Here's a breakdown:
1. Preposition: "Like" acts as a preposition when it introduces a phrase that compares something to something else.
* Example: "She sings like a bird." (Comparing her singing to a bird's singing)
2. Verb: "Like" can also be a verb, meaning to enjoy or find something pleasant.
* Example: "I like pizza." (Expressing enjoyment of pizza)
3. Conjunction: While "like" can sometimes be used as a conjunction in informal speech or writing, it's generally considered incorrect in formal writing. It's best to use other conjunctions like "as," "as if," or "such as" instead.
* Incorrect: "I feel like I'm going to be sick."
* Correct: "I feel as if I'm going to be sick."
Important Note: In some cases, "like" can be used as a conjunction when it introduces an example or illustration. However, this usage is often more common in informal contexts.
* Example: "He loves to play sports, like basketball and football." (Introducing examples of sports)
Overall, while "like" can be used as a preposition or verb, it's generally best to avoid using it as a conjunction in formal writing.