Es un corredor de cambios bien conocido: He is a well-known exchange broker.
Son buenos valores: They are good securities.
2. When "to be" is used to denote possession, as—
Los trapiches son de estos fabricantes: The sugar mills belong to these makers.
3. When "to be" us used impersonally, as—
Es necesario tomar medidas legales: It is necessary to take legal proceedings.
4. Before the words "Feliz," "Infeliz," "Pobre," and "Rico."[117]
[Footnote 117: These are not, strictly speaking, "inherent qualities," but they are spoken of as such.]
Estar must, of course, be always used before Present Participles,[118] as—
Está activando sus esfuerzos: He is making still further efforts.
Estamos extendiendo nuestras relaciones: We are extending our connection.