What is the difference between As and Like? How to distinguish between As and Like? Let's see the following examples.

 

✗ Jack talks like his brother does. 

 ✓ Jack talks as his brother does. 

 

 ✗ As other students, She is very busy.

 ✓ Like other students, She is very busy.

 

As: (preposition) As + adjectives, adverbs + as, (conjunction) introduce dependent clauses. Do not use as before a noun or pronoun in comparisons. 

Like: is a preposition is followed by a noun or pronoun.