As/As if Versus Like
Like versus as/as if/as though/such as – In casual speech people often use like when they should use as or as if.
Like should only be used when followed by a noun.
The clouds look like cotton balls.
As, as if, and as though join clauses.
It is going to rain today
likeas it did yesterday.
likeas if it is going to rain.
We ran between the buildings
likeas though it were already raining.
Such as is used before a list.
You will need to bring rain gear
likesuch as an umbrella, a poncho, or boots.