1. When "is" is a verb:
* "Is" as a question:
* "Est-ce que" is the most common way to start a question in French. For example: "Is the door open?" would be "Est-ce que la porte est ouverte?"
* "Is" as a statement:
* "est" is the present tense form of "être" (to be). For example, "The door is open" would be "La porte est ouverte."
2. When "is" is a part of an adjective:
* "Is" before an adjective:
* Use the appropriate definite article (le, la, les) depending on the noun. For example, "the blue door" would be "la porte bleue."
Examples:
* "Is the dog brown?" -> "Est-ce que le chien est brun?"
* "The cat is black." -> "Le chat est noir."
* "The book is interesting." -> "Le livre est intéressant."
Let me know if you have a specific sentence in mind and I can help translate it!