2. We can use both “like” and “as” with the
meaning of similarity, but in a different way:
LIKE
preposition. We
use it before a
noun or a
pronoun
•He looks like your
brother.
•They are dancing like us.
3. AS conjunction.
Before sentences
or preposition
phrases
•Nobody knows him as I do
(sentence)
•On Monday, as on Friday,
the meeting will be at 6
o'clock (prepositional phrase)
4. We use “as” and not “like” to express the
functions that people and things have, the
job they do or the instrument we use to do
something:
◦ Carl worked as a policeman for five years.
◦ Please don't use my cup as an ashtray.