When we want to express the idea of "first" or "to begin with" in English, there are several ways to do so depending on the context and tone you wish to convey. One of the most common and straightforward expressions is "first of all." This phrase is widely used in both formal and informal settings and serves as an excellent way to introduce the initial point or step in a sequence.

For example:

- First of all, let me thank you for coming today.

- First of all, we need to focus on improving our communication.

Another simple and direct way to say "first" is by using the word "firstly." Although some people prefer "first" over "firstly," both are correct. "Firstly" is often seen in more formal writing or speeches.

Examples:

- Firstly, we must consider the budget constraints.

- Firstly, it's important to acknowledge everyone's efforts.

If you're looking for something more casual, you can simply use the word "first" on its own:

- First, I want to talk about the new project.

- First, let’s gather all the necessary materials.

In spoken English, you might also hear native speakers use phrases like "to start with" or "to begin with" to convey the same meaning:

- To start with, we need to define our goals clearly.

- To begin with, we should discuss the timeline.

Each of these expressions has its place, but understanding when to use them can make your speech or writing more engaging and clear. Whether you're giving a presentation, writing an essay, or having a casual conversation, choosing the right phrase can help you communicate your ideas effectively.

So, next time you want to say "first" in English, remember that there are multiple options to suit different contexts. Choose wisely based on what feels natural to you and fits the situation!