1. As an Adjective:
* So much, so many, such: "Tengo tanto trabajo que hacer" (I have so much work to do).
* As much, as many: "Ella come tanto como yo" (She eats as much as I do).
* Such, so: "Era tanto ruido que no podía dormir" (It was such noise that I couldn't sleep).
2. As an Adverb:
* So, very, extremely: "Estoy tanto feliz" (I am so happy).
* That much, that many: "No te preocupes, no es tanto trabajo" (Don't worry, it's not that much work).
3. As a Pronoun:
* So much, so many: "No pude comer tanto" (I couldn't eat so much).
4. In the Phrase "Tanto… Como":
* As much as…: "Ella es tan alta como su hermana" (She is as tall as her sister).
* As many as…: "Hay tantos niños como niñas" (There are as many boys as girls).
5. In the Phrase "Tanto… Como…":
* Both…and…: "Me gustan tanto las manzanas como las naranjas" (I like both apples and oranges).
The meaning of "tanto" will depend on the context and the other words used in the sentence.