If you say that one person or thing is like another, you mean that they share some of the same qualities or features.

If you talk about what something or someone is like, you are talking about their qualities or features.

You can use like to introduce an example of the set of things or people that you have just mentioned.

You can use like to say that someone or something is in the same situation as another person or thing.

If you say that someone is behaving like something or someone else, you mean that they are behaving in a way that is typical of that kind of thing or person. Like is used in this way in many fixed expressions, for example to cry like a baby and to watch someone like a hawk.

You can use like in expressions such as that's just like her and it wasn't like him to indicate that the person's behaviour is or is not typical of their character.

Like is sometimes used as a conjunction in order to say that something appears to be the case when it is not. Some people consider this use to be incorrect.

Like is sometimes used as a conjunction in order to indicate that something happens or is done in the same way as something else. Some people consider this use to be incorrect.

You can use like in negative expressions such as nothing like it and no place like it to emphasize that there is nothing as good as the situation, thing, or person mentioned.

You can use like in expressions such as nothing like to make an emphatic negative statement.

Some people say like when they are thinking about what to say next or because it has become their habit to say it. Some people do not like this use.

Some people say like when they are reporting what they or another person said, or what they thought about something. Some people do not like this use.