Like has been used as a conjunction in ways similar to as since the 14th century. Although uses such as "Life isn't really like it is in the movies," "It looks like it's going to rain," and "shoes like a dancer wears" still draw criticism, there is no doubt that, after 600 years of use, conjunctive like is firmly established. In modern use it may be found in literature, journalism, and scholarly works as well as informal speech and writing. Nevertheless, when writing in a formal prose style, you may prefer to use constructions such as "Life isn't really as it is in the movies," "It looks as if it's going to rain," and "shoes such as a dancer wears" to avoid possible criticism.
Adverb
He was angry, but she was just as angry. Conjunction
The letter “k” is sometimes silent, as it is in “knee.”
She spilled the milk just as she was getting up.
I met him as I was leaving.
Word History
Etymology
Adverb, Conjunction, Pronoun, and Preposition
Middle English, from Old English eallswā likewise, just as — more at also
Noun
Latin
Noun suffix
French, from diastase
First Known Use
Adverb
before the 12th century, in the meaning defined at sense 1
Conjunction
before the 12th century, in the meaning defined at sense 2
Pronoun
before the 12th century, in the meaning defined at sense 1