I am assured of his honesty.
- I am assured that he is honest.
但不可说：
- I assure his honesty.
- I assure that he is honest.
2.assure his life是“为他保人寿险”，但除了人寿保险以外，说保险通常不用assure而用insure，如insure his house。即使说保人寿险，现在用assure也不及用insure普通。在美国几乎完全不用。
3.下面两句意思相同：
- His work assured him a degree of happiness.
- His work assured a degree of happiness to him.
但不及下面三句普通：
- His work ensured him a degree of happiness.
- His work ensured a degree of happiness to him.
- His work ensured a degree of happiness for him.
