inquire
1.inquire后面不可接指人的词，如不可说I have inquired him about the matter，该在inquired后面加上of。这句里的inquired是不及物动词，下面两句里的inquired是及物动词，注意也有of：
- I have inquired of him the address of his brother.
- I have inquired of him whether he could help me.
2.inquire his name, inquire the time, inquire the way, inquire the address, inquire the price, inquire the reason等表达方式里的inquire是及物动词。下面两句意思不同：
- We must inquire the reason. （我们必须问这理由。）
- We must inquire into the reason. （我们必须审查这理由［看看它是否能成立］。）
3.He inquired after you是“他问（别人）你近况怎样。”不是直接问“你”。
