47.    both

both means 'one and the other'. It takes a plural verb. both can be used alone or followed by a noun:

Both (doors) were open

or by (of) + the/these/those or possessives:

both (of) the wheels       both (of) your wheels or by of + us/you/them:

Both of us knew him.

A personal pronoun + both is also possible:

We both knew him.

both . . . and ., . . can be used to emphasize a combination of two adjectives, nouns, verbs etc.:

It was both cold and wet.

He is both an actor and a director.

He both acts and directs.