1. I am already late.

2. I have already been late.

3. It was already late.
4. It had already been late.
5. It has already been late.
----------------------------
Can we use all the expressions?

I don't know what "It" is supposed to be referring to in 3 - 5, but otherwise, the sentences are fine.

No, we cannot use all the expressions interchangeably. Each expression has a specific meaning and usage. Let's break them down:

1. "I am already late." - This expression is used to indicate that you are currently late or behind schedule.

2. "I have already been late." - This expression is used to show that you have been late in the past. It emphasizes a completed action in the past.

3. "It was already late." - This expression refers to a specific point in the past. It indicates that the time or deadline has passed.

4. "It had already been late." - This expression is similar to #3 but emphasizes that the lateness occurred before another past event or action.

5. "It has already been late." - This expression is not commonly used because "late" is typically associated with a specific point in time. However, it can be used in a more figurative sense to mean that something has been delayed for an extended period.

So, while all the expressions have different meanings and usage, you can use them appropriately depending on the context.

In English, all of the expressions you listed can be used, but they have slightly different meanings and contexts. Let's go through each one to understand their nuances:

1. "I am already late." This expression is used to convey that you are currently delayed and running behind schedule. It implies that you should have arrived or completed something earlier, but you didn't.

2. "I have already been late." This expression indicates that you have experienced being late in the past. It suggests that being late is not a new occurrence for you, and you have had previous instances of not being punctual.

3. "It was already late." This phrase is used to describe a past situation where the time for a particular event or action had already passed. It suggests that by the time the situation was considered or realized, it was already too late to act or make any changes.

4. "It had already been late." This expression refers to a past event that was delayed or late by the time something else happened. It implies that the lateness of the first event was established before the occurrence of the second event.

5. "It has already been late." This phrasing indicates that a certain event or action has been consistently late or delayed in the past up until the present time. It suggests an ongoing pattern of lateness.

So, while you can use all the expressions, it's important to understand their specific meanings and contexts in order to convey your intended message accurately.