How is “also” spelled: together or separately? And "too"? We figure it out once and for all

When to write "also" and "also" together

The space is not needed if in front of you:

1. Union. It can occur in simple sentences or combine parts of compound sentences. There are three ways to make sure that “also” and “also” are conjunctions.

Replace with "and". If the meaning of the sentence does not change, write together. For example: Vanya will spend his vacation at home, Masha will not go anywhere either. → Vanya will spend his vacation at home, and Masha will not go anywhere.
Remove "same" from the sentence. If the essence is lost or distorted without it, you need to write together. For example: Katya ate cake, Christina wanted it too. It is impossible to throw out the “same” without losing the meaning.
Replace "also" with "too" or vice versa. The meaning remains - it means that this is a union. For example: Oleg could not think of how to entertain himself. Katya didn't know what to do either. → Katya also did not know what to do.

2. An adverb with the meaning "in equal measure." For example: Sergey is very tired, and so is Anya.

3. Particle. “Also” is written together if it is a particle and helps to convey a dismissive, derisive attitude. Often "too" is paired with the pronoun "me". For example: I also found experts!

When to write "the same" and "the same" separately

“The same” is written separately if “then” is a demonstrative pronoun, and “same” is a particle. You can check it by asking the question "which one?" For example: It was the (what?) Same tree as in my dream.

“So” is written separately, if “so” is an adverb, and “same” is a particle. The questions will help to recognize them: "how?", "How?", "To what extent?". For example: I wanted to read Oscar Wilde's book as (how?) The same as you.

There are other ways to make sure that the spelling is separate:

Remove the "same" particle. If the meaning remains the same, write separately. For example: I will do the same as last time. → I will do the same as last time.
Replace “same” with “same”. The meaning should remain the same. For example: Olya wanted to buy the same dress for the prom as Marina. → Olya wanted to buy the same dress for the prom as Marina.
After "the same" is "what" or after "the same" is "how". If you see such combinations, always write separately. For example: This tea was as wonderful as the one I drank in the mountains. Now can I order the same as you?

And you also have to remember: the phrases "at the same time", "the same", "all the same", "all the same", "the same", "exactly the same as" are written separately.