1．face 用作“面子”解是抽象名词，如 loss of face（失面子、丢脸）和 He lost (his) face as a result of a piece of double-dealing。

2．注意下面各句里的 face 前面都没有 a, the, his 等词：
He came back with face clouded.
He came back with smiling face.
He came back with dejected face.
He has aged in face.
Every one of them is known by face.
He was lying face downwards.
第一句里 face 前面可以加上 his。第二句和第三句里 smiling 和 dejected 前面可以加上 a。

3．“面向南”有几种不同的说法。例如：
The house faces south.
The house faces the south.
The house faces to the south.
The house faces on the south.
The house faces southwards.

4．face the difficulty 是“面对困难”，be faced with the difficulty 是“遇到困难”。

5．face up to the difficulty=face the difficulty，但比较不普通。

6．in face of 和 in the face of 相同，在英国通常不用 the。in (the) face of the known facts 是“面临着这些已知的事实”，“面临”是譬喻。in (the) face of the lake 是“面临着湖”，“面临”是直解。第二种用法只用在英国。