Present tense:
* Ydy: This is the most common way to say "are" in Welsh. It is used for singular subjects (e.g., "He is", "She is", "It is").
* Mae: This is another way to say "are" in Welsh. It is used for plural subjects (e.g., "They are", "We are") and sometimes singular subjects as well.
* Ydyn ni: This is the form of "are" used with the subject "we".
Past tense:
* Oedd: This is the past tense of "ydy" and "mae", meaning "was" or "were".
Here are some examples:
* Ydy chi'n iawn? (Are you okay?)
* Mae'r plant yn chwarae. (The children are playing.)
* Ydyn ni'n barod. (We are ready.)
* Oedd hi'n gysgu. (She was sleeping.)
It's important to note that the Welsh language is very flexible, and there are often multiple ways to express the same concept.