acquaintance
1. 下面三句意思相同：
- I have made acquaintance with the artist.
- I have made the acquaintance of the artist.
- I have made the artist's acquaintance.
注意：（1）第一句没有the，用with，第二句有the，用of。（2）第一句最不普通。
下面四句意思相同（第一句最普通）：
- We made acquaintance last year.
- We made acquaintance with each other (或one another) last year.
- We made each other's (或one another's) acquaintance last year.
- We made the acquaintance of each other (或one another) last year.
2. acquaintance从前也用作集合名词，指若干相识者，如his friends and acquaintance，这用法现在很不普通，现在最好说his friends and acquaintances，但he has a large acquaintance（他有许多相识者）现在还是正常的英语。
3. a slight acquaintance (仅仅相识), an intimate acquaintance和a nodding acquaintance（点头之交）三种表达方式里的acquaintance都指对于人或事物的认识，并不指“相识的人”，如I have a slight (或an intimate，或a nodding) acquaintance with him (或the subject)和He has a slight acquaintance with astronomy。
